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.