AD707AR AD [Analog Devices], AD707AR Datasheet

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AD707AR

Manufacturer Part Number
AD707AR
Description
Ultralow Drift Op Amp
Manufacturer
AD [Analog Devices]
Datasheet

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a
PRODUCT DESCRIPTION
The AD707 is a low cost, high precision op amp with state-of-
the-art performance that makes it ideal for a wide range of
precision applications. The offset voltage spec of less than 15 V
is the best available in a bipolar op amp, and maximum input
offset current is 1.0 nA. The top grade is the first bipolar
monolithic op amp to offer a maximum offset voltage drift of
0.1 V/ C, and offset current drift and input bias current drift
are both specified at 25 pA/ C maximum.
The AD707’s open-loop gain is 8 V/ V minimum over the full
voltage noise is 350 nV p-p (0.1 Hz to 10 Hz). CMRR and
PSRR are 130 dB and 120 dB minimum, respectively.
The AD707 is available in versions specified over commercial,
industrial and military temperature ranges. It is offered in 8-pin
plastic mini-DIP, small outline (SOIC), hermetic cerdip and
hermetic TO-99 metal can packages. Chips, MIL-STD-883B,
Rev. C, and tape & reel parts are also available.
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
10 V output range when driving a 1 k load. Maximum input
FEATURES
Very High DC Precision
15 V max Offset Voltage
0.1 V/ C max Offset Voltage Drift
0.35 V p-p max Voltage Noise (0.1 Hz to 10 Hz}
8 V/ V min Open-Loop Gain
130 dB min CMRR
120 dB min PSRR
1 nA max Input Bias Current
AC Performance
0.3 V/ s Slew Rate
0.9 MHz Closed-Loop Bandwidth
Dual Version: AD708
Available in Tape and Reel in Accordance with
EIA-481A Standard
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
APPLICATION HIGHLIGHTS
1. The AD707’s 13 V/ V typical open-loop gain and 140 dB
2. The precision of the AD707 makes tighter error budgets
3. The low offset voltage drift and low noise of the AD707 allow
4. The AD707 can be used where chopper amplifiers are
5. The AD707 is an improved pin-for-pin replacement for the
NULL
typical common-mode rejection ratio make it ideal for
precision instrumentation applications.
possible at a lower cost.
the designer to amplify very small signals without sacrificing
overall system performance.
required, but without the inherent noise and application
problems.
LT1001.
–V
+IN
–IN
Cerdip (Q) Packages
S
Plastic (N) and
1
2
3
4
NC = NO CONNECT
AD707
CONNECTION DIAGRAMS
–IN
NULL
+IN
8
7
6
5
Ultralow Drift Op Amp
TO-99 (H) Package
NOTE: PIN 4 CONNECTED
2
NULL
+V
OUTPUT
NC
NC = NO CONNECT
1
3
S
AD707
TO CASE
NULL
–V
8
4
S
NULL
–V
–IN
+IN
S
7
5
SOIC (R) Package
+V
NC
6
S
© Analog Devices, Inc., 1995
OUTPUT
NC = NO CONNECT
1
4
AD707
AD707
Fax: 617/326-8703
8
5
NULL
+V
OUTPUT
NC
S

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AD707AR Summary of contents

Page 1

FEATURES Very High DC Precision 15 V max Offset Voltage 0 max Offset Voltage Drift 0.35 V p-p max Voltage Noise (0 Hz min Open-Loop Gain 130 dB min CMRR 120 ...

Page 2

AD707–SPECIFICATIONS INPUT OFFSET VOLTAGE Initial vs. Temperature Long-Term Stability Adjustment Range INPUT BIAS CURRENT Average Drift OFFSET CURRENT Average Drift INPUT VOLTAGE NOISE INPUT CURRENT NOISE COMMON-MODE REJECTION RATIO OPEN-LOOP GAIN POWER SUPPLY REJECTION RATIO FREQUENCY RESPONSE Closed-Loop Bandwidth Slew ...

Page 3

... Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. REV Model V S AD707AH and –V AD707AQ S S AD707AR AD707AR-REEL AD707AR-REEL7 – +85 C AD707BQ AD707JN AD707JR AD707JR-REEL = 110 C/Watt; JA AD707JR-REEL7 = JA AD707KN AD707KR AD707KR-REEL AD707KR-REEL7 +70 C METALIZATION PHOTOGRAPH Dimensions shown in inches and (mm) ...

Page 4

AD707–Typical Characteristics +V S –0.5 +V –1.0 –1.5 +1.5 +1.0 –V +0.5 – SUPPLY VOLTAGE – V Figure 1. Input Common-Mode Range vs. Supply Voltage DUAL-IN-LINE PACKAGE PLASTIC (N) or CERDIP ...

Page 5

10V OUT –60 –40 – 100 120 140 TEMPERATURE – C Figure 10. Open-Loop Gain vs. Temperature 160 140 120 ...

Page 6

AD707 OFFSET NULLING The input offset voltage of the AD707 is the lowest available in a bipolar op amp, but if additional nulling is required, the circuit shown in Figure 19 offers a null range of 200 V. For wider ...

Page 7

SETTLING TIME Figure 22 shows the AD707 settling to within its final value for output step in less than 100 s (in the test con- figuration shown in Figure 23). To achieve settling ...

Page 8

AD707 PRECISION CURRENT TRANSMITTER The AD707’s excellent dc performance, especially the low offset voltage, low offset voltage drift and high CMRR, makes it possible to make a high precision voltage-controlled current transmitter using a variation of the Howland Current Source ...

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