Analog Devices AD707KR-REEL7, AD707KR-REEL, AD707KR, AD707KN, AD707JR-REEL7 Datasheet

AD707

7

62

8

1

3

4

5

NULL

NULL

–IN

+IN

–V

S

+V

S

OUTPUT

NC

NC = NO CONNECT

NOTE: PIN 4 CONNECTED

TO CASE

a

Ultralow Drift Op Amp

AD707

FEATURES
Very High DC Precision
15 mV max Offset Voltage

0.1 mV/8C max Offset Voltage Drift

0.35 mV p-p max Voltage Noise (0.1 Hz to 10 Hz}
8 V/mV min Open-Loop Gain
130 dB min CMRR
120 dB min PSRR
1 nA max Input Bias Current

AC Performance

0.3 V/ms Slew Rate

0.9 MHz Closed-Loop Bandwidth
Dual Version: AD708
Available in Tape and Reel in Accordance with

EIA-481A Standard

PRODUCT DESCRIPTION

The AD707 is a low cost, high precision op amp with state-of­the-art performance that makes it ideal for a wide range of
precision applications. The offset voltage spec of less than 15 µV
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 µV/°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/µV minimum over the full
±10 V output range when driving a 1 kΩ load. Maximum input
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.

CONNECTION DIAGRAMS

TO-99 (H) Package

Plastic (N) and
Cerdip (Q) Packages SOIC (R) Package

NULL

1

–IN

2

+IN

3

–V

4

S

NC = NO CONNECT

AD707

8
7
6
5

NULL
+V

S

OUTPUT
NC

NULL

–IN
+IN

–V

S

NC = NO CONNECT

1

4

AD707

NULL

8

+V

S

OUTPUT
NC

5

APPLICATION HIGHLIGHTS

1. The AD707’s 13 V/µV typical open-loop gain and 140 dB

typical common-mode rejection ratio make it ideal for
precision instrumentation applications.

2. The precision of the AD707 makes tighter error budgets
possible at a lower cost.

3. The low offset voltage drift and low noise of the AD707 allow
the designer to amplify very small signals without sacrificing
overall system performance.

4. The AD707 can be used where chopper amplifiers are
required, but without the inherent noise and application
problems.

5. The AD707 is an improved pin-for-pin replacement for the
LT1001.

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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] Fax: [phone]

© Analog Devices, Inc., 1995

AD707–SPECIFICATIONS

(@ +258C and 615 V, unless otherwise noted)

AD707J/A AD707K/B

Conditions Min Typ Max Min Typ Max Units

INPUT OFFSET VOLTAGE

Initial 30 90 10 25 µV
vs. Temperature 0.3 1.0 0.1 0.3 µV/°C

to T

T

MIN

MAX

50 100 15 45 µV
Long-Term Stability 0.3 0.3 µV/month
Adjustment Range R2 = 20 kΩ (Figure 19) ± 4 ±4mV

INPUT BIAS CURRENT 1.0 2.5 0.5 2.0 nA

T

MIN

to T

MAX

2.0 4.0 1.5 4.0 nA

Average Drift 15 40 15 40/40/40 pA/°C

OFFSET CURRENT V

= 0 V 0.5 2.0 0.3 1.5 nA

CM

to T

T

MIN

MAX

2.0 4.0 1.0 2.0 nA

Average Drift 2 40 1 25/25/35 pA/°C

INPUT VOLTAGE NOISE 0.1 Hz to 10 Hz 0.23 0.6 0.23 0.6 µV p-p

f = 10 Hz 10.3 28 10.3 18 nV/√
f = 100 Hz 10.0 13.0 10.0 12 nV/√

Hz
Hz

f = 1 kHz 9.6 11.0 9.6 11.0 nV/√Hz

INPUT CURRENT NOISE 0.1 Hz to 10 Hz 14 35 14 30 pA p-p

f = 10 Hz 0.32 0.9 0.32 0.8 pA/√
f = 100 Hz 0.14 0.27 0.14 0.23 pA/√

Hz
Hz

f = 1 kHz 0.12 0.18 0.12 0.17 pA/√Hz

COMMON-MODE

REJECTION RATIO V

OPEN-LOOP GAIN V

= ±13 V 120 140 130 140 dB

CM

T

to T

R
T

MIN

O
LOAD
MIN

MAX

= ±10 V

≥ 2 kΩ 3 13 5 13 V/µV

to T

MAX

120 140 120 140 dB

3 13 3 13 V/µV

POWER SUPPLY

REJECTION RATIO V

= ±3 V to ± 18 V 110 130 115 130 dB

S

T

MIN

to T

MAX

110 130 110 130 dB

FREQUENCY RESPONSE

Closed-Loop Bandwidth 0.4 0.9 0.4 0.9 MHz
Slew Rate 0.12 0.3 0.12 0.3 V/µs

INPUT RESISTANCE

Differential 24 100 45 200 MΩ
Common Mode 200 300 GΩ

OUTPUT CHARACTERISTICS

Voltage R

≥ 10 kΩ 13.5 14 13.5 14 ±V

LOAD

≥ 2 kΩ 12.5 13.0 12.5 13.0 ±V

R

LOAD

≥ 1 kΩ 12.0 12.5 12.0 12.5 ±V

R

LOAD

≥ 2 kΩ

R

LOAD

T

MIN

to T

MAX

12.0 13.0 12.0 13.0 ±V

OPEN-LOOP OUTPUT

RESISTANCE 60 60 Ω

POWER SUPPLY

Current, Quiescent 2.5 3 2.5 3 mA
Power Consumption, No Load V

NOTES
All min and max specifications are guaranteed. Specifications in boldface are tested on all production units at final electrical test. Results from those tests are used to
calculate outgoing quality levels.

Specifications subject to change without notice.

= ±15 V 75 90 75 90 mW

S

V

= ±3 V 7.5 9.0 7.5 9.0 mW

S

–2–

REV. B

AD707

ABSOLUTE MAXIMUM RATINGS

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±22 V

Internal Power Dissipation

2

. . . . . . . . . . . . . . . . . . . . 500 mW

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±V

1

S

Output Short Circuit Duration . . . . . . . . . . . . . . . . Indefinite

Differential Input Voltage . . . . . . . . . . . . . . . . . +V

and –V

S

S

Storage Temperature Range (Q, H) . . . . . . –65°C to +150°C

Storage Temperature Range (N, R) . . . . . . . –65°C to +125°C

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. Exposure to absolute maximum rating condi­tions for extended periods may affect device reliability.

2

8-pin plastic package: θJA = 165°C/Watt; 8-pin cerdip package: θJA = 110°C/Watt;
8-pin small outline package: θJA = 155°C/Watt; 8-pin header package: θJA =
200°C/Watt.

METALIZATION PHOTOGRAPH

Dimensions shown in inches and (mm).

Contact factory for latest dimensions.

NULL

8

ORDERING GUIDE

Temperature Package Package

Model Range Description Option

AD707AH –40°C to +85°C 8-Pin Metal Can H-08A
AD707AQ –40°C to +85°C 8-Pin Ceramic DIP Q-8
AD707AR –40°C to +85°C 8-Pin Plastic SOIC SO-8
AD707AR-REEL –40°C to +85°C 8-Pin Plastic SOIC SO-8
AD707AR-REEL7 –40°C to +85°C 8-Pin Plastic SOIC SO-8
AD707BQ –40°C to +85°C 8-Pin Ceramic DIP Q-8
AD707JN 0°C to +70°C 8-Pin Plastic DIP N-8
AD707JR 0°C to +70°C 8-Pin Plastic SOIC SO-8
AD707JR-REEL 0°C to +70°C 8-Pin Plastic SOIC SO-8
AD707JR-REEL7 0°C to +70°C 8-Pin Plastic SOIC SO-8
AD707KN 0°C to +70°C 8-Pin Plastic DIP N-8
AD707KR 0°C to +70°C 8-Pin Plastic SOIC SO-8
AD707KR-REEL 0°C to +70°C 8-Pin Plastic SOIC SO-8
AD707KR-REEL7 0°C to +70°C 8-Pin Plastic SOIC SO-8

+V

S

7

0.059
(1.51)

3

1

NULL

2

+IN

–IN

0.110 (2.79)

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 AD707 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.

6
V

OUT

4
–V

S

WARNING!

ESD SENSITIVE DEVICE

REV. B –3–