INA141UA

Overview

The INA141UA is a precision instrumentation amplifier manufactured by Burr-Brown, featuring fixed internal gain options of 10 V/V and 100 V/V. It operates on a single supply voltage ranging from 3V to 36V or dual supplies up to ±18V. Key electrical parameters include a maximum input offset voltage of 250µV, a typical input bias current of 2nA, and a gain bandwidth product of 35kHz. The device is housed in an 8-pin SOIC package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Fixed internal gain configurations of 10 V/V and 100 V/V eliminate the need for external precision resistors.
• Low power consumption design suitable for battery-operated applications.
• High common-mode rejection ratio ensures accurate signal amplification in noisy environments.

Applications

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

Procurement Notes

Verify the manufacturer marking matches Burr-Brown or Texas Instruments specifications. Confirm the package type is SOIC-8 and check for RoHS compliance status if required by your assembly process. Ensure the part number suffix indicates the correct temperature grade and packaging format.

Selection Notes

Select this component when fixed gain is acceptable to simplify circuit design and reduce component count. It is appropriate for low-frequency applications where the 35kHz gain bandwidth is sufficient. Consider the 250µV max offset voltage for high-precision DC measurements.

Part Context

This part belongs to the Burr-Brown family of precision analog integrated circuits, now under Texas Instruments. It is designed as a drop-in replacement for older instrumentation amplifier designs requiring fixed gain stages without external resistor trimming.

Replacement Considerations

Check datasheets for INA141 variants with different suffixes for packaging or environmental compliance differences. Verify pin compatibility with existing PCB layouts before substitution.