Dual, Low Power, Low Noise, Low Bias Current

Precision Rail-to-Rail Output Op Amp

Preliminary Technical Data

AD8622

Rev. PrA

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FEATURES

Very low offset voltage:

50 μV B-grade maximum

100 μV A-grade maximum

Low Bias Current: 200 pA

200 μA supply current

Rail-to-rail output swing

Low input offset drift: 0.8 μV/°C maximum

Low voltage noise at low power 12 nV/√Hz

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

±2.5 V to ±18 V operation

APPLICATIONS

Portable Precision instrumentation

Process Control Inputs

Laser diode control loops

Strain gage amplifiers

Medical instrumentation

Thermocouple amplifiers

PIN CONFIGURATIONS

Figure 1. 8-Lead SOIC or MSOP

GENERAL DESCRIPTION

The AD8622 is a dual low power (330 μA max over temperature and

supply), precision, rail-to-rail operational amplifiers.

cancellation circuits to guarantee low bias current over temperature. ADI’s

proprietary iPolar process is an advanced bipolar technology implementing

vertical junction isolation with lateral trench isolation, allowing for low

noise performance amplifiers in smaller die size at faster speed and lower

power. These operational amplifiers offer ultralow offset, drift, and voltage

noise combined with very low input bias currents over the full operating

temperature range. Operation is fully specified from ±5 V to ±15 V.

With typical offset voltage of only 10 μV, offset drift of 0.2 μV/°C, and noise

of only TBD μV p-p (0.1 Hz to 10 Hz), these is perfectly suited for

applications where large error sources cannot be tolerated. Many systems

can take advantage of the low bias current, low noise, dc precision, and rail-

to-rail output swing provided by the devices to maximize SNR and dynamic

range for low power operation.

OUTA

1

-INA

2

+INA

3

V-

4

V+

8

OUTB

7

-INB

6

+INB

5

AD8622

TOP VIEW

OUTA

1

-INA

2

+INA

3

V-

4

V+

8

OUTB

7

-INB

6

+INB

5

AD8622

TOP VIEW