INA332AIDGKR

Overview

The INA332AIDGKR is a single-channel instrumentation amplifier from Texas Instruments, housed in an 8-VSSOP package. It operates on a supply voltage range of 2.5 V to 5.5 V with a quiescent current of 415 µA. Key electrical specifications include a 2 MHz bandwidth, a slew rate of 5 V/µs, and a common-mode rejection ratio (CMRR) of 60 dB. The device features low input bias current of 0.5 pA and an input offset voltage of 2 mV. It supports rail-to-rail output and functions within a temperature range of -55°C to 125°C.

Feature Summary

• Low power consumption suitable for battery-operated applications
• Rail-to-rail output capability for maximum dynamic range
• High input impedance with CMOS input stage

Applications

• Signal conditioning for resistive bridge sensors
• Current sensing using high-side shunt configurations
• Data acquisition systems requiring precise differential amplification

Procurement Notes

Verify the specific suffix 'DGKR' corresponds to the tape-and-reel packaging format when ordering. Confirm that the 8-VSSOP footprint matches the target PCB design. Ensure the operating environment stays within the specified -55°C to 125°C range to maintain guaranteed performance parameters. Check for moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component when a low-power, single-supply instrumentation amplifier is required for precision signal conditioning. It is appropriate for applications involving low-level sensor outputs where high input impedance and moderate bandwidth are necessary. Consider the 8-VSSOP package constraints for space-limited designs. Evaluate if the 60 dB CMRR meets the noise rejection requirements of the specific application environment.

Part Context

This part belongs to the INA332 family of low-cost, low-power instrumentation amplifiers. It serves as a general-purpose solution for interfacing sensors to microcontrollers or ADCs. The device integrates a fixed gain architecture to simplify circuit design while maintaining accuracy. It is designed to replace older discrete solutions or higher-power amplifier alternatives in portable and industrial monitoring devices.

Replacement Considerations

Check datasheets for alternative TI models like INA333 or INA334 for variations in gain options or pinout compatibility. Verify that any substitute maintains the same 8-VSSOP package and electrical characteristics such as supply voltage range and bandwidth.