INA141UA/2K5G4

Overview

The INA141UA/2K5G4 is a precision instrumentation amplifier manufactured by Texas Instruments, featuring a fixed internal gain of 10 V/V. It operates within a supply voltage range of 4.5 V to 36 V and supports dual supplies up to ±18 V. Key electrical specifications include a maximum input offset voltage of 75 µV, an input bias current of 5 nA, and a common-mode rejection ratio (CMRR) of 90 dB. The device provides a bandwidth of 200 kHz and consumes 750 µA of quiescent current per channel. It is housed in a standard SOIC-16 surface-mount package.

Feature Summary

• Fixed internal gain of 10 V/V eliminates the need for external resistors, simplifying circuit design and ensuring high accuracy.
• High common-mode rejection ratio of 90 dB enables precise signal extraction from noisy environments with large common-mode voltages.
• Wide single-supply operating range from 4.5 V to 36 V allows compatibility with various industrial power systems.

Applications

• Industrial process control sensor signal conditioning
• Medical equipment data acquisition systems
• Precision measurement instrumentation

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's latest documentation to confirm compliance with RoHS directives and lead time requirements. Confirm that the SOIC-16 package matches your PCB footprint constraints. Ensure the fixed gain of 10 V/V meets your system's amplification needs without requiring additional external components.

Selection Notes

Select this component when a fixed gain of 10 V/V is required for high-precision applications. It is suitable for designs needing wide supply voltage flexibility and low power consumption. Consider alternatives if adjustable gain or higher bandwidth is necessary, as this part offers a fixed configuration optimized for stability and noise performance.

Part Context

This part belongs to the INA141 family of instrumentation amplifiers, designed for general-purpose precision applications. It shares characteristics with other devices in the series but is distinguished by its specific gain setting and packaging options. The family is known for providing robust performance in industrial and medical environments where signal integrity is critical.

Replacement Considerations

Check for direct pin-compatible replacements such as the INA141U or other variants within the INA141 series. Verify that any substitute maintains the same fixed gain of 10 V/V and SOIC-16 package to ensure seamless integration into existing designs.