INA332AIDGKTG4

Overview

The INA332AIDGKTG4 is a single-channel instrumentation amplifier manufactured by Texas Instruments, designed for low-power applications. It operates on a single supply voltage ranging from 2.5 V to 5.5 V with a typical operating current of 415 µA. The device features a 2 MHz bandwidth and a slew rate of 5 V/µs. Key electrical specifications include a common-mode rejection ratio (CMRR) of 60 dB, an input bias current of 10 pA, and an input offset voltage of 8 mV. It offers a power supply rejection ratio (PSRR) of 86.02 dB and a gain error of 0.4%. The component supports an input resistance up to 10 TΩ and functions within a temperature range of -55°C to +125°C.

Feature Summary

• Low-power CMOS architecture optimized for single-supply operation
• High input impedance suitable for precision signal conditioning
• Rail-to-rail output capability for maximum dynamic range

Applications

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

Procurement Notes

Verify the complete part number including the G4 suffix to ensure compliance with RoHS directives and lead-free manufacturing standards. Confirm the specific package variant matches the design requirements, as the DGK designation indicates a VSSOP-8 package. Check moisture sensitivity levels and storage conditions prior to assembly to prevent damage during reflow soldering processes.

Selection Notes

Select this component when low quiescent current is critical alongside moderate precision requirements. The 8 mV offset voltage and 60 dB CMRR distinguish it from higher-performance counterparts like the INA333. Ensure the application does not require chopper-stabilized accuracy or significantly higher bandwidth than the specified 2 MHz limit.

Part Context

This part belongs to the INA332 family of instrumentation amplifiers, which are engineered for cost-sensitive and power-constrained environments. The INA332 provides a fixed internal gain, simplifying external circuit design compared to programmable gain alternatives. It serves as a foundational building block for differential signal acquisition in compact electronic devices.

Replacement Considerations

The INA332AIDGKR is a compatible alternative within the same series, differing primarily in packaging format while maintaining identical electrical characteristics.