INA122UA/2K5

Overview

The INA122UA/2K5 is a single-supply, micro-power instrumentation amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 2.2 V to 36 V and consumes only 60 µA of operating current. The device features a 120 kHz three-decibel bandwidth and a slew rate of 160 mV/µs. Key electrical specifications include an input bias current of 25 nA, an input offset voltage of 500 µV, and a common-mode rejection ratio of 83 dB. It is housed in an 8-SOIC surface-mount package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Micro-power operation with 60 µA supply current for battery-constrained applications
• Single-supply capability supporting low-voltage systems from 2.2 V
• High precision with low input offset voltage and bias current

Applications

• Battery-powered sensor signal conditioning
• Low-power data acquisition systems
• Industrial process control instrumentation

Procurement Notes

Verify the specific suffix /2K5 indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status matches current manufacturing standards. Ensure the SOIC-8 footprint aligns with PCB layout requirements. Cross-reference the manufacturer part number with official Texas Instruments documentation to avoid counterfeit components.

Selection Notes

Select this component for designs requiring minimal quiescent current alongside adequate bandwidth. Compare against higher-speed variants if slew rate limitations affect dynamic signals. Evaluate thermal performance within the specified operating temperature range. Consider gain configuration resistor requirements for target application accuracy.

Part Context

This device belongs to the INA122 family of instrumentation amplifiers designed for low-power applications. It shares architectural similarities with other members like the INA126 but offers optimized power consumption. The series provides a balance between precision and energy efficiency for portable electronic devices.

Replacement Considerations

INA122UA: Standard tube packaging variant without the reel suffix.