AD817 - Octopart
a
High Speed, Low Power
Wide Supply Range Amplifier
AD817
CONNECTION DIAGRAM
FEATURES
Low Cost
High Speed
50 MHz Unity Gain Bandwidth
350 V/ms Slew Rate
45 ns Settling Time to 0.1% (10 V Step)
Flexible Power Supply
Specified for Single (+5 V) and
Dual (65 V to 615 V) Power Supplies
Low Power: 7.5 mA max Supply Current
High Output Drive Capability
Drives Unlimited Capacitive Load
50 mA Minimum Output Current
Excellent Video Performance
70 MHz 0.1 dB Bandwidth (Gain = +1)
0.04% & 0.088 Differential Gain & Phase Errors
@ 3.58 MHz
Available in 8-Pin SOIC and 8-Pin Plastic Mini-DIP
8-Pin Plastic Mini-DIP (N) and
SOIC (R) Packages
8
NULL
2
7
+VS
+IN
3
6
OUTPUT
–VS
4
5
NC
NULL
1
–IN
AD817
TOP VIEW
NC = NO CONNECT
The AD817 is fully specified for operation with a single +5 V
power supply and with dual supplies from ± 5 V to ± 15 V. This
power supply flexibility, coupled with a very low supply current
of 7.5 mA and excellent ac characteristics under all power supply conditions, make the AD817 the ideal choice for many demanding yet power sensitive applications.
PRODUCT DESCRIPTION
The AD817 is a low cost, low power, single/dual supply, high
speed op amp which is ideally suited for a broad spectrum of
signal conditioning and data acquisition applications. This
breakthrough product also features high output current drive
capability and the ability to drive an unlimited capacitive load
while still maintaining excellent signal integrity.
The 50 MHz unity gain bandwidth, 350 V/µs slew rate and settling time of 45 ns (0.1%) make possible the processing of high
speed signals common to video and imaging systems. Furthermore, professional video performance is attained by offering differential gain & phase errors of 0.04% & 0.08° @ 3.58 MHz
and 0.1 dB flatness to 70 MHz (gain = +1).
In applications such as ADC buffers and line drivers the AD817
simplifies the design task with its unique combination of a
50 mA minimum output current and the ability to drive
unlimited capacitive loads.
The AD817 is available in 8-pin plastic mini-DIP and SOIC
packages.
ORDERING GUIDE
Model
Temperature
Range
Package
Description
Package
Option
AD817AN
AD817AR
–40°C to +85°C
–40°C to +85°C
8-Pin Plastic DIP
N-8
8-Pin Plastic SOIC R-8
1kΩ
+VS
5V
3.3µF
500ns
100
90
0.01µF
HP
PULSE
GENERATOR
VIN
1kΩ
2
AD817
50Ω
3
100pF
LOAD
7
4
VOUT
6
0.01µF
CL
1000pF
TEKTRONIX
P6201 FET
PROBE
10
0%
3.3µF
1000pF
LOAD
–VS
AD817 Driving a Large Capacitive Load
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
© Analog Devices, Inc., 1995
AD817–SPECIFICATIONS (@ T = +258C, unless otherwise noted)
A
Parameter
Conditions
DYNAMIC PERFORMANCE
Unity Gain Bandwidth
Bandwidth for 0.1 dB Flatness
Gain = +1
Full Power Bandwidth1
VOUT = 5 V p-p
RLOAD = 500 Ω
VOUT = 20 V p-p
RLOAD = 1 kΩ
RLOAD = 1 kΩ
Gain = 1
Slew Rate
Settling Time to 0.1%
Total Harmonic Distortion
Differential Gain Error
(RLOAD = 150 Ω)
–2.5 V to +2.5 V
0 V–10 V Step, AV = –1
–2.5 V to +2.5 V
0 V–10 V Step, AV = –1
FC = 1 MHz
NTSC
Gain = +2
Differential Phase Error
(RLOAD = 150 Ω)
NTSC
Gain = +2
Settling Time to 0.01%
VS
Min
AD817A
Typ
Max
Units
±5 V
± 15 V
0, +5 V
±5 V
± 15 V
0, +5 V
30
45
25
18
40
10
35
50
29
30
70
20
MHz
MHz
MHz
MHz
MHz
MHz
15.9
MHz
5.6
250
350
200
45
45
70
70
63
0.04
0.05
0.11
0.08
0.06
0.14
MHz
V/µs
V/µs
V/µs
ns
ns
ns
ns
dB
%
%
%
Degrees
Degrees
Degrees
±5 V
± 15 V
±5 V
± 15 V
0, +5 V
±5 V
± 15 V
±5 V
± 15 V
± 15 V
± 15 V
±5 V
0, +5 V
± 15 V
±5 V
0, +5 V
200
300
150
± 5 V to ± 15 V
INPUT OFFSET VOLTAGE
0.5
TMIN to TMAX
Offset Drift
0.1
0.1
2
3
mV
mV
µV/°C
10
INPUT BIAS CURRENT
± 5 V, ± 15 V
3.3
6.6
10
4.4
µA
µA
µA
± 5 V, ± 15 V
25
200
500
nA
nA
nA/°C
TMIN
TMAX
INPUT OFFSET CURRENT
TMIN to TMAX
Offset Current Drift
OPEN LOOP GAIN
0.08
0.1
0.3
VOUT = ± 2.5 V
RLOAD = 500 Ω
TMIN to TMAX
RLOAD = 150 Ω
VOUT = ± 10 V
RLOAD = 1 kΩ
TMIN to TMAX
VOUT = ± 7.5 V
RLOAD = 150 Ω
(50 mA Output)
±5 V
± 15 V
± 15 V
±5
± 15 V
± 15 V
2
1.5
1.5
4
3
V/mV
V/mV
V/mV
4
2.5
6
5
V/mV
V/mV
2
4
V/mV
78
86
80
100
120
100
dB
dB
dB
75
72
86
dB
dB
COMMON-MODE REJECTION
VCM = ± 2.5 V
VCM = ± 12 V
POWER SUPPLY REJECTION
VS = ± 5 V to ± 15 V
TMIN to TMAX
INPUT VOLTAGE NOISE
f = 10 kHz
± 5 V, ± 15 V
15
nV/√Hz
INPUT CURRENT NOISE
f = 10 kHz
± 5 V, ± 15 V
1.5
pA/√Hz
–2–
AD817
VS
Min
AD817A
Typ
Max
Units
±5 V
+3.8
–2.7
+13
–12
+3.8
+1.2
+4.3
–3.4
+14.3
–13.4
+4.3
+0.9
V
V
V
V
V
V
3.3
3.2
13.3
12.8
+1.5,
+3.5
50
50
30
3.8
3.6
13.7
13.4
±V
±V
±V
±V
90
V
mA
mA
mA
mA
INPUT RESISTANCE
300
kΩ
INPUT CAPACITANCE
1.5
pF
8
Ω
Parameter
Conditions
INPUT COMMON-MODE
VOLTAGE RANGE
± 15 V
0, +5 V
OUTPUT VOLTAGE SWING
RLOAD = 500 Ω
RLOAD = 150 Ω
RLOAD = 1 kΩ
RLOAD = 500 Ω
RLOAD = 500 Ω
±5 V
±5 V
± 15 V
± 15 V
0, +5 V
± 15 V
±5 V
0, +5 V
± 15 V
Output Current
Short-Circuit Current
OUTPUT RESISTANCE
POWER SUPPLY
Operating Range
Open Loop
Dual Supply
Single Supply
± 2.5
+5
±5 V
±5 V
± 15 V
± 15 V
Quiescent Current
TMIN to TMAX
TMIN to TMAX
7.0
7.0
± 18
+36
7.5
7.5
7.5
7.5
V
V
mA
mA
mA
mA
NOTES
1
Full power bandwidth = slew rate/2 π VPEAK.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS 1
2.0
MAXIMUM POWER DISSIPATION – Watts
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V
Internal Power Dissipation2
Plastic (N) . . . . . . . . . . . . . . . . . . . . . . See Derating Curves
Small Outline (R) . . . . . . . . . . . . . . . . . See Derating Curves
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . . ± VS
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . ± 6 V
Output Short Circuit Duration . . . . . . . . See Derating Curves
Storage Temperature Range N, R . . . . . . . . . –65°C to +125°C
Operating Temperature Range . . . . . . . . . . . . –40°C to +85°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . +300°C
NOTES
1
Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the
operational section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
2
Specification is for device in free air: 8-pin plastic package: θJA = 100°C/watt;
8-pin SOIC package: θJA = 160°C/watt.
8-PIN MINI-DIP PACKAGE
TJ = +150°C
1.5
1.0
8-PIN SOIC PACKAGE
0.5
0
–50 –40 –30 –20 –10 0 10 20 30 40 50 60
AMBIENT TEMPERATURE – °C
70
80 90
Maximum Power Dissipation vs. Temperature
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD817 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
–3–
WARNING!
ESD SENSITIVE DEVICE
AD817
(10.24 V for a 1 kΩ resistor). Note that since the DAC generates a positive current to ground, the voltage at the amplifier
output will be negative. A 100 Ω series resistor between the
noninverting amplifier input and ground minimizes the offset
effects of op amp input bias currents.
HIGH SPEED DAC BUFFER
The wide bandwidth and fast settling time of the AD817 make
it a very good output buffer for high speed current output D/A
converters like the AD668. As shown in Figure 38, the op amp
establishes a summing node at ground for the DAC output. The
output voltage is determined by the amplifier’s feedback resistor
C1707b–5–6/95
+15V
10µF
TO ANALOG
GROUND PLANE
0.1µF
1
VCC 24
MSB
2
REFCOM 23
3
REFIN1 22
4
REFIN2 21
1V NOMINAL
REFERENCE INPUT
10kΩ
1kΩ
5
DIGITAL
INPUTS
I OUT 20
AD668
6
R LOAD 19
7
ACOM 18
8
LCOM 17
100Ω
AD817
ANALOG GROUND PLANE
ANALOG
SUPPLY
GROUND
10µF
9
IBPO 16
10
VEE 15
11
THCOM 14
12 LSB
ANALOG
OUTPUT
0.1µF
–15V
100pF
1kΩ
+5V
VTH 13
Figure 38. High Speed DAC Buffer
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
8-Pin Plastic Mini-DIP
(N-8)
5
0.25
(6.35)
PIN 1
1
0.018±0.003
(0.46±0.08)
0.1968 (5.00)
0.1890 (4.80)
0.035±0.01
(0.89±0.25)
0.18±0.03
(4.57±0.76)
0.10
(2.54)
BSC
0.033
(0.84)
NOM
0.2440 (6.20)
0.2284 (5.80)
4
1
0.30 (7.62)
REF
0.39 (9.91) MAX
0.125
(3.18)
MIN
0.1574 (4.00)
0.1497 (3.80)
PIN 1
4
0.165±0.01
(4.19±0.25)
5
8
0.31
(7.87)
0.0688 (1.75)
0.0532 (1.35)
0.0098 (0.25)
0.0040 (0.10)
0.011±0.003
(0.28±0.08)
0.0500
(1.27)
BSC
15 °
0°
SEATING
PLANE
–12–
0.0196 (0.50)
x 45 °
0.0099 (0.25)
0.0192 (0.49)
0.0138 (0.35)
0.0098 (0.25)
0.0075 (0.19)
8°
0°
0.0500 (1.27)
0.0160 (0.41)
PRINTED IN U.S.A.
8
8-Pin SOIC
(SO-8)
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising