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

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

CONNECTION DIAGRAMS

TO-99 (H) Package

NULL

		8
NULL	1	7	+VS
–IN 2			6 OUTPUT
+IN	3	AD707	NC
		5
		4

AC Performance

0.3V/ms Slew Rate

0.9MHz 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-of- the-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.

–VS

NC = NO CONNECT

NOTE: PIN 4 CONNECTED

TO CASE

Plastic (N) and

Cerdip (Q) Packages

SOIC (R) Package

NULL	1		8	NULL	NULL	1	8	NULL
–IN	2		7	+VS	–IN			+VS
+IN	3		6	OUTPUT	+IN			OUTPUT
–VS	4	AD707	5	NC	–VS	4	AD707 5	NC
	NC = NO CONNECT					NC = NO CONNECT

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.

© Analog Devices, Inc., 1995

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

AD707–SPECIFICATIONS (@ +258C and 615 V, unless otherwise noted)

		AD707J/A			AD707K/B
	Conditions	Min	Typ	Max	Min	Typ	Max	Units
INPUT OFFSET VOLTAGE								mV
Initial			30	90		10	25
vs. Temperature			0.3	1.0		0.1	0.3	mV/°C
	TMIN to TMAX		50	100		15	45	mV
Long-Term Stability			0.3			0.3		mV/month
Adjustment Range	R2 = 20 kW (Figure 19)		± 4			± 4		mV
INPUT BIAS CURRENT			1.0	2.5		0.5	2.0	nA
	TMIN to TMAX		2.0	4.0		1.5	4.0	nA
Average Drift			15	40		15	40/40/40	pA/°C
OFFSET CURRENT	VCM = 0 V		0.5	2.0		0.3	1.5	nA
	TMIN to TMAX		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	mV p-p
	f = 10 Hz		10.3	28		10.3	18	nV/Ö	Hz
	f = 100 Hz		10.0	13.0		10.0	12	nV/Ö	Hz
	f = 1 kHz		9.6	11.0		9.6	11.0	nV/Ö	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/Ö	Hz
	f = 100 Hz		0.14	0.27		0.14	0.23	pA/Ö	Hz
	f = 1 kHz		0.12	0.18		0.12	0.17	pA/Ö	Hz
COMMON-MODE	VCM = ± 13 V
REJECTION RATIO		120	140		130	140		dB
	TMIN to TMAX	120	140		120	140		dB
OPEN-LOOP GAIN	VO = ± 10 V
	RLOAD ³ 2 kW	3	13		5	13		V/mV
	TMIN to TMAX	3	13		3	13		V/mV
POWER SUPPLY	VS = ± 3 V to ± 18 V
REJECTION RATIO		110	130		115	130		dB
	TMIN to TMAX	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/ms
INPUT RESISTANCE								MW
Differential		24	100		45	200
Common Mode			200			300		GW
OUTPUT CHARACTERISTICS	RLOAD ³ 10 kW							± V
Voltage		13.5	14		13.5	14
	RLOAD ³ 2 kW	12.5	13.0		12.5	13.0		± V
	RLOAD ³ 1 kW	12.0	12.5		12.0	12.5		± V
	RLOAD ³ 2 kW				12.0			± V
	TMIN to TMAX	12.0	13.0			13.0
OPEN-LOOP OUTPUT								W
RESISTANCE			60			60
POWER SUPPLY
Current, Quiescent	VS = ± 15 V		2.5	3		2.5	3	mA
Power Consumption, No Load			75	90		75	90	mW
	VS = ± 3 V		7.5	9.0		7.5	9.0	mW

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.

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REV. B

AD707

ABSOLUTE MAXIMUM RATINGS1

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±22 V Internal Power Dissipation2 . . . . . . . . . . . . . . . . . . . . 500 mW

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS Output Short Circuit Duration . . . . . . . . . . . . . . . . Indefinite

Differential Input Voltage . . . . . . . . . . . . . . . . . +VS and –VS 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

1Stresses 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.

28-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.

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

	METALIZATION PHOTOGRAPH
	Dimensions shown in inches and (mm).
	Contact factory for latest dimensions.
NULL	+VS
8	7

6 VOUT

0.059

(1.51)

4 –VS

1	2	3
NULL	–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.

WARNING!

ESD SENSITIVE DEVICE

REV. B

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