INA2132UA/2K5E4

Overview

The INA2132UA/2K5E4 is a low-power, single-supply difference amplifier manufactured by Texas Instruments. It integrates a precision operational amplifier with a laser-trimmed resistor network to provide a fixed gain of one volt per volt. The device features high common-mode rejection and excellent temperature coefficient tracking for stable performance across varying thermal conditions. Designed for single or dual supply operation, it supports voltage ranges from 2.7V to 36V or ±1.35V to ±18V respectively. The component operates within an extended industrial temperature range of -40°C to +85°C and is housed in an 8-pin SOIC surface-mount package.

Feature Summary

• Integrates a precision op amp with a laser-trimmed resistor network for accurate gain and high common-mode rejection without external components.
• Internal op amp common-mode range extends to the negative rail, making it suitable for single-supply applications.
• Resistor network exhibits excellent temperature coefficient tracking to maintain gain accuracy and common-mode rejection over temperature variations.

Applications

• Current sensing circuits requiring precise differential voltage measurement.
• Bridge sensor signal conditioning for strain gauges and load cells.
• Industrial process control systems utilizing single-supply power architectures.

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free compliance status as defined by Texas Instruments documentation. Confirm that the '/2K5' designation corresponds to the specified tape and reel packaging quantity when placing orders. Ensure compatibility with standard SOIC-8 footprint requirements during PCB layout. Cross-reference official datasheets for any updates regarding moisture sensitivity levels or recommended soldering profiles prior to assembly.

Selection Notes

Select this component when a fixed unity-gain differential amplifier is required with minimal external component count. It is appropriate for designs needing high common-mode rejection ratios in noisy environments. Consider its low power consumption characteristics for battery-operated or thermally constrained systems. Verify that the input common-mode voltage range aligns with the system's single-supply architecture.

Part Context

This part belongs to the INA132 family of difference amplifiers from Texas Instruments. The family is characterized by integrated precision resistors and low power consumption. The INA2132 variant specifically offers enhanced speed compared to earlier iterations while maintaining the core benefit of a monolithic, trimmed resistor network. It serves as a direct replacement for discrete resistor-based difference amplifier configurations.

Replacement Considerations

The INA2132U is a compatible alternative offering identical electrical specifications and functionality. Both parts share the same pinout and package dimensions, allowing for direct substitution in existing designs without circuit modification.