Low Power, Precision

Rail-to-Rail Output Op Amp

Data Sheet

AD8622/AD8624

Rev. D

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FEATURES

Very low offset voltage

125 μV maximum

Supply current: 215 μA/amp typical

Input bias current: 200 pA maximum

Low input offset voltage drift: 1.2 μV/°C maximum

Very low voltage noise: 11 nV/√Hz

Operating temperature: −40°C to +125°C

Rail-to-rail output swing

Unity gain stable

±2.5 V to ±15 V operation

APPLICATIONS

Portable precision instrumentation

Laser diode control loops

Strain gage amplifiers

Medical instrumentation

Thermocouple amplifiers

GENERAL DESCRIPTION

The AD8622/AD8624 are dual and quad precision rail-to-rail

output operational amplifiers with low supply currents of only

350 μA/amplifier maximum over temperature and supply voltages.

The AD8622/AD8624 also has an input bias current cancellation

circuitry that provides a very low input bias current over the full

operating temperature.

With a typical offset voltage of only 10 μV, offset drift of 0.5 μV/°C,

and noise of only 0.2 μV p-p (0.1 Hz to 10 Hz), they are perfectly

suited for applications where large error sources cannot be

tolerated. Many systems can take advantage of the low noise,

dc precision, and rail-to-rail output swing provided by the

AD8622/AD8624 to maximize the signal-to-noise ratio and

dynamic range for low power operation. The AD8622/AD8624

are specified for the extended industrial temperature range of

−40°C to +125°C. The AD8622 is available in lead-free 8-lead

SOIC and MSOP packages, while the AD8624 is available in

lead-free 14-lead TSSOP and 16-lead LFCSP packages.

PIN CONFIGURATIONS

OUT A 1

–IN A 2

+IN A 3

V–

4

V+

8

OUT B

7

–IN B

6

+IN B

5

AD8622

TOP VIEW

(Not to Scale)

Figure 1. 8-Lead Narrow-Body SOIC

OUT A 1

–IN A

2

+IN A 3

V–

4

V+

8

OUT B

7

–IN B

6

+IN B

5

AD8622

TOP VIEW

(Not to Scale)

Figure 2. 8-Lead MSOP

AD8624

1

2

3

4

5

6

7

14

13

12

11

10

9

8

TOP VIEW

(Not to Scale)

OUT A

OUT D

–IN D

+IN D

V–

+IN C

–IN C

OUT C

–IN A

+IN A

V+

+IN B

–IN B

OUT B

Figure 3. 14-Lead TSSOP

NOTES

1. NC = NO CONNECT.

2. IT IS RECOMMENDED THAT THE EXPOSED

PAD BE CONNECTED TO V–.

12

11

10

1

3

4

–IN D

+IN D

V–

9

+IN C

–IN A

V+

2

+IN A

+IN B

TOP VIEW

(Not to Scale)

AD8624

Figure 4. 16-Lead LFCSP

Table 1. Low Power Op Amps

Supply

40 V

36 V

12 V to 18 V

6 V

Single

OP97

OP777

AD8663

OP1177

Dual

OP297

OP727

AD8667

ADA4692-2

OP2177

Quad

OP497

OP747

AD8669

ADA4692-4

OP4177