INA122U

Overview

The INA122U 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 draws a typical operating current of 60 µA. The device features a 3 dB bandwidth of 120 kHz and a slew rate of 160 mV/µs. Key electrical specifications include a common-mode rejection ratio (CMRR) of 83 dB, an input bias current of 25 nA, and an input offset voltage of 500 µV. It is housed in an 8-SOIC surface-mount package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Micro-power operation designed for battery-powered applications
• Single-supply capability simplifies system design
• High common-mode rejection ratio for accurate signal conditioning

Applications

• Battery-powered sensor interfaces
• Medical instrumentation
• Industrial process control systems

Procurement Notes

Verify the specific suffix 'U' indicates the SOIC-8 package variant when ordering. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure the selected component matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select the INA122U for applications requiring low power consumption with single-supply operation. Consider its 120 kHz bandwidth and 83 dB CMRR for precision signal amplification tasks. Evaluate the 500 µV input offset voltage against system accuracy requirements. Compare performance metrics with other instrumentation amplifiers if higher bandwidth or lower noise is necessary.

Part Context

The INA122U belongs to the INA122 series of instrumentation amplifiers from Texas Instruments. This series is characterized by its micro-power architecture and single-supply functionality. The 'U' designation specifically identifies the surface-mount SOIC-8 package version, distinguishing it from other packaging options within the same functional family.