FEATURES
Enhanced Replacement for LF411 and TL081
AC PERFORMANCE
Settles to 0.01% in 1.0 s
16 V/s min Slew Rate (AD711J)
3 MHz min Unity Gain Bandwidth (AD711J)
DC PERFORMANCE
0.25 mV max Offset Voltage: (AD711C)
3 V/C max Drift: (AD711C)
200 V/mV min Open-Loop Gain (AD711K)
4 V p-p max Noise, 0.1 Hz to 10 Hz (AD711C)
Available in Plastic Mini-DIP, Plastic SO, Hermetic
Cerdip, and Hermetic Metal Can Packages
MIL-STD-883B Parts Available
Available in Tape and Reel in Accordance with
EIA-481A Standard
Surface Mount (SOIC)
Dual Version: AD712
PRODUCT DESCRIPTION
The AD711 is a high speed, precision monolithic operational
amplifier offering high performance at very modest prices. Its
very low offset voltage and offset voltage drift are the results of
advanced laser wafer trimming technology. These performance
benefits allow the user to easily upgrade existing designs that use
older precision BiFETs and, in many cases, bipolar op amps.
The superior ac and dc performance of this op amp makes it
suitable for active filter applications. With a slew rate of 16 V/µs
and a settling time of 1 µs to ±0.01%, the AD711 is ideal as a
buffer for 12-bit D/A and A/D Converters and as a high-speed
integrator. The settling time is unmatched by any similar IC
amplifier.
The combination of excellent noise performance and low input
current also make the AD711 useful for photo diode preamps.
Common-mode rejection of 88 dB and open loop gain of
400 V/mV ensure 12-bit performance even in high-speed unity
gain buffer circuits.
The AD711 is pinned out in a standard op amp configuration
and is available in seven performance grades. The AD711J and
AD711K are rated over the commercial temperature range of
0°C to 70°C. The AD711A, AD711B and AD711C are rated
over the industrial temperature range of –40°C to +85°C. The
AD711S and AD711T are rated over the military temperature
range of –40°C to +125°C and are available processed to MILSTD-883B, Rev. C.
High Speed, BiFET Op Amp
AD711
CONNECTION DIAGRAMS
OFFSET
NULL
INVERTING
INPUT
NON
INVERTING
INPUT
NOTE
PIN 4 CONNECTED TO CASE
NONINVERTING
Extended reliability PLUS screening is available, specified over
the commercial and industrial temperature ranges. PLUS
screening includes 168 hour burn-in, as well as other environmental and physical tests.
The AD711 is available in an 8-pin plastic mini-DIP, small
outline, cerdip, TO-99 metal can, or in chip form.
PRODUCT HIGHLIGHTS
1. The AD711 offers excellent overall performance at very
competitive prices.
2. Analog Devices’ advanced processing technology and 100%
testing guarantee a low input offset voltage (0.25 mV max,
C grade, 2 mV max, J grade). Input offset voltage is specified
in the warmed-up condition. Analog Devices’ laser wafer
drift trimming process reduces input offset voltage drifts to
3 µV/°C
max on the AD711C.
3. Along with precision dc performance, the AD711 offers
excellent dynamic response. It settles to ±0.01% in 1 µs and
has a 100% tested minimum slew rate of 16 V/µs. Thus this
device is ideal for applications such as DAC and ADC
buffers which require a combination of superior ac and dc
performance.
4. The AD711 has a guaranteed and tested maximum voltage
noise of 4 µV p-p, 0.1 to 10 Hz (AD711C).
5. Analog Devices’ well-matched, ion-implanted JFETs ensure
a guaranteed input bias current (at either input) of 25 pA
max (AD711C) and an input offset current of 10 pA max
(AD711C). Both input bias current and input offset current
are guaranteed in the warmed-up condition.
NC
AD711
–V
S
NC = NO CONNECT
OFFSET
1
NULL
INVERTING
2
INPUT
3
INPUT
–V
4
S
NC = NO CONNECT
+V
S
OUTPUT
OFFSET
NULL
AD711
10k
VOS TRIM
8
NC
+V
7
S
6
OUTPUT
OFFSET
5
NULL
–15V
REV. B
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
vs. Temp720/20/2051025µV/°C
vs. Supply76958010086110dB
T
MIN
to T
MAX
76/76/768086dB
Long-Term Stability151515µV/Month
INPUT BIAS CURRENT
2
VCM = 0 V155015501525pA
V
= 0 V @ T
CM
MAX
1.1/3.2/511.1/3.2/511.6nA
VCM = ±10 V20100201002050pA
INPUT OFFSET CURRENT
V
= 0 V1025525510pA
CM
VCM = 0 V @ T
MAX
0.6/1.6/260.6/1.6/260.65nA
FREQUENCY RESPONSE
Small Signal Bandwidth3.04.03.44.03.44.0MHz
Full Power Response200200200kHz
Slew Rate162018201820V/µs
Settling Time to 0.01%1.01.21.01.21.01.2µs
Total Harmonic Distortion0.00030.00030.0003%
INPUT IMPEDANCE
Differential3 × 10
12
储5.53 × 1012储5.53 × 1012储5.5Ω储pF
Common Mode3 × 1012储5.53 × 1012储5.53 × 1012储5.5Ω储pF
Input Offset Voltage specifications are guaranteed after 5 minutes of operation at TA = 25°C.
2
Bias Current specifications are guaranteed maximum at either input after 5 minutes of operation at TA = 25°C. For higher temperatures, the current doubles every 10°C.
3
Defined as voltage between inputs, such that neither exceeds ± 10 V from ground.
4
Typically exceeding –14.1 V negative common-mode voltage on either input results in an output phase reversal.
Lead Temperature Range (Soldering 60 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.
For supply voltages less than ± 18 V, the absolute maximum input voltage is equal
to the supply voltage.
ORDERING GUIDE
TemperaturePackagePackage
ModelRangeDescriptionOption*
*AD711AH–40°C to +85°C8-Pin Metal CanH-08A
AD711AQ–40°C to +85°C8-Pin Ceramic DIPQ-8
*AD711BQ–40°C to +85°C8-Pin Ceramic DIPQ-8
*AD711CH–40°C to +85°C8-Pin Metal CanH-08A
AD711JN0°C to 70°C8-Pin Plastic DIPN-8
AD711JR0°C to 70°C8-Pin Plastic SOICR-8
AD711JR-REEL0°C to 70°C8-Pin Plastic SOICR-8
AD711JR-REEL70°C to 70°C8-Pin Plastic SOICR-8
AD711KN0°C to 70°C8-Pin Plastic DIPN-8
AD711KR0°C to 70°C8-Pin Plastic SOICR-8
AD711KR-REEL0°C to 70°C8-Pin Plastic SOICR-8
AD711KR-REEL7 0°C to 70°C8-Pin Plastic SOICR-8
*AD711SQ/883B–55°C to +125°C8-Pin Ceramic DIPQ-8
*AD711TQ/883B–55°C to +125°C8-Pin Ceramic DIPQ-8
*Not for new design, obsolete April 2002
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 AD711 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.
REV. B
–3–
AD711–Typical Performance Characteristics
20
15
10
= 2k
R
L
25C
5
INPUT VOLTAGE SWING – Volts
0
05
SUPPLY VOLTAGE – Volts
10
1520
TPC 1. Input Voltage Swing vs.
Supply Voltage
2.75
2.50
2.25
20
15
10
5
OUTPUT VOLTAGE SWING – Volts
0
05
SUPPLY VOLTAGE – Volts
+V
OUT
= 2k
R
L
25C
–V
OUT
10
1520
TPC 2. Output Voltage Swing vs.
Supply Voltage
–6
10
–7
10
= 0) – Amps
–8
10
CM
–9
10
30
25
20
15V SUPPLIES
15
10
5
OUTPUT VOLTAGE SWING – Volts p-p
0
10
1001k10k
LOAD RESISTANCE –
TPC 3. Output Voltage Swing vs.
Load Resistance
100
A
= 1
VCL
10
1
2.00
QUIESCENT CURRENT – mA
1.75
05
SUPPLY VOLTAGE – Volts
101520
TPC 4. Quiescent Current vs. Supply Voltage
100
VS = 15V
25C
75
50
MAX J GRADE LIMIT
25
INPUT BIAS CURRENT – pA
0
–10
–50 510
COMMON MODE VOLTAGE – Volts
–10
10
–11
10
INPUT BIAS CURRENT (V
–12
10
–60 –40 –20 0 20 40 60 80 100 120 140
TEMPERATURE – C
TPC 5. Input Bias Current vs. Temperature
26
24
22
20
18
–OUTPUT CURRENT
16
14
12
SHORT CIRCUIT CURRENT LIMIT – mA
10
–60
–40 –20 0 20 40 60 80 100 120 140
AMBIENT TEMPERATURE – C
+OUTPUT CURRENT
0.01
OUTPUT IMPEDANCE –
0.01
1k
10k100k1M10M
FREQUENCY – Hz
TPC 6. Output Impedance vs. Frequency
5.0
4.5
4.0
3.5
UNITY GAIN BANDWIDTHT – MHz
3.0
–60
–40 –20 0 20 40 60 80 100 120 140
TEMPERATURE – C
TPC 7. Input Bias Current vs. Common Mode Voltage
TPC 8. Short Circuit Current Limit
vs. Temperature
–4–
TPC 9. Unity Gain Bandwidth vs.
Temperature
REV. B
AD711
100
PHASE
OPEN LOOP GAIN – dB
80
60
GAIN
1001k10k 100k 1M
FREQUENCY – Hz
–20
40
20
0
10
RL = 2k
C = 100pF
TPC 10. Open-Loop Gain and
Phase Margin vs. Frequency
100
80
60
CMR – dB
40
0
1020100
1k10k100k1M
FREQUENCY – Hz
VS = 15V
= 1V p-p
V
CM
C
25
10M
100
80
60
40
20
0
–20
PHASE MARGIN – Degrees
125
R
= 2k
L
25C
120
115
110
105
OPEN-LOOP GAIN – dB
100
95
0
5101520
SUPPLY VOLTAGE – Volts
TPC 11. Open-Loop Gain vs.
Supply Voltage
30
25
20
15
10
OUTPUT VOLTAGE – Volts p-p
5
0
INPUT FREQUENCY – Hz
1M
RL = 2k
C
25
= 15V
V
S
110
100
80
–SUPPLY
60
40
VS = 15 SUPPLIES
20
WITH 1V p-p SINE
POWER SUPPLY REJECTION – dB
0
C
WAVE 25
10
SUPPLY MODULATION FREQUENCY – Hz
+SUPPLY
1001k10k10k1
TPC 12. Power Supply Rejection
vs. Frequency
2
8
6
4
2
0
–2
–4
–6
OUTPUT SWING FRIM 0V TO Volts
–8
10M100k
–10
0.5
1% 0.1% 0.01%
ERROR 1% 0.1% 0.01%
0.6
0.7
SETTLING TIME – s
0.8
0.9
1.0
TPC 13. Common Mode Rejection
vs. Frequency
–70
3V RMS
R
100
= 2k
L
C
= 100pF
L
1k10k100k
FREQUENCY – Hz
–80
–90
–100
THD – dB
–110
–120
–130
TPC 16. Total Harmonic Distortion vs. Frequency
TPC 14. Large Signal Frequency
Response
1k
100
INPUT NOISE VOLTAGE – nV/ Hz
1
11010
1001k10k100k
FREQUENCY – Hz
TPC 17. Input Noise Voltage
Spectral Density
TPC 15. Output Swing and Error
vs. Settling Time
25
20
15
10
SLEW RATE – Vs
5
0
0
100 200 300 400
INPUT ERROR SIGNAL – mV
(AT SUMMING JUNCTION)
500 600 700 800 900
TPC 18. Slew Rate vs. Input
Error Signal
REV. B
–5–
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