INA331AIDGKR

Overview

The INA331AIDGKR is a single-channel instrumentation amplifier from Texas Instruments, designed for low-power applications. It features a CMOS input stage with a maximum supply voltage of 5.5 V and a minimum of 2.7 V. Key electrical parameters include a 2 MHz bandwidth, 5 V/us slew rate, and 90 dB common-mode rejection ratio. The device operates with a quiescent current of 415 uA and supports an input bias current of 10 pA. It offers a gain error of 0.1% and a power supply rejection ratio of 86.02 dB. Operating temperatures range from -55 C to +125 C, housed in an 8-pin VSSOP package.

Feature Summary

• CMOS input architecture enabling ultra-low input bias current
• Single-supply operation capability for simplified system design
• High common-mode rejection ratio for accurate signal conditioning

Applications

• Low-power sensor signal conditioning
• Battery-operated measurement systems
• Industrial process control transmitters

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape-and-reel specifications. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles defined by the manufacturer. Cross-reference ordering numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when low quiescent current and single-supply operation are critical. The CMOS input stage suits high-impedance sources requiring minimal loading. Evaluate thermal performance within the specified temperature range for long-term reliability in harsh environments.

Part Context

This part belongs to the INA331 series of instrumentation amplifiers. It shares core architectural features with other variants in the family but differs in packaging and shipping configuration. The series is characterized by its balance of precision and power efficiency.