INA331AIDGKTG4

Overview

The INA331AIDGKTG4 is a single-channel instrumentation amplifier from Texas Instruments, housed in an 8-VSSOP surface-mount package. It operates on a supply voltage ranging from 2.7 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 of 90 dB. The device features low input bias current (10 pA) and input offset voltage (1 mV), supporting operation across temperatures from -55°C to +125°C.

Feature Summary

• Provides high common-mode rejection for accurate signal amplification in noisy environments.
• Operates efficiently on low power supplies suitable for battery-powered applications.
• Features rail-to-rail output capability for maximum dynamic range utilization.

Applications

• Precision sensor signal conditioning
• Medical instrumentation front-ends
• Industrial process control systems

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the 8-VSSOP package dimensions match your PCB footprint requirements. Ensure thermal management considerations are addressed for operation within the specified temperature range. Cross-reference the datasheet revision date to ensure compatibility with design specifications.

Selection Notes

Select this component when high accuracy and low power consumption are required in a compact form factor. Compare against the INA331IDGKR if reel packaging is preferred over cut tape. Consider the INA333AIDGKR for applications requiring lower offset voltage despite higher cost. Evaluate the INA332AIDGKTG4 if lower gain error is not critical but cost reduction is necessary.

Part Context

This part belongs to the INA331 family of low-power, CMOS instrumentation amplifiers designed for single-supply operation. It shares the same pinout and basic functionality as other variants in the series, differing primarily in performance grades and packaging options. The family targets applications needing precision amplification with minimal power draw.

Replacement Considerations

INA331IDGKR offers identical electrical performance in a tape-and-reel format. INA331AIDGKT provides the same specifications in cut-tape packaging. For lower offset voltage requirements, consider the INA333AIDGKR series.