INA331IDGKT

Overview

The INA331IDGKT is a single-channel instrumentation amplifier manufactured by Texas Instruments, housed in an 8-VSSOP surface-mount package. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a typical supply current of 415 µA. Key electrical characteristics include a 2 MHz bandwidth, a slew rate of 5 V/µs, and a maximum input offset voltage of 500 µV. The device features rail-to-rail output capability and supports an operating temperature range from -55°C to +125°C.

Feature Summary

• Low-power operation suitable for battery-powered applications
• Rail-to-rail output swing maximizes dynamic range
• CMOS input stage provides high input impedance

Applications

• Portable medical instrumentation
• Industrial process control sensors
• Data acquisition systems

Procurement Notes

Verify the specific suffix 'KT' corresponds to the tape-and-reel packaging configuration when ordering. Confirm that the 8-VSSOP footprint matches the target PCB design. Ensure the supply voltage remains within the specified 2.7 V to 5.5 V limits during operation. Check for RoHS compliance status if required by project specifications.

Selection Notes

Select this component for applications requiring low power consumption and single-supply operation. The CMOS input architecture is ideal for high-impedance signal sources. Consider the 8-VSSOP package size for space-constrained designs. Evaluate the 2 MHz bandwidth against the required signal frequency response.

Part Context

This part belongs to the INA331 family of low-power instrumentation amplifiers. It shares the same core functionality as the INA331IDGKR but differs in packaging format. The series is designed for precision measurement applications where power efficiency is critical.

Replacement Considerations

INA331IDGKR is a manufacturer-recommended alternative with identical electrical performance but different packaging.