INA132U/2K5G4

Overview

The INA132U/2K5G4 is a low-power, single-supply difference amplifier manufactured by Texas Instruments. It integrates a precision operational amplifier with an internal laser-trimmed resistor network to provide a fixed gain of 1 V/V and high common-mode rejection. The device operates on a single supply voltage ranging from 2.7V to 36V or dual supplies from ±1.35V to ±18V. Key electrical parameters include a -3dB bandwidth of 300 kHz, a slew rate of 0.1 V/µs, and an input bias current of 5 nA. It features an input offset voltage of 75 µV and delivers an output current of 12 mA per channel. The component is housed in an 8-pin SOIC package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a precision op amp with a laser-trimmed internal resistor network for accurate gain and high common-mode rejection without external components.
• Features an input common-mode voltage range that extends to the negative rail, making it suitable for single-supply applications.
• Provides excellent temperature stability through matched thermal coefficients (TCR) of the internal resistors.

Applications

• Current sensing circuits
• Video and video signal processing
• Photodiode amplifiers

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's latest documentation to confirm compliance status and material composition details. Ensure the ordering part number matches the required tape-and-reel packaging configuration. Cross-reference the datasheet revision date to validate all listed electrical characteristics and mechanical dimensions before finalizing procurement specifications.

Selection Notes

Select this component when a unity-gain differential amplifier with high common-mode rejection is required for single-supply systems. It is appropriate for applications needing low power consumption and extended input common-mode ranges. Consider the 300 kHz bandwidth and 0.1 V/µs slew rate limits for signal frequency requirements. Verify that the 12 mA output drive capability meets the load requirements of the downstream circuitry.

Part Context

This device belongs to the INA132 family of difference amplifiers designed for precision signal conditioning. It serves as a complete solution for subtracting two voltages while rejecting common-mode noise. The integration of the resistor network eliminates the need for external precision matching components, simplifying board layout and reducing overall system cost compared to discrete solutions.

Replacement Considerations

• INA132UA/2K5
• INA132UG4

FAQ

What is the fixed voltage gain of the INA132U/2K5G4?

The INA132U/2K5G4 has a fixed voltage gain of 1 V/V, determined by its internal laser-trimmed resistor network.

Does the INA132U/2K5G4 support single-supply operation?

Yes, the device is designed for single-supply operation with a voltage range of 2.7V to 36V, and its input common-mode range extends to the negative rail.