INA143U

Overview

The INA143U is a single-channel precision differential amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. It operates on dual or single power supplies ranging from 4.5 V to 36 V. Key electrical specifications include a supply current of 950 µA, an output current capability of 32 mA, and a slew rate of 5 V/µs. The device features a -3 dB bandwidth of 150 kHz and an input offset voltage of 100 µV. It supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides high-precision differential amplification with low input offset voltage for accurate signal processing.
• Supports flexible power supply configurations including both single and dual supply operation within a wide voltage range.
• Delivers robust output drive capability suitable for interfacing with various downstream circuit loads.

Applications

• Industrial process control systems requiring precise sensor signal conditioning
• Medical instrumentation equipment needing high common-mode rejection
• Data acquisition systems utilizing bridge sensors

Procurement Notes

Verify the specific suffix code against the manufacturer datasheet to confirm pinout and package dimensions. Confirm RoHS compliance status as required by project specifications. Check for end-of-life notices or production changes that may affect long-term availability. Ensure the selected variant matches the required thermal performance for the intended operating environment.

Selection Notes

Select this component when a single-channel precision differential amplifier is required with a wide supply voltage range. Consider the 150 kHz bandwidth and 5 V/µs slew rate for signal frequency requirements. Evaluate the 8-SOIC package constraints against PCB layout space. Compare input offset voltage specifications against system accuracy needs.

Part Context

The INA143U belongs to the INA143 family of precision differential amplifiers from Texas Instruments. This series is designed for applications demanding high common-mode rejection and low distortion. The U suffix denotes the SOIC surface-mount package variant, distinguishing it from other packaging options within the same functional family.

Replacement Considerations

INA143UA is listed as a manufacturer-recommended alternative with identical functionality but potentially different packaging quantities.