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Texas Instruments 25W Digital Input Amplifier with EQ and 2-band DRC User guides
User's Guide
SLOU281 – January 2010
25W Digital Input Amplifier With EQ and 2-Band DRC
This manual describes the operation of the TAS5713EVM to evaluate the performance of the TAS5713
integrated digital audio power amplifier. The main contents of this document are:
• How to properly connect a TAS5713 Evaluation Module (EVM) and the details of the EVM
• How to install and use the GUI to program the TAS5713EVM
• How to use the audio processing features such as EQ and Dynamic Range Control (DRC)
• Quick-Start Guide for the common modes in which TAS5713EVM can be used
1
2
3
4
5
Contents
Overview ..................................................................................................................... 3
1.1
TAS5713EVM and MC57xxPSIA Features ..................................................................... 4
Installation .................................................................................................................... 4
2.1
EVM Installation .................................................................................................... 4
2.2
Software Installation ............................................................................................... 7
Using the EVM Software ................................................................................................... 9
3.1
Connect the GUI to the EVM ..................................................................................... 9
3.2
I2C Memory Tool ................................................................................................... 9
3.3
Volume Function .................................................................................................. 10
3.4
Biquad GUI ........................................................................................................ 10
3.5
DRC GUI ........................................................................................................... 11
Jumpers and Control Utilities on MC57xxPSIA board ................................................................ 13
4.1
RCA/OPTICAL Jumpers ......................................................................................... 13
4.2
Switches ........................................................................................................... 13
4.3
LED Indicators .................................................................................................... 13
Board Layouts, Bill of Materials, and Schematic ...................................................................... 14
5.1
TAS5713EVM and MC57xxPSIA Board Layouts ............................................................ 14
5.2
Bill of Materials .................................................................................................... 16
5.3
Schematics ........................................................................................................ 17
List of Figures
.....................................................................................
....................................................................
General Connection Picture ...............................................................................................
Connecting TAS5713EVM to MC57xxPSIA .............................................................................
BTL Connection .............................................................................................................
Process Flow for TAS5707 UG ...........................................................................................
Main GUI Display ...........................................................................................................
Memory Tool Window ......................................................................................................
Volume Control ............................................................................................................
Selecting Biquad GUI .....................................................................................................
Filter Creation Tool Window .............................................................................................
DRC Options ...............................................................................................................
TAS5713EVM Top Composite Assembly ..............................................................................
1
TAS5713EVM Printed-Circuit Board
3
2
Complete System and EVM Signal Path Overview
3
3
4
5
6
7
8
9
10
11
12
13
4
5
6
8
8
9
10
10
11
11
14
Equibit is a trademark of Texas Instruments.
I2C is a trademark of Philips Corporation.
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14
TAS5713EVM Top Copper Assembly .................................................................................. 14
15
MC57xxPSIA Top Assembly ............................................................................................. 15
List of Tables
2
1
Recommended Power Supplies........................................................................................... 6
2
Bill of Materials for TAS5713EVM
......................................................................................
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Overview
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1
Overview
The TAS5713EVM evaluation module demonstrates the TAS5713 device from Texas Instruments. The
TAS5713 combines a high-performance PWM processor with a class-D audio power amplifier. This EVM
can be configured with two bridge-tied loads (BTL) (2.0). For detailed information about the TAS5713EVM
device, review the (device data sheet SLOS637). The Pulse Width Modulator (PWM) is based on TI's
Equibit™ technology. The TAS5713 has additional audio processing features like 3D, Bass Boost and
2-band DRC.
The EVM software, with its graphic user interface (GUI), facilitates evaluation by providing access to the
TAS5713EVM registers through a USB port. See the Using the EVM Software section for further details.
Figure 1. TAS5713EVM Printed-Circuit Board
The EVM together with other TI components on this board, is a complete 2.1-channel digital audio
amplifier system. The MC57XXPSIA Controller board includes a USB interface, a digital input (SPDIF),
analog inputs via the ADC, power inputs, and other features like a mute function and power down.
MC57xxPSIA
TAS5713 EVM
Left
PC Interface
SPDIF/
Optical, Coax
Right
TAS5713
2CH Analog Input
From Other Source/
Digital Out
B0340-01
Figure 2. Complete System and EVM Signal Path Overview
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Installation
1.1
TAS5713EVM and MC57xxPSIA Features
•
•
•
•
•
•
•
•
2
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Channel evaluation module design
Self-contained protection systems and control pins
USB interface
Standard I2S data input using optical or coaxial inputs
Analog input through analog-to-digital converter
Subwoofer connection—the PWM terminal provides the PWM signal and power to an external
subwoofer board
Double-sided, plated-through PCB, 1oz copper, 2mm
Access to control signal gain and data format through EVM-software GUI
Installation
This section describes the EVM and software installation.
2.1
EVM Installation
Analog In to ADC
MC57xxPSIA
Controller Board
5V Supply for
System Power
Coaxial SPDIF Input
Speaker
Out A & B
Optical SPDIF Input
Speaker
Out C & D
USB Port
8V–26V Supply for Output Power
Figure 3. General Connection Picture
The following are the basic tools for the initial EVM power up.
• 5V, 1A power supply (VIN)
• 8–26V, 4A power supply (PVDD)
• Banana-plug test leads for power supplies and speakers
• Optical or coaxial cable for SPDIF interface based on signal source
• USB cable
• EVM software
• Two 8Ω speakers or loads
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The following sections describe the TAS5713EVM board in regards to power supply (PSU) and system
interfaces.
2.1.1
Connecting the TAS5713EVM to MC57xxPSIA
On the right side of the MC57xxPSIA is a terminal block and another on the left of the TAS5713EVM
(labeled J1). Carefully place the MC57xxPSIA block above the TAS5713EVM block and gently push down.
Figure 4. Connecting TAS5713EVM to MC57xxPSIA
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Installation
2.1.2
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PSU Interface
The TAS5713EVM is powered by two power supplies connected to the MC57xx controller board: a 5V
power supply (VIN), and a 8V-to-26V (PVDD) power supply. The 3.3V level is generated from the 5V
supply by an on-board voltage regulator.
NOTE: The power-supply cable length must be minimized. Increasing the length of the PSU cable
increases the distortion of the amplifier at high output levels and low frequencies.
The maximum output-stage supply voltage depends on the speaker load resistance. See the
recommended maximum supply voltage in the TAS5713EVM data sheet.
Table 1. Recommended Power Supplies
Description
Voltage Limitations (8-Ω Load)
Current Recommendations
System power supply
5V
1A
Output power stage supply
8–26V
4A (1)
(1)
2.1.3
The rated current corresponds to two channels, full scale.
Loudspeaker Connectors
CAUTION
All speaker outputs are biased at Vcc/2 and must not be connected to ground
(e.g., through an oscilloscope ground).
Loudspeaker connections vary by device setup. When connecting a speaker in BTL mode, connect the
speaker’s two terminals (A and B or C and D) across two outputs on the TAS5713EVM.
Speakers or loads can be connected to the outputs A-D with clip leads, or cables can be made
with female connectors (JST VHR-2N) that can mate to male connectors on the EVM board.
–
OUT B
+
OUT A
Figure 5. BTL Connection
2.1.4
USB Interface
The TAS5713 registers are accessed through I2C™ bus lines SDA and SCL. The USB circuit and USB
connector on the MC57xxPSIA board facilitates the connection between a host computer and the device.
The EVM USB circuit is powered by the 5V USB line of the host PC and is independent of the power
supplies available on the board. The USB device that is used is a TAS1020B from Texas Instruments.
2.1.5
Digital Audio Interface SPDIF
The Digital Audio Interface SPDIF (RCA/OPTO) accepts digital audio data using the I2S protocol. See the
TAS5713 data sheet for more information.
The RCA connector and the OPTO connector are the two SPDIF interfaces on the MC57xxPSIA board.
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The switch S3 toggles between the OPTO and RCA connector to accommodate the signal source. When
the RCA cable or optical cable is connected and the signal source is powered up, verify that the SPDIF
lock indicator (blue LED5) illuminates, confirming that a viable signal is available to the device. Install a
jumper on JP4 across the middle pin and the pin marked SPDIF to connect the digital source to SDIN1.
Install a jumper on JP5 to connect the digital source to SDIN2.
For detailed information on how the data and clocks are provided to the TAS5713, see the schematic
appearing at the end of this document and the DIR9001 device data sheet (SLES198).
2.1.6
ADC Interface
In the absence of a digital signal source, the PCM1808 ADC can be used to convert an analog audio
signal to a digital signal to the TAS5713. The DIR9001 still provides clock signals to the ADC in this
process. A 12MHz crystal is installed on the MC57xxPSIA board. The ADC is an additional feature of this
board to provide flexibility in sourcing an audio signal to the TAS5713. Review the PCM1808 data sheet
(SLES177) for a detailed description of the ADC on this EVM. Install the jumper on JP4 across the middle
pin and the pin marked ADC to select ADC as the source for SDIN1.
2.1.7
Board Power-Up General Guidelines
Connect the MC-57xx and the TAS5713EVM boards by locating pin 1 on each board, indicated by a small
white triangle. The MC-57xx plugs down onto the TAS5713EVM board (i.e., the TAS5713EVM board fits
underneath the MC57xxPSIA board). Pin 1 on each board must be connected to each other.
Install the EVM software on the PC before powering up the board. After connecting the loudspeakers or
other loads, power supplies, and the data line, power up the 5V power supply first; then power up the
PVDD power supply. It is recommended initially to set the PVDD level to 10V, then ramp it up to 20V to
verify cable connections.
2.2
Software Installation
Download the TAS570x GDE from the TI Web site. The TI Web site always has the latest release and any
updates to versions of the GUI.
Execute the GUI install program, Setup.exe. Once the program is installed, the program group and
shortcut icon is created in Start → Program → Texas Instruments Inc → TAS570X GDE. The GUI
launches as shown in Figure 7.
Select the appropriate tab; in this case, select TAS5713 tab. It has two subwindows. One shows the
Process Flow window. From the Process Flow window, each of the signal-processing function tools can
be selected by clicking on it. The Biquad GUI and the DRC GUI can be opened by right-clicking. This
window also shows Input select, Mode select, Channel, and Master Volume. All functions are shown in the
same order as in the device.
The other subwindow, Properties window, has the properties that a user can update by selecting from the
available options. The properties available depend on the device selected. From the main window, the
user must set three properties before connecting to the EVM.
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I2C Subaddress in Red
R
0x72
0x70
+
7BQ
29–2F
2BQ
58, 59
0x73
Vol1
0x71
0x46[0]
DRC
L
0x76
Vol2
0x74 v2im1
+
7BQ
30–36
2BQ
5C, 5D
2
2
I C:57
I C:56
VDISTB VDISTA
0x77
0x75
2BQ
5E, 5F
Vol
0x46[1]
DRC
Vol
2BQ
5A, 5B
B0321-09
Figure 6. Process Flow for TAS5707 UG
Figure 7. Main GUI Display
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Using the EVM Software
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3
Using the EVM Software
3.1
Connect the GUI to the EVM
Open the GUI. Select the properties window: 1-band or 2-band DRC and Stereo or Woofer. Stereo is
selected for BTL and Woofer is selected for PBTL Mode.
This sends the initialization commands to the device. Master volume is in mute. Select the master volume
function. Type the required volume in the properties window. At this time, audio, if connected properly,
plays through the device. The All channel shutdown button must be un-checked. When the Connect
command is issued, if an error appears indicating a USB problem, check the connections, and press the
USB RESET button on the controller board. Then disconnect and re-connect from the Target menu.
3.2
I2C Memory Tool
This tool can be opened from GDE (Tools → I2C Memory Tool) or independent of GDE from Start →
Program → Texas Instruments Inc → Memory Tool.
Select I2C as show in Figure 8.
Figure 8. Memory Tool Window
I2C registers can be written or read using this tool. The I2C command file can be sent by selecting the
command file and Execute command.
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Using the EVM Software
3.3
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Volume Function
The Individual and Master volume can be selected, and the required volume value can be entered in the
property Window after selecting the function with the mouse (see Figure 9).
Figure 9. Volume Control
3.4
Biquad GUI
Using the right button of mouse, select Biquad GUI (Figure 10).
Figure 10. Selecting Biquad GUI
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Figure 11. Filter Creation Tool Window
A check mark selects the Biquad. If not selected, the Biquad is in ALL PASS Mode.
The frequency response for the current settings can be viewed and adjusted in Frequency Response
Window Tab (Figure 11). The individual Biquad gains must be within ±12db.
Apply from the filter data window sends all the three banks of coefficients (providing auto bank is
enabled).
3.5
DRC GUI
The TAS5713 supports 1-band and 2-band DRC. Select the drc mode from properties window. Then set
the DRC threshold by opening the drc gui and adjusting the sliders as shown in Figure 12.
Figure 12. DRC Options
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Using the EVM Software
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The crossover frequency for the 2-band DRC by default is 300Hz. This can be modified by entering a new
value in the property window.
PBTL Mode: To run the device in PBTL Mode, the PBTL pin must be driven high. Then in the GUI, select
woofer instead of stereo (stereo is the default value). The source for PBTL is selected as (L+R)/2, but that
be changed by updating input mixer values.
3.5.1
MODULATION SCHEMES
Using The FAULT PIN As An Error Indicator:
The A_SEL_FAULTZ pin is the I2C device address select by default. To re-define this pin as an output,
write '1' to bit D1 of reg 0X05. Once re-programmed as output, this pin indicates a fault condition. Output
will go low for Overcurrent (OC) or undervoltage (UVP) error or overtemperature error (OTE) or
overvoltage error
Common Configurations:
1. 2 × BTL BD Mode
2. 2 × BTL AD Mode
Note:
AD: AD Modulation-Outputs are 180° out of phase
BD: BD Modulation
BTL: Bridge-Tied Load
3.5.1.1
1.
2.
3.
4.
2 X BTL BD (BD mode)
Set up the hardware.
Select the Input MUX from GDE. In the properties window, select BD Mode.
GDE: Target > Connect.
Finally uncheck the shutdown box to bring the device out of Shutdown mode, and adjust the Master
Volume as desired.
3.5.1.2
1.
2.
3.
4.
2 X BTL AD (Default: AD mode)
Set up the hardware.
Select the Input MUX from GDE. In the properties window, select AD Mode.
GDE: Target > Connect.
Finally uncheck the shutdown box to bring the device out of Shutdown mode, and adjust the Master
Volume as desired.
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Jumpers and Control Utilities on MC57xxPSIA board
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4
Jumpers and Control Utilities on MC57xxPSIA board
4.1
RCA/OPTICAL Jumpers
Select the jumper to reflect the source whether it is RCA or OPTICAL.
4.2
Switches
JP1 on the daughter card is for PBTL select. Jumper IN means non-PBTL mode. For PBTL, remove this
jumper.
Reset is an active-low function. Pressing the master reset switch (S2) resets the TAS5713 device; USB
RESET (S1) resets the USB bus. Pressing PDNZ (S4) powers down the TAS5713, and pressing MUTE
(S5) mutes (volume mute) the TAS5713.
4.3
LED Indicators
LED1 : USB Power connector installed at J1
LED2 : 3.3V Power is valid
LED3: RCA connection made
LED4: Optical connection made
LED5: SPDIF signal locked
LED6: FAULT (This LED should be ignored until FAULT is programmed to be an output via I2C write
to reg 0X05.)
LED7: PDN switch (S4) is pressed (closed)
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Board Layouts, Bill of Materials, and Schematic
5
Board Layouts, Bill of Materials, and Schematic
5.1
TAS5713EVM and MC57xxPSIA Board Layouts
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Figure 13. TAS5713EVM Top Composite Assembly
Figure 14. TAS5713EVM Top Copper Assembly
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Board Layouts, Bill of Materials, and Schematic
Figure 15. MC57xxPSIA Top Assembly
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Board Layouts, Bill of Materials, and Schematic
5.2
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Bill of Materials
Table 2. Bill of Materials for TAS5713EVM
MANU Part No.
QTY
REF DES
Vendor
Part No.
Description
Vendor
MANU
Texas
Instruments
Texas Instruments
TI-SEMICONDUCTORS
TAS5713PHP
1
U1
TAS5713PHP
15W DIGAMP WITH DAP HTQFP48-PHP ROHS
GRM188R71H222KA01D
1
C14
490-1500-1
CAP SMD0603 CERM 2200PFD 50V 10% X7R ROHS
Digi-Key
Murata
ECJ-1VB1H472K
2
C10, C13
PCC1780CT
CAP SMD0603 CERM 4700PFD 50V 10% X7R ROHS
Digi-Key
Panasonic
GRM188R71H103MA01D
4
C28, C30, C32,
C34
490-1511-1
CAP SMD0603 CERM 0.01UFD 50V 20% X7R ROHS
Digi-Key
Murata
ECJ-1VB1E473K
4
C9,C16,C19,C21
PCC2284CT
CAP SMD0603 CERM 0.033UFD 50V 10% X7R ROHS
Digi-Key
Panasonic
ECJ-1VB1H333K
2
C11, C13
PCC1771CT
CAP SMD0603 CERM 047UFD 25V 10% X7R ROHS
Digi-Key
Panasonic
ECJ-1VB1C104K
4
C2, C4, C6, C7
PCC1762CT
CAP SMD0603 CERM 0.1UFD 16V 10% X7R ROHS
Digi-Key
Panasonic
ECJ-1VB1H104K
8
C17, C20, C22,
C23, C27, C29,
C31, C33
PCC2398CT
CAP SMD0603 CERM 0.1UFD 50V 10% X7R ROHS
Digi-Key
Panasonic
C1206C684K5RACTU
2
C25, C26
399-3500-1
CAP SMD1206 CERM 0.68UFD 50V 10% X7R ROHS
Digi-Key
Kemet
TMK107BJ105KA
2
C8, C15
587-1248-1
CAP SMD0603 CERM 0.1UFD 25V 10% X5R ROHS
Digi-Key
Taiyo Yuden
C1680X5R0J475M
1
C3
445-1417-1
CAP SMD603 CERM 4.7UFD 6.3V 20% X5R ROHS
Digi-Key
TDK
EEE1CA100SR
2
C1, C5
PCE3878CT
CAP SMD ELECT 10UFD 16V 20% VS-B ROHS
Digi-Key
Panasonic
ECA-1VM101
1
C35
P5165
CAP ALUM ELEC M RADIAL 100UFD 35V 20% ROHS
Digi-Key
Panasonic
EC-1VM221BJ
2
C18, C24
P10419TB
CAP ALUM ELEC M RADIAL 200UFD 35V 20% ROHS
Digi-Key
Panasonic
CAPACITORS
RESISTORS
ERJ-3GEY0R00V
1
R3
P0.0GCT
RESISTOR SMD0603 0.0 OHM 5% THICK FILM 1/10W
ROHS
Digi-Key
Panasonic
ERJ-3GEYJ3R3V
4
R11, R12, R13,
R14
P3.3GCT
RESISTOR SMD0603 3.3 OHM 5% 1/10W ROHS
Digi-Key
Panasonic
ERJ-3GEYJ471V
2
R8, R9
P470GCT
RESISTOR SMD0603 470 OHM 5% 1/10W ROHS
Digi-Key
Panasonic
ERJ-3EKF1002V
3
R4, R6, R7
P10.0KHCT
RESISTOR SMD0603 10.01% THICK FILM 1/10W ROHS
Digi-Key
Panasonic
RC0603FR-0718K2L
1
R5
311-18.2KHCT
RESISTOR smd0603 THICK FILM 18.2K 1% 1/10W SMD
0603
Digi-Key
Yageo
ERJ-3GEYJ104V
1
R2
P100KGCT
RESISTOR AMD0603 100KK OHM 5% THICK FILM 1/10W
ROHS
Digi-Key
Panasonic
A7503AY-150M
4
L1–L4
A7503AY-150M
INDUCTOR SERIES 11RHBP/A7503AY, 15UH/3.5A ROHS
Toko
Toko
INDUCTORS
HEADERS AND JACKS
PBC09DAAN
1
J1
S2011E-09
HEADER THRU MALE, 2X9 100LS GOLD ROHS
Digi-Key
Sullins
PBC02SAAN
1
JP1
S1011E-02
HEADER THRU MALE, 2 PIN 100LS GOLD ROHS
Digi-Key
Sullins
B2PS-VH (LF)(SN)
2
J2, J3
455-1255
JACK JST-VH RA 2-PIN 3.96mmLS ROHS
Digi-Key
JST
Digi-Key
Sullins
SHUNTS
SPC02SYAN
1
JP1
S9001
SHUNT, BLACK AU FLASH 0.100LS
STANDOFFS AND HARDWARE
2027
4
NA
2027K
StandofF,4-40,0.5IN 3/16IN, DIA ALUM RND F-F
Digi-Key
Keystone
PMS 440 0025 PH
4
NA
H342
4-40 Screw, Steel 0.250 IN
Digi-Key
Building Fasteners
Component Count:
65
COMPONENTS NOT ASSEMBLED
R1, R10
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18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
J1
PGND
AVDD
C35
100ufd/35V
M
PGND
+
PVDD
MC57xx
CONTROLLER
BOARD
PGND
100K
0603
R2
DNP
0603
R1
AVDD
R3
PGND
0.1ufd/16V
0603
PGND
C4
4.7ufd/6.3V
0603
0.0
0603
C3
PGND
+
AVDD
PGND
PGND
10.0K
0603
R6
18.2K
0603
R5
10.0K
0603
R4
17
16
15
14
13
+
27
42 36 1 11
9
C6
28
470
0603
R9
7
29 30
C7
31
HTQFP48-PHP
32
C8
U1
TAS5713PHP
.047ufd/25V
0603
C13
33
C16
C9
34 35
36
PGND
0.033ufd/50V
0603
39
40
41
42
43
44
45
46
47
48
PGND
10ufd/16V
VS-B
C5
PGND
PGND
0.1ufd/16V
0603
PGND
0.1ufd/16V
0603
PGND
PowerPad
U1
PGND
1.0ufd/25V
0603
0.033ufd/50V
0603
38
85
470
0603
R8
PGND
PGND
37
26
10
.047ufd/25V
0603
C11
1.0ufd/25V
0603
C15
2200pfd/50V
0603
C14
DNP
0603
R10
23
25
12
AVSS
C12
4700pfd/50V
0603
C10
PGND
10.0K
0603
R7
4700pfd/50V
0603
2
1
24
22
21
20
19
18
PGND
0.1ufd/16V
0603
10ufd/16V
VS-B
AVSS
C2
C1
AVDD
JP1
AVDD
PGND
PGND
0.033ufd/50V
0603
C21
PVDD
PGND
0.1ufd/50V
0603
C23
PGND
0.1ufd/50V
0603
C22
PGND
C20
0.1ufd/50V
0603
0.033ufd/50V
0603
PVDD
C19
PGND
0.1ufd/50V
0603
C17
C24
220ufd/35V
M
PGND
+
PVDD
220ufd/35V
M
C18
PGND
+
PVDD
L1
15uH/3.5A
A7503AY
L4
15uH/3.5A
A7503AY
L3
15uH/3.5A
A7503AY
L2
15uH/3.5A
A7503AY
0.68ufd/50V
1206
C26
0.68ufd/50V
1206
C25
C27
PGND
0.1ufd/50V
0603
C33
PGND
0.1ufd/50V
0603
C31
PGND
0.1ufd/50V
0603
C29
PGND
0.1ufd/50V
0603
PGND
0.01ufd/50V
0603
C34
3.3
0603
R14
PGND
0.01ufd/50V
0603
C32
3.3
0603
R13
PGND
0.01ufd/50V
0603
C30
3.3
0603
R12
PGND
0.01ufd/50V
0603
C28
3.3
0603
R11
1
2
1
2
C
D
A
B
J3
J2
5.3
PGND PGND PGND PGND
STANDOFFS
www.ti.com
Board Layouts, Bill of Materials, and Schematic
Schematics
The schematic for TAS5713EVM follows. The schematics for MC57xxPSIA appear on the following pages.
25W Digital Input Amplifier With EQ and 2-Band DRC
17
www.ti.com
18
USB I/O
(A0 IN DEFAULT)
USB BOOT EPROM
USB INTERFACE
USB RESET
DECOUPLING
U3
TAS1020BPFB
TO EVM BOARD
ENGINEERING EVALUATION ONLY
Board Layouts, Bill of Materials, and Schematic
25W Digital Input Amplifier With EQ and 2-Band DRC
Copyright © 2010, Texas Instruments Incorporated
SLOU281 – January 2010
Submit Documentation Feedback
SLOU281 – January 2010
Submit Documentation Feedback
Copyright © 2010, Texas Instruments Incorporated
5V POWER INPUT
MASTER RESET
1-2: OPTO INPUT
2-3: RCA INPUT
SPDIF
INPUT
SELECT
SPDIF INPUT
SPDIF RECEIVER
TO ADC
3.3V@1A
OPTO INPUT
(HIGH)
RCA INPUT
(LOW)
JP1 IN: SCKO = 512 Fs
JP1 OUT: SCKO = 256 Fs (DEFAULT)
TO ADC
TO SPDIF
TO EVM BOARD
DIR9001PW
U5
H
H
FMT1 FMT0
SPDIF DECOUPLING
24Bit/MSB/I2S
DATA FORMAT
TO
EVM BOARD
TO
ADC
SPDIF
LOCK
ENGINEERING EVALUATION ONLY
www.ti.com
Board Layouts, Bill of Materials, and Schematic
25W Digital Input Amplifier With EQ and 2-Band DRC
19
20
25W Digital Input Amplifier With EQ and 2-Band DRC
Copyright © 2010, Texas Instruments Incorporated
HIGH POWER INPUT
FROM VR1
FROM
MASETER RESET
FROM USB
FROM
SPDIF
ANALOG INPUTS
IN: LIN/RIN = 1Vrms MAX.
OUT: LIN/RIN = 2Vrms MAX.
NOTES ON JUMPERS
ADC / CONNECTOR I/O
3.3V DECOUPLING
PCM1808PW
ADC
5V DECOUPLING
(SDIN2)
(SDIN1)
MUTE
PDN
FAULT
MC012
(1-2)
PSIA
(2-3)
TO EVM BOARDS
ENGINEERING EVALUATION ONLY
Board Layouts, Bill of Materials, and Schematic
www.ti.com
SLOU281 – January 2010
Submit Documentation Feedback
EVALUATION BOARD/KIT IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES
ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have
electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete
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measures typically found in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does
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Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from
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AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF
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TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or
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Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the product. This
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This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES
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EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the input voltage range of -0.5 V to 4.1 V and the output voltage range of 1 Vrms.
Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions
concerning the input range, please contact a TI field representative prior to connecting the input power.
Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM.
Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than 85°C. The EVM is designed to operate
properly with certain components above 85°C as long as the input and output ranges are maintained. These components include but are
not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified
using the EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during operation,
please be aware that these devices may be very warm to the touch.
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Copyright © 2008-2009, Texas Instruments Incorporated
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