- Texas Instruments
- 2.7-V to 5.5-V 10-Bit 3-uS Quadruple Digital-to-Analog Converters w/Power Down (Rev. B)
- Data Sheet
Texas Instruments 2.7-V to 5.5-V 10-Bit 3-uS Quadruple Digital-to-Analog Converters w/Power Down (Rev. B) Datasheet
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TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
D
Four 10-Bit D/A Converters
D
Programmable Settling Time of 3
µ s or 9
µ s Typ
D
TMS320, (Q)SPI
, and Microwire
Compatible Serial Interface
D
Internal Power-On Reset
D
Low Power Consumption:
5.5 mW, Slow Mode – 5-V Supply
3.3 mW, Slow Mode – 3-V Supply
D
Reference Input Buffers
D
Voltage Output Range . . . 2
×
the Reference
Input Voltage
D
Monotonic Over Temperature
D
Dual 2.7-V to 5.5-V Supply (Separate Digital and Analog Supplies)
description
D
Hardware Power Down (10 nA)
D
Software Power Down (10 nA)
D
Simultaneous Update
applications
D
Battery Powered Test Instruments
D
Digital Offset and Gain Adjustment
D
Industrial Process Controls
D
Machine and Motion Control Devices
D
Communications
D
Arbitrary Waveform Generation
D OR PW PACKAGE
(TOP VIEW)
The TLV5604 is a quadruple 10-bit voltage output digital-to-analog converter (DAC) with a flexible
4-wire serial interface. The 4-wire serial interface allows glueless interface to TMS320, SPI, QSPI, and Microwire serial ports. The TLV5604 is programmed with a 16-bit serial word comprised of a DAC address, individual DAC control bits, and a 10-bit DAC value.
DV
DD
PD
LDAC
DIN
SCLK
CS
FS
DGND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
AV
DD
REFINAB
OUTA
OUTB
OUTC
OUTD
REFINCD
AGND
The device has provision for two supplies: one digital supply for the serial interface (via pins DV
DD
and DGND), and one for the DACs, reference buffers and output buffers (via pins AV
DD
and AGND). Each supply is independent of the other, and can be any value between 2.7 V and 5.5 V. The dual supplies allow a typical application where the DAC will be controlled via a microprocessor operating on a 3-V supply (also used on pins
DV
DD
and DGND), with the DACs operating on a 5-V supply. Of course, the digital and analog supplies can be tied together.
The resistor string output voltage is buffered by a x2 gain rail-to-rail output buffer. The buffer features a Class AB output stage to improve stability and reduce settling time. A rail-to-rail output stage and a power-down mode makes it ideal for single voltage, battery based applications. The settling time of the DAC is programmable to allow the designer to optimize speed versus power dissipation. The settling time is chosen by the control bits within the 16-bit serial input string. A high-impedance buffer is integrated on the REFINAB and REFINCD terminals to reduce the need for a low source impedance drive to the terminal. REFINAB and REFINCD allow
DACs A and B to have a different reference voltage then DACs C and D.
The device, implemented with a CMOS process, is available in 16-terminal SOIC and TSSOP packages. The
TLV5604C is characterized for operation from 0
°
C to 70
°
C. The TLV5604I is characterized for operation from
– 40
°
C to 85
°
C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corporation.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
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Copyright
2002, Texas Instruments Incorporated
1
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
TA
0
°
C to 70
°
C
– 40
°
C to 85
°
C
AVAILABLE OPTIONS
PACKAGE
SOIC
(D)
TLV5604CD
TLV5604ID
TSSOP
(PW)
TLV5604CPW
TLV5604IPW
functional block diagram
REFINAB
15
AVDD
16
DVDD
1
DAC A
+
_
Power-On
Reset x2
10 10
10-Bit
DAC
Latch
DIN
4
Serial
Input
Register
2
14
FS
SCLK
CS
7
5
6
DAC
Select/
Control
Logic
14-Bit
Data and
Control
Register
2 2-Bit
Control
Data
Latch
2
Power Down/
Speed Control
DAC B
14
OUTA
13
OUTB
REFINCD
DAC C
12
OUTC
11
OUTD
9
AGND
8
DGND
3
DAC D
LDAC
2
PD
2
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CS
TERMINAL
NAME NO.
AGND
AVDD
DGND
DIN
9
16
6
8
4
DVDD
FS
1
7
PD
LDAC
REFINAB
REFINCD
SCLK
OUTA
OUTB
OUTC
OUTD
2
3
14
13
12
15
10
5
11
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
Terminal Functions
I
I
I
I
Analog ground
Analog supply
Chip select. This terminal is active low.
Digital ground
Serial data input
Digital supply
Frame sync input. The falling edge of the frame sync pulse indicates the start of a serial data frame shifted out to the TLV5604.
Power-down pin. Powers down all DACs (overriding their individual power down settings), and all output stages.
This terminal is active low.
I
I
I
I
Load DAC. When the LDAC signal is high, no DAC output updates occur when the input digital data is read into the serial interface. The DAC outputs are only updated when LDAC is low.
Voltage reference input for DACs A and B.
Voltage reference input for DACs C and D.
Serial Clock input
O DAC A output
O DAC B output
O DAC C output
O DAC D output
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, (DV
DD
, AV
DD
to GND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Supply voltage difference, (AV
DD
to DV
DD
)
Digital input voltage range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–2.8 V to 2.8 V
–0.3 V to DV
DD
+ 0.3 V
Reference input voltage range
Storage temperature range, T stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
TLV5604I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
–0.3 V to AV
–40
DD
°
°
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+ 0.3 V
C to 70
C to 85
°
°
C
C
– 65
°
C to 150
°
C
260
°
C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
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3
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
recommended operating conditions
5-V supply
3-V supply
DVDD = 2.7 V
DVDD = 5.5 V
DVDD = 2.7 V
DVDD = 5.5 V
5-V supply (see Note 1)
3-V supply (see Note 1)
Load resistance, RL
Load capacitance, CL
Serial clock rate, SCLK
TLV5604C
TLV5604I
NOTE 1: Voltages greater than AVDD/2 will cause output saturation for large DAC codes.
0
0
2
MIN
4.5
2.7
2
2.4
0
–40
NOM
5
3
MAX
5.5
3.3
0.6
1
2.048
AVDD–1.5
1.024
AVDD–1.5
10
100
20
70
85
UNIT k
Ω pF
MHz
°
C
electrical characteristics over recommended operating free-air temperature range
(unless otherwise noted)
static DAC specifications
EZS
EG
Resolution
PARAMETER
Integral nonlinearity (INL), end point adjusted
Differential nonlinearity (DNL)
Zero scale error (offset error at zero scale)
Zero scale error temperature coefficient
Gain error
Gain error temperature coefficient
TEST CONDITIONS
See Note 2
See Note 3
See Note 4
See Note 5
See Note 6
See Note 7
MIN TYP MAX UNIT
10 bits
±
0.1
±
1
±
1
±
12
LSB
LSB
10
10
±
0.6
mV ppm/
°
C
%of FS voltage ppm/
°
C
– 80 Zero scale gain
Gain – 80
NOTES: 2. The relative accuracy or integral nonlinearity (INL) sometimes referred to as linearity error, is the maximum deviation of the output from the line between zero and full scale excluding the effects of zero code and full-scale errors.
3. The differential nonlinearity (DNL) sometimes referred to as differential error, is the difference between the measured and ideal
1 LSB amplitude change of any two adjacent codes. Monotonic means the output voltage changes in the same direction (or remains constant) as a change in the digital input code.
4. Zero-scale error is the deviation from zero voltage output when the digital input code is zero.
5. Zero-scale-error temperature coefficient is given by: EZS TC = [EZS (Tmax) – EZS (Tmin)]/Vref × 106/(Tmax – Tmin).
6. Gain error is the deviation from the ideal output (2Vref – 1 LSB) with an output load of 10 k Ω
excluding the effects of the zero-error.
7. Gain temperature coefficient is given by: EG TC = [EG(Tmax) – EG (Tmin)]/Vref × 106/(Tmax – Tmin).
8. Zero-scale-error rejection ratio (EZS–RR) is measured by varying the AVDD from 5
±
0.5 V and 3
±
0.3 V dc, and measuring the proportion of this signal imposed on the zero-code output voltage.
9. Gain-error rejection ratio (EG-RR) is measured by varying the AVDD from 5
±
0.5 V and 3
±
0.3 V dc and measuring the proportion of this signal imposed on the full-scale output voltage after subtracting the zero scale change.
4
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TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
electrical characteristics over recommended operating free-air temperature range
(unless otherwise noted) (continued)
individual DAC output specifications
VO
PARAMETER
Voltage output RL = 10 k Ω
TEST CONDITIONS
Output load regulation accuracy RL = 2 k
Ω
vs 10 k
Ω
MIN
0
TYP
0.1
MAX UNIT
AVDD–0.4
V
0.25
% of FS voltage reference input (REFINAB, REFINCD)
VI
RI
CI
PARAMETER
Input voltage range
Input resistance
Input capacitance
See Note 10
TEST CONDITIONS MIN
0
TYP
10
5
MAX UNIT
AVDD–1.5
V
M
Ω pF
Reference feed through
REFIN = 1 Vpp at 1 kHz + 1.024 V dc
(see Note 11)
–75 dB
Slow 0.5
REFIN = 0 2 V + 1 024 V dc
Fast 1
NOTES: 10. Reference input voltages greater than VDD/2 will cause output saturation for large DAC codes.
11. Reference feedthrough is measured at the DAC output with an input code = 000 hex and a Vref(REFINAB or REFINCD) input = 1.024 Vdc + 1 Vpp at 1 kHz.
digital inputs (D0–D11, CS, WEB, LDAC, PD)
PARAMETER
IIH
IIL
CI
High-level digital input current
Low-level digital input current
Input capacitance
TEST CONDITIONS
VI = DVDD
VI = 0 V
MIN TYP MAX UNIT
±
1
±
1
µ
µ
A
A
3 pF power supply
PARAMETER TEST CONDITIONS
Slow
Fast
Slow
Fast
MIN TYP MAX UNIT
1.4
2.2
3.5
5.5
1
3
1.5
4.5
Power down supply current,
See Figure 12
10 nA
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5
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
electrical characteristics over recommended operating free-air temperature range
(unless otherwise noted) (continued)
analog output dynamic performance t ts
PARAMETER TEST CONDITIONS
CL = 100 pF, RL = 10 k
Ω
,
Vref = 2.048 V, 1024 V
To
±
L
,
RL = 10 k Ω
, See Notes 12 and 14
To
±
L
RL = 10 k Ω
, See Note 13
,
Code transition from 7FF to 800
Fast
Slow
Fast
Slow
Fast
Slow
MIN TYP MAX UNIT
5 V/
µ s
1 V/
µ s
2.5
8.5
1
2
10
4
18
µ
µ s s nV-sec Glitch energy
SNR
S/(N+D)
THD
SFDR
Signal-to-noise ratio
Signal to noise + distortion
Total harmonic Distortion
Spurious free dynamic range
Sinewave generated by DAC, l 1 024 3 V d 2 048 5 V fs = 400 KSPS, fOUT = 1.1 kHz sinewave,
CL = 100 pF RL = 10 k Ω
,
BW = 20 kHz
68
65
–68
70
NOTES: 12. Settling time is the time for the output signal to remain within
±
0.5LSB of the final measured value for a digital input code change of 020 hex to 3FF hex or 3FF hex to 020 hex.
13. Settling time is the time for the output signal to remain within
±
0.5LSB of the final measured value for a digital input code change of one count, 1FF hex to 200 hex.
14. Limits are ensured by design and characterization, but are not production tested.
6
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TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
electrical characteristics over recommended operating free-air temperature range
(unless otherwise noted) (continued) digital input timing requirements
tsu(CS–FS) Setup time, CS low before FS
↓ tsu(FS–CK) Setup time, FS low before first negative SCLK edge tsu(C16–FS)
Setup time, sixteenth negative SCLK edge after FS low on which bit D0 is sampled before rising edge of FS tsu(C16–CS) twH twL tsu(D) th(D) twH(FS)
Setup time. The first positive SCLK edge after D0 is sampled before CS rising edge. If FS is used instead of the SCLK positive edge to update the DAC, then the setup time is between the FS rising edge and CS rising edge.
Pulse duration, SCLK high
Pulse duration, SCLK low
Setup time, data ready before SCLK falling edge
Hold time, data held valid after SCLK falling edge
Pulse duration, FS high
MIN NOM MAX UNIT
10 ns
8 ns
10 ns
10
25
25
8
5
20 ns ns ns ns ns ns
PARAMETER MEASUREMENT INFORMATION
twH twL
ÎÎÎÎ
SCLK
1
ÎÎÎÎ
ÎÎÎÎ tsu(D)
DIN
ÎÎÎÎ
D15
2 th(D)
CS
ÎÎÎÎ tsu(FS-CK) tsu(CS-FS) twH(FS)
D14
3
D13
4
D12
5 15
D1
16
D0 tsu(C16-CS) tsu(C16-FS)
ÎÎ
ÎÎ
ÎÎ
ÎÎÎ
ÎÎÎ
FS
Figure 1. Timing Diagram
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TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
TYPICAL CHARACTERISTICS
LOAD REGULATION
0.35
0.30
VDD = 5 V,
VREF = 2 V,
VO = Full Scale
0.25
5 V Slow Mode, Sink
0.20
5 V Fast Mode, Sink
0.15
0.10
0.05
0
0 0.02 0.04
0.1
0.2
0.4
0.8
Load Current – mA
Figure 2
1 2 4
LOAD REGULATION
4.002
4.00
3.998
3.996
3.994
3.992
3.99
5 V Slow Mode, Source
5 V Fast Mode, Source
3.988
3.986
VDD = 5 V,
VREF = 2 V,
VO = Full Scale
3.984
0 0.02 0.04
0.1
0.2
0.4
0.8
Load Current – mA
1 2
Figure 4
4
LOAD REGULATION
0.20
0.18
0.16
0.14
0.12
VDD = 3 V,
VREF = 1 V,
VO = Full Scale
3 V Slow Mode, Sink
0.10
0.08
0.06
3 V Fast Mode, Sink
0.04
0.02
0
0 0.01 0.02 0.05 0.1
0.2
0.5
Load Current – mA
Figure 3
0.8
1 2
LOAD REGULATION
2.003
2.0025
2.002
2.0015
2.001
2.0005
3 V Fast Mode, Source
3 V Slow Mode, Source
2
1.9995
VDD = 3 V,
VREF = 1 V,
VO = Full Scale
1.999
0 0.01 0.02 0.05 0.1
0.2
0.5
Load Current – mA
0.8
1
Figure 5
2
8
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TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
TYPICAL CHARACTERISTICS
SUPPLY CURRENT vs
TEMPERATURE
4
3.5
VDD = 3 V,
VREF = 1.024 V,
VO = Full Scale
Fast Mode
3
2.5
2
SUPPLY CURRENT vs
TEMPERATURE
4
3.5
Fast Mode
3
2.5
I DD
2
Slow Mode
1.5
1
VDD = 5 V,
VREF = 1.024 V,
VO = Full Scale
0.5
–40 –20 0 20 40
T – Temperature –
°
C
60
Figure 7
80 100
I DD
1.5
1
Slow Mode
0.5
–40 –20 0 20 40
T – Temperature –
°
C
60
Figure 6
80 100
–50
–60
–70
–80
0
–20
–30
––40
TOTAL HARMONIC DISTORTION vs
FREQUENCY
0
–10
Vref = 1 V dc + 1 V p/p Sinewave,
Output Full Scale
5
Fast Mode
50 10 20 30 f – Frequency – kHz
Figure 8
100
–50
–60
–70
–80
0
TOTAL HARMONIC DISTORTION vs
FREQUENCY
0
–10
Vref = 1 V dc + 1 V p/p Sinewave,
Output Full Scale
–20
–30
––40
5
Slow Mode
50 10 20 30 f – Frequency – kHz
Figure 9
100
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TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
TYPICAL CHARACTERISTICS
–20
–30
––40
0
TOTAL HARMONIC DISTORTION AND NOISE vs
FREQUENCY
–10
Vref = 1 V dc + 1 V p/p Sinewave,
Output Full Scale
–50
–60
–70
–80
0 5
0
TOTAL HARMONIC DISTORTION AND NOISE vs
FREQUENCY
–10
Vref = 1 V dc + 1 V p/p Sinewave,
Output Full Scale
–20
–30
––40
–50
Fast Mode Slow Mode
–60
–70
10 20 30 f – Frequency – kHz
Figure 10
50 100
–80
0 5
4000
SUPPLY CURRENT vs
TIME
(WHEN ENTERING POWER-DOWN MODE)
10 20 30 f – Frequency – kHz
Figure 11
3500
50 100
3000
2500
2000
1500
I DD 1000
500
0
0 200 800 1000 400 600 t – Time – ns
Figure 12
10
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TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
TYPICAL CHARACTERISTICS
0.2
INTEGRAL NONLINEARITY
VDD = 5 V, Vref = 2 V,
CLK = 1 MHz
0
–0.2
–0.4
–0.6
0 64 128 192 256 320 384 448 512 576
Digital Code
640 704 768 832 896 960 1024
Figure 13
DIFFERENTIAL NONLINEARITY
0.15
0.1
VDD = 5 V, Vref = 2 V,
CLK = 1 MHz
0.05
0
–0.05
–0.1
0 64 128 192 256 320 384 448 512 576 640
Digital Code
704 768 832 896 960 1024
Figure 14
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TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION general function
The TLV5604 is a 10-bit single supply DAC based on a resistor string architecture. The device consists of a serial interface, speed and power-down control logic, a reference input buffer, a resistor string, and a rail-to-rail output buffer.
The output voltage (full scale determined by external reference) is given by:
2 REF
CODE
2n
[V]
Where REF is the reference voltage and CODE is the digital input value within the range of 0
10
to 2 n
–1, where n=10 (bits). The 16-bit data word, consisting of control bits and the new DAC value, is illustrated in the data
format section. A power-on reset initially resets the internal latches to a defined state (all bits zero).
serial interface
Explanation of data transfer: First, the device has to be enabled with CS set to low. Then, a falling edge of FS starts shifting the data bit-per-bit (starting with the MSB) to the internal register on the falling edges of SCLK.
After 16 bits have been transferred or FS rises, the content of the shift register is moved to the DAC latch, which updates the voltage output to the new level.
The serial interface of the TLV5604 can be used in two basic modes:
D
Four wire (with chip select)
D
Three wire (without chip select)
Using chip select (four wire mode), it is possible to have more than one device connected to the serial port of the data source (DSP or microcontroller). The interface is compatible with the TMS320 family. Figure 15 shows an example with two TLV5604s connected directly to a TMS320 DSP.
TLV5604
CS FS DIN SCLK
TLV5604
CS FS DIN SCLK
TMS320
DSP
XF0
XF1
FSX
DX
CLKX
Figure 15. TMS320 Interface
12
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2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION serial interface (continued)
If there is no need to have more than one device on the serial bus, then CS can be tied low. Figure 16 shows an example of how to connect the TLV5604 to a TMS320, SPI, or Microwire port using only three pins.
TMS320
DSP
FSX
DX
CLKX
TLV5604
FS
DIN
SCLK
CS
SPI
SS
MOSI
SCLK
TLV5604
FS
DIN
SCLK
CS
Microwire
I/O
SO
SK
TLV5604
FS
DIN
SCLK
CS
Figure 16. Three-Wire Interface
Notes on SPI and Microwire: Before the controller starts the data transfer, the software has to generate a falling edge on the I/O pin connected to FS. If the word width is 8 bits (SPI and Microwire), two write operations must be performed to program the TLV5604. After the write operation(s), the DAC output is updated automatically on the next positive clock edge following the sixteenth falling clock edge.
serial clock frequency and update rate
The maximum serial clock frequency is given by: f
SCLKmax
+ t wH(min)
1
) t wL(min)
+
20 MHz
The maximum update rate is: f
UPDATEmax
+
16 ǒ t
wH(min)
1
) t
wL(min)
Ǔ + 1.25 MHz
Note that the maximum update rate is a theoretical value for the serial interface since the settling time of the
TLV5604 has to be considered also.
data format
The 16-bit data word for the TLV5604 consists of two parts:
D
Control bits
D
New DAC value
(D15 . . . D12)
(D11 . . . D0)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6
A1 A0 PWR SPD New DAC value (10 bits)
X: don’t care
SPD: Speed control bit.
1
→
fast mode 0
→
slow mode
PWR: Power control bit.
1
→
power down 0
→
normal operation
D5 D4 D3 D2 D1
X
D0
X
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13
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
In power down mode, all amplifiers within the TLV5604 are disabled. A particular DAC (A, B, C, D) of the
TLV5604 is selected by A1 and A0 within the input word.
A1
0
0
1
1
A0
0
1
0
1
DAC
A
B
C
D
TLV5604 interfaced to TMS320C203 DSP
Hardware interfacing
Figure 17 shows an example of how to connect the TLV5604 to a TMS320C203 DSP. The serial port is configured in burst mode, with FSX generated by the TMS320C203 to provide the Frame Sync (FS) input to the TLV5604. Data is transmitted on the DX line, with the serial clock input on the CLKX line. The general-purpose input/output port bits IO0 and IO1 are used to generate the Chip Select ( CS) and DAC Latch
Update ( LDAC ) inputs to the TLV5604. The active low Power Down ( PD ) is pulled high all the time to ensure the DACs are enabled.
TMS320C203 TLV5604
DX
CLKX
FSX
I/O 0
I/O 1
SDIN
SCLK
FS
CS
LDAC
VDD
PD
REF
REFINAB
REFINCD
VOUTA
VOUTB
VOUTC
VOUTD
VSS
Figure 17. TLV5604 Interfaced with TMS320C203
Software
The application example generates a differential in-phase (sine) signal between the VOUTA and VOUTB pins, and it is quadrature (cosine) signal as the differential signal between VOUTC and VOUTD.
The on-chip timer is used to generate interrupts at a fixed frequency. The related interrupt service routine pulses
LDAC low to update all 4 DACs simultaneously, then fetches and writes the next sample to all 4 DACs. The samples are stored in a look-up table, which describes two full periods of a sine wave.
The synchronous serial port of the DSP is used in burst mode. In this mode, the processor generates an FS pulse preceding the MSB of every data word. If multiple, contiguous words are transmitted, a violation of the tsu(C16-FS) timing requirement will occur. To avoid this, the program waits until the transmission of the previous word has been completed.
14
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DALLAS, TEXAS 75265
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ;
; Processor: TMS320C203 runnning at 40 MHz;
; Description:
;
; This program generates a differential in-phase (sine) on (OUTA–OUTB) and it’s
; quadrature (cosine) as a differential signal on (OUTC–OUTD).
;
; The DAC codes for the signal samples are stored as a table of 64 12–bit values,
; describing 2 periods of a sine function. A rolling pointer is used to address the
; table location in the first period of this waveform, from which the DAC A samples are
; read. The samples for the other 3 DACs are read at an offset to this rolling pointer:
; DAC Function Offset from rolling pointer;
; A
; B
; C sine inverse sine cosine
0
16
8
; D
; inverse cosine 24
; The on-chip timer is used to generate interrupts at a fixed rate. The interrupt
; service routine first pulses LDAC low to update all DACs simultaneously with the
; values which were written to them in the previous interrupt. Then all 4 DAC values are
; fetched and written out through the synchronous serial interface. Finally, the
; rolling pointer is incremented to address the next sample, ready for the next
; interrupt.
;
;
1998, Texas Instruments Incorporated
; ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ;
; ––––––––––I/O and memory mapped regs –––––––––––– –––––––––––––––––––––––––––––––
.include ”regs.asm”
; ––––––––––––––jump vectors––––––––––––––––––––––––––––––––––––––––––––––––––––––
.ps
0h b b b b start int1 int23 timer_isr
;–––––––––––––––––––––– variables ––––––––––––––––––––––––––––– ––––––––––––––––––– temp .equ
0060h r_ptr iosr_stat
DACa_ptr
.equ
.equ
.equ
0061
0062h
0063h
DACb_ptr
DACc_ptr
DACd_ptr
.equ
.equ
.equ
0064h
0065h
0066h
;––––––––– constants ––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––––
; DAC control bits to be OR’ed onto data
; all fast mode
DACa_control
DACb_control
.equ
.equ
DACc_control
DACd_control
.equ
.equ
09000h
0d000h
;––––––––––– tables –––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––
02000h
01000h
05000h
.ds
sinevals
.word
.word
.word
.word
.word
.word
00800h
0097Ch
00AE9h
00C3Ah
00D61h
00E53h
.word
.word
.word
.word
.word
.word
.word
.word
00F07h
00F76h
00F9Ch
00F76h
00F07h
00E53h
00D61h
00C3Ah
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15
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
00AE9h
0097Ch
00800h
00684h
00517h
003C6h
0029Fh
001ADh
000F9h
0008Ah
00064h
0008Ah
000F9h
001ADh
0029Fh
003C6h
00517h
00684h
00800h
0097Ch
00AE9h
00C3Ah
00D61h
00E53h
00F07h
00F76h
00F9Ch
00F76h
00F07h
00E53h
00D61h
00C3Ah
00AE9h
0097Ch
00800h
00684h
00517h
003C6h
0029Fh
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
.word
001ADh
000F9h
0008Ah
00064h
0008Ah
000F9h
001ADh
0029Fh
003C6h
00517h
00684h
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; Main Program
;–––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––––––––––
.ps
1000h
.entry
start
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; disable interrupts
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– setc INTM ; disable maskable interrupts splk #0ffffh, IFR ; clear all interrupts splk #0004h, IMR ; timer interrupts unmasked
16
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DALLAS, TEXAS 75265
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; set up the timer
; timer period set by values in PRD and TDDR
; period = (CLKOUT1 period)
×
(1+PRD)
×
(1+TDDR)
; examples for TMS320C203 with 40 MHz main clock
; Timer rate TDDR PRD
; 80 kHz
; 50 kHz
9
9
24 (18h)
39 (27h)
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– prd_val.equ
tcr_val.equ
0029h
0018h splk #0000h, temp out temp, TIM
; clear timer splk #prd_val, temp ; set PRD out temp, PRD splk #tcr_val, temp ; set TDDR, and TRB=1 for auto-reload out temp, TCR
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; Configure IO0/1 as outputs to be :
; IO0 CS – and set high
; IO1 LDAC – and set high
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– in temp, ASPCR ; configure as output lacl temp or #0003h sacl temp out temp, ASPCR in temp, IOSR lacl temp or #0003h sacl temp out temp, IOSR
; set them high
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; set up serial port for
; SSPCR.TXM=1
; SSPCR.MCM=1
; SSPCR.FSM=1
Transmit mode – generate FSX
Clock mode – internal clock source
Burst mode
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– splk #0000Eh, temp out temp, SSPCR splk #0002Eh, temp
; reset transmitter out temp, SSPCR
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; reset the rolling pointer
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– lacl #000h sacl r_ptr
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; enable interrupts
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– clrc INTM
; enable maskable interrupts
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; loop forever!
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– next idle b next
;wait for interrupt
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; all else fails stop here
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– done b done ;hang there
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17
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; Interrupt Service Routines
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– int1 ret ; do nothing and return int23 timer_isr: ret ; do nothing and return in iosr_stat, IOSR ; store IOSR value into variable space lacl iosr_stat ; load acc with iosr status
; reset IO1 – LDAC low and sacl out
#0FFFDh temp ; temp, IOSR ; or and out add
#0002h sacl temp out temp, IOSR
#0FFFEh sacl temp temp, IOSR lacl r_ptr
#sinevals sacl DACa_ptr add #08h sacl DACc_ptr add #08h sacl DACb_ptr add sacl mar
#08h
DACd_ptr
*,ar0
; set IO1 – LDAC high
;
;
; reset IO0 – CS low
;
;
; load rolling pointer to accumulator
; add pointer to table start
; to get a pointer for next DAC a sample
; add 8 to get to DAC C pointer
; add 8 to get to DAC B pointer
; add 8 to get to DAC D pointer
; set ar0 as current AR
; DAC A lar lacl or sacl out ar0, DACa_ptr ; ar0 points to DAC a sample
* ; get DAC a sample into accumulator
#DACa_control ; OR in DAC A control bits temp ; temp, SDTR ; send data
;––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––
; We must wait for transmission to complete before writing next word to the SDTR.
; TLV5604 interface does not allow the use of burst mode with the full packet rate, as
; we need a CLKX –ve edge to clock in last bit before FS goes high again, to allow SPI
; compatibility.
;––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––––––––––––––––––––––––––––––– rpt nop
#016h ; wait long enough for this configuration
; of MCLK/CLKOUT1 rate
; DAC B lar lacl or sacl out rpt nop ar0, DACb_ptr ; ar0 points to DAC a sample
* ; get DAC a sample into accumulator
#DACb_control ; OR in DAC B control bits temp temp, SDTR
#016h
;
; send data
; wait long enough for this configuration
; of MCLK/CLKOUT1 rate
18
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DALLAS, TEXAS 75265
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
; DAC C lar lacl or sacl out rpt nop ar0, DACc_ptr ; ar0 points to DAC a sample
* ; get DAC a sample into accumulator
#DACc_control ; OR in DAC C control bits temp temp, SDTR
#016h
;
; send data
; wait long enough for this configuration
; of MCLK/CLKOUT1 rate
; DAC D lar lacl or sacl out lacl add and sacl rpt or sacl out clrc ret
.end
ar0, DACd_ptr ; ar0 points to DAC a sample
* ; get DAC a sample into accumulator
#DACd_control ; OR in DAC D control bits temp ; temp, SDTR r_ptr
#1h
#001Fh r_ptr
#016h nop
; now take CS high again lacl iosr_stat
#0001h temp temp, IOSR intm
; send data
; load rolling pointer to accumulator
; increment rolling pointer
; count 0–31 then wrap back round
; store rolling pointer
; wait long enough for this configuration
; of MCLK/CLKOUT1 rate
; load acc with iosr status
; set IO0 – CS high
;
;
; re-enable interrupts
; return from interrupt
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19
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
TLV5604 interfaced to MCS
51 microcontroller
hardware interfacing
Figure 18 shows an example of how to connect the TLV5604 to an MCS
51 Microcontroller. The serial DAC input data and external control signals are sent via I/O Port 3 of the controller. The serial data is sent on the RxD line, with the serial clock output on the TxD line. Port 3 bits 3, 4, and 5 are configured as outputs to provide the
DAC latch update (LDAC), chip select (CS) and frame sync (FS) signals for the TLV5604. The active low power down pin (PD) of the TLV5604 is pulled high to ensure that the DACs are enabled.
MCS
®
51 TLV5604
RxD
TxD
P3.3
P3.4
P3.4
REF
SDIN
SCLK
LDAC
CS
FS
REFINAB
REFINCD
VDD
PD
VOUTA
VOUTB
VOUTC
VOUTD
VSS
Figure 18. TLV5604 Interfaced with MCS
51 software
The example is the same as for the TMS320C203 in this datasheet, but adapted for a MCS
51 controller. It generates a differential in-phase (sine) signal between the VOUTA and VOUTB pins, and it’s quadrature
(cosine) signal as the differential signal between VOUTC and VOUTD.
The on-chip timer is used to generate interrupts at a fixed frequency. The related interrupt service routine pulses
LDAC low to update all 4 DACs simultaneously, then fetches and writes the next sample to all 4 DACs. The samples are stored as a look-up table, which describes one full period of a sine wave.
The serial port of the controller is used in Mode 0, which transmits 8 bits of data on RxD, accompanied by a synchronous clock on TxD. Two writes concatenated together are required to write a complete word to the
TLV5604. The CS and FS signals are provided in the required fashion through control of IO port 3, which has bit addressable outputs.
MCS is a registered trademark of Intel Corporation.
20
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TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
; Processor: 80C51
;
; Description:
;
; This program generates a differential in–phase (sine) on (OUTA–OUTB) and it’s
; quadrature (cosine) as a differential signal on (OUTC–OUTD).
;
1998, Texas Instruments Incorporated
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– –––––––––
NAME GENIQ
MAIN
ISR
SEGMENT CODE
SEGMENT CODE
SINTBL
VAR1
STACK
SEGMENT CODE
SEGMENT DATA
SEGMENT IDATA
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
; Code start at address 0, jump to start
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
CSEG AT 0
LJMP start ; Execution starts at address 0 on power–up.
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
; Code in the timer0 interrupt vector
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
CSEG AT 0BH
LJMP timer0isr ; Jump vector for timer 0 interrupt is 000Bh
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
; Global variables need space allocated
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
Temp_ptr:
RSEG VAR1
DS 1 rolling_ptr: DS 1
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
; Interrupt service routine for timer 0 interrupts
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
RSEG ISR timer0isr:
PUSH PSW
PUSH ACC
CLR
SETB
INT1
INT1
; pulse LDAC low
; to latch all 4 previous values at the same time
; 1st thing done in timer isr => fixed period
CLR T0 ; set CS low
; The signal to be output on each DAC is a sine function.
; One cycle of a sine wave is held in a table @ sinevals as 32 samples of msb,
; lsb pairs (64 bytes). We have one pointer which rolls round this table,
; rolling_ptr, incrementing by 2 bytes (1 sample) on each interrupt (at the end of
; this routine).
; The DAC samples are read at an offset to this rolling pointer:
; DAC Function Offset from rolling_ptr
; A sine
; B inverse sine
0
32
; C cosine
; D inverse cosine
MOV
MOV
DPTR,#sinevals
R7,rolling_ptr
16
48
; set DPTR to the start of the table of sine signal values
; R7 holds the pointer into the sine table
MOV A,R7
MOVC A,@A+DPTR
CLR
MOV
INC
T1
SBUF,A
R7
MOV A,R7
MOVC A,@A+DPTR
; get DAC A msb
; msb of DAC A is in the ACC
; transmit it – set FS low
; send it out the serial port
; increment the pointer in R7
; to get the next byte from the table
; which is the lsb of this sample, now in ACC
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21
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
A_MSB_TX:
JNB
CLR
MOV
TI,A_MSB_TX ; wait for transmit to complete
TI
SBUF,A
; clear for new transmit
; and send out the lsb of DAC A
; DAC C next
; DAC C codes should be taken from 16 bytes (8 samples) further on in the sine table
; – this gives a cosine function
MOV
ADD
ANL
MOV
A,R7
A,#0FH
A,#03FH
R7,A
; pointer in R7
; add 15 – already done one INC
; wrap back round to 0 if > 64
; pointer back in R7
MOVC A,@A+DPTR
ORL A,#01H
; get DAC C msb from the table
; set control bits to DAC C address
A_LSB_TX:
JNB TI,A_LSB_TX ; wait for DAC A lsb transmit to complete
SETB T1 ; toggle FS
CLR
CLR
MOV
T1
TI
SBUF,A
; clear for new transmit
; and send out the msb of DAC C
INC
MOV
R7
A,R7
MOVC A,@A+DPTR
; increment the pointer in R7
; to get the next byte from the table
; which is the lsb of this sample, now in ACC
C_MSB_TX:
JNB
CLR
MOV
TI,C_MSB_TX ; wait for transmit to complete
TI ; clear for new transmit
SBUF,A ; and send out the lsb of DAC C
; DAC B next
; DAC B codes should be taken from 16 bytes (8 samples) further on
; in the sine table – this gives an inverted sine function
MOV A,R7 ; pointer in R7
ADD
ANL
MOV
A,#0FH
A,#03FH
R7,A
; add 15 – already done one INC
; wrap back round to 0 if > 64
; pointer back in R7
MOVC A,@A+DPTR
ORL A,#02H
C_LSB_TX:
JNB TI,C_LSB_TX
SETB T1
CLR T1
CLR TI
MOV SBUF,A
INC
MOV
R7
A,R7
MOVC A,@A+DPTR
; get DAC B msb from the table
; set control bits to DAC B address
; wait for DAC C lsb transmit to complete
; toggle FS
; clear for new transmit
; and send out the msb of DAC B
; get DAC B LSB
; increment the pointer in R7
; to get the next byte from the table
; which is the lsb of this sample, now in ACC
B_MSB_TX:
JNB
CLR
MOV
TI,B_MSB_TX
TI
SBUF,A
; wait for transmit to complete
; clear for new transmit
; and send out the lsb of DAC B
22
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•
DALLAS, TEXAS 75265
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
; DAC D next
; DAC D codes should be taken from 16 bytes (8 samples) further on in the sine table
; – this gives an inverted cosine function
MOV A,R7 ; pointer in R7
ADD
ANL
MOV
A,#0FH
A,#03FH
R7,A
; add 15 – already done one INC
; wrap back round to 0 if > 64
; pointer back in R7
MOVC A,@A+DPTR
ORL A,#03H
B_LSB_TX:
JNB TI,B_LSB_TX
SETB T1
CLR T1
CLR
MOV
TI
SBUF,A
INC R7
MOV A,R7
MOVC A,@A+DPTR
; get DAC D msb from the table
; set control bits to DAC D address
; wait for DAC B lsb transmit to complete
; toggle FS
; clear for new transmit
; and send out the msb of DAC D
; increment the pointer in R7
; to get the next byte from the table
; which is the lsb of this sample, now in ACC
D_MSB_TX:
JNB
CLR
MOV
TI,D_MSB_TX
TI
SBUF,A
; wait for transmit to complete
; clear for new transmit
; and send out the lsb of DAC D
; increment the rolling pointer to point to the next sample
; ready for the next interrupt
MOV
ADD
ANL
MOV
A,rolling_ptr
A,#02H
A,#03FH rolling_ptr,A
; add 2 to the rolling pointer
; wrap back round to 0 if > 64
; store in memory again
D_LSB_TX:
JNB TI,D_LSB_TX
CLR TI
SETB T1
SETB T0
POP
POP
ACC
PSW
; wait for DAC D lsb transmit to complete
; clear for next transmit
; FS high
; CS high
RETI
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
; Stack needs definition
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
RSEG STACK
DS 10h ; 16 Byte Stack!
POST OFFICE BOX 655303
•
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23
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
APPLICATION INFORMATION
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
; Main program code
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
RSEG MAIN start:
MOV SP,#STACK–1 ; first set Stack Pointer
CLR
MOV
MOV
MOV
A
SCON,A
TMOD,#02H
TH0,#038H
SETB INT1
SETB T1
SETB T0
SETB ET0
SETB EA
MOV rolling_ptr,A
SETB TR0
; set serial port 0 to mode 0
; set timer 0 to mode 2 – auto-reload
; set TH0 for 5 kHs interrupts
; set LDAC = 1
; set FS = 1
; set CS = 1
; enable timer 0 interrupts
; enable all interrupts
; set rolling pointer to 0
; start timer 0 always:
JMP always ; while(1) !
RET
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
; Table of 32 sine wave samples used as DAC data
;––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ––––––
RSEG SINTBL sinevals:
DW
DW
DW
DW
DW
DW
01000H
0903EH
05097H
0305CH
0B086H
070CAH
DW
DW
DW
DW
DW
DW
DW
DW
DW
DW
DW
0F0E0H
0F06EH
0F039H
0F06EH
0F0E0H
070CAH
0B086H
0305CH
05097H
0903EH
01000H
DW
DW
DW
DW
DW
DW
DW
DW
DW
DW
DW
DW
DW
DW
DW
06021H
0A0E8H
0C063H
040F9H
080B5H
0009FH
00051H
00026H
00051H
0009FH
080B5H
040F9H
0C063H
0A0E8H
06021H
END
24
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
MECHANICAL DATA
D (R-PDSO-G**)
14 PIN SHOWN
PLASTIC SMALL-OUTLINE PACKAGE
14
0.050 (1,27)
0.020 (0,51)
0.014 (0,35)
8
0.010 (0,25) M
0.008 (0,20) NOM
0.157 (4,00)
0.150 (3,81)
0.244 (6,20)
0.228 (5,80)
Gage Plane
1
A
7
0
°
– 8
°
0.010 (0,25)
0.044 (1,12)
0.016 (0,40)
0.069 (1,75) MAX
0.010 (0,25)
0.004 (0,10)
Seating Plane
0.004 (0,10)
DIM
PINS **
A MAX
A MIN
8 14 16
0.197
(5,00)
0.189
(4,80)
0.344
(8,75)
0.337
(8,55)
0.394
(10,00)
0.386
(9,80)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15).
D. Falls within JEDEC MS-012
4040047 / D 10/96
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
25
TLV5604
2.7-V TO 5.5-V 10-BIT 3-
µ
S QUADRUPLE DIGITAL-TO-ANALOG CONVERTERS
WITH POWER DOWN
SLAS176B – DECEMBER 1997 – REVISED JULY 2002
MECHANICAL DATA
PW (R-PDSO-G**)
14 PIN SHOWN
PLASTIC SMALL-OUTLINE PACKAGE
0,65
0,30
0,19
0,10 M
14 8
1
A
7
4,50
4,30
6,60
6,20
0,15 NOM
Gage Plane
0
°
– 8
°
0,25
0,75
0,50
1,20 MAX
0,15
0,05
PINS **
DIM
A MAX
A MIN
8
3,10
2,90
14
5,10
4,90
Seating Plane
0,10
16
5,10
4,90
20
6,60
6,40
24
7,90
7,70
28
9,80
9,60
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
4040064 / E 08/96
26
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
27-Aug-2009 www.ti.com
PACKAGING INFORMATION
Orderable Device
TLV5604CD
TLV5604CDG4
TLV5604CDR
TLV5604CDRG4
TLV5604CPW
TLV5604CPWG4
TLV5604CPWR
TLV5604CPWRG4
TLV5604ID
TLV5604IDG4
TLV5604IPW
TLV5604IPWG4
TLV5604IPWR
TLV5604IPWRG4
Status
(1)
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
Package
Type
SOIC
SOIC
SOIC
SOIC
TSSOP
TSSOP
TSSOP
TSSOP
SOIC
SOIC
TSSOP
TSSOP
TSSOP
TSSOP
Package
Drawing
D
D
D
D
PW
PW
PW
PW
D
D
PW
PW
PW
PW
Eco Plan
(2)
Pins Package
Qty
16 40 Green (RoHS & no Sb/Br)
Lead/Ball Finish MSL Peak Temp
(3)
CU NIPDAU Level-1-260C-UNLIM
16 CU NIPDAU Level-1-260C-UNLIM
16
40 Green (RoHS & no Sb/Br)
2500 Green (RoHS & no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
16 CU NIPDAU Level-1-260C-UNLIM
16
16
16
16
16
16
2500 Green (RoHS & no Sb/Br)
90 Green (RoHS & no Sb/Br)
90 Green (RoHS & no Sb/Br)
2000 Green (RoHS & no Sb/Br)
2000 Green (RoHS & no Sb/Br)
40 Green (RoHS & no Sb/Br)
40 Green (RoHS & no Sb/Br)
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
16
16
16
16
90 Green (RoHS & no Sb/Br)
90 Green (RoHS & no Sb/Br)
2000 Green (RoHS & no Sb/Br)
2000 Green (RoHS & no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM
CU NIPDAU
CU NIPDAU
CU NIPDAU
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
27-Aug-2009 provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 2
www.ti.com
TAPE AND REEL INFORMATION
PACKAGE MATERIALS INFORMATION
25-Sep-2009
*All dimensions are nominal
Device
TLV5604CDR
TLV5604CPWR
TLV5604IPWR
Package
Type
Package
Drawing
SOIC
TSSOP
TSSOP
D
PW
PW
Pins
16
16
16
SPQ
2500
2000
2000
Reel
Diameter
(mm)
Reel
Width
W1 (mm)
330.0
16.4
330.0
330.0
12.4
12.4
A0
(mm)
6.5
6.9
6.9
B0
(mm)
10.3
5.6
5.6
K0
(mm)
P1
(mm)
2.1
1.6
1.6
8.0
W
(mm)
Pin1
Quadrant
16.0
8.0
12.0
8.0
12.0
Q1
Q1
Q1
Pack Materials-Page 1
www.ti.com
PACKAGE MATERIALS INFORMATION
25-Sep-2009
*All dimensions are nominal
Device
TLV5604CDR
TLV5604CPWR
TLV5604IPWR
Package Type Package Drawing Pins
SOIC
TSSOP
TSSOP
D
PW
PW
16
16
16
SPQ
2500
2000
2000
Length (mm) Width (mm) Height (mm)
346.0
346.0
346.0
346.0
346.0
346.0
33.0
29.0
29.0
Pack Materials-Page 2
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TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards.
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Table of contents
- 1 features
- 1 applications
- 1 description
- 2 functional block diagram
- 3 Terminal Functions
- 3 absolute maximum ratings over operating free-air temperature range (unl\ ess otherwise noted)
- 4 recommended operating conditions
- 4 electrical characteristics over recommended operating free-air temperatu\ re range (unless otherwise noted)
- 4 static DAC specifications
- 5 individual DAC output specifications
- 5 reference input (REFINAB, REFINCD)
- 5 digital inputs (D0–D11, CS\, WEB, LDAC\, PD\)
- 5 power supply
- 6 analog output dynamic performance
- 7 digital input timing requirements
- 7 PARAMETER MEASUREMENT INFORMATION
- 8 TYPICAL CHARACTERISTICS
- 12 APPLICATION INFORMATION
- 12 general function
- 12 serial interface
- 13 serial clock frequency and update rate
- 13 data format
- 14 TLV5604 interfaced to TMS320C203 DSP
- 14 Hardware interfacing
- 14 Software
- 20 TLV5604 interfaced to MCS(R)51 microcontroller
- 20 hardware interfacing
- 20 software
- 21 Code
- 25 MECHANICAL DATA
- 25 D (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE
- 26 PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE