1 Features

1• Low Offset Voltage: ±100 μV (Maximum)

• Low Offset Voltage Drift: ±2.5 μV/°C (Maximum)

• Low Noise: 5.5 nV/√Hz at 1 kHz

• High Common-Mode Rejection: 120 dB

(Minimum)

• Low Bias Current: ±5 pA (Typical)

• Rail-to-Rail Input and Output

• Wide Bandwidth: 10-MHz GBW

• High Slew Rate: 20 V/μs

• Low Quiescent Current: 1 mA per Amplifier

(Typical)

• Wide Supply: ±2.25 V to ±18 V, +4.5 V to +36 V

• EMI- and RFI-Filtered Inputs

• Differential Input Voltage Range to Supply Rail

• High Capacitive Load Drive Capability: 1 nF

• Industry Standard Packages:

– Single in SOIC-8, SOT-5, and VSSOP-8

– Dual in SOIC-8 and VSSOP-8

– Quad in SOIC-14 and TSSOP-14

2 Applications

• Multiplexed Data-Acquisition Systems

• Test and Measurement Equipment

• High-Resolution ADC Driver Amplifiers

• SAR ADC Reference Buffers

• Programmable Logic Controllers

• High-Side and Low-Side Current Sensing

• High Precision Comparators

3 Description

The OPAx197 family (OPA197, OPA2197, and

OPA4197) is a new generation of 36-V operational

amplifiers.

These devices offer outstanding dc precision and ac

performance, including rail-to-rail input/output, low

offset (±25 μV, typical), low offset drift (±0.25 μV/°C,

typ), and 10-MHz bandwidth.

Unique features such as differential input-voltage

range to the supply rail, high output current (±65 mA),

high capacitive load drive of up to 1 nF, and high

slew rate (20 V/μs) make the OPA197 a robust, highperformance

operational amplifier for high-voltage,

industrial applications.

The OPA197 family of op amps is available in

standard packages and is specified from –40°C to

+125°C.