INA2143UAE4

Overview

The INA2143UAE4 is a dual, high-speed differential amplifier manufactured by Texas Instruments. It features two independent channels in a 14-pin SOIC package. Key electrical specifications include a gain of G=10 or G=0.1 selectable via external resistors, a bandwidth of 150 kHz, and an input offset voltage of 500 µV. The device operates on supply voltages ranging from ±18 V to 36 V. It supports an operating temperature range from -55°C to 125°C. The component is RoHS compliant and designed for precision applications requiring high-speed signal processing.

Feature Summary

• Dual-channel architecture providing two independent differential amplifiers within a single compact package.
• High-speed performance with a 150 kHz bandwidth suitable for demanding signal processing tasks.
• Flexible gain configuration allowing selection between G=10 and G=0.1 through external resistor networks.
• Wide supply voltage operation supporting both single and dual power supply configurations.

Applications

• Optical network signal conditioning
• Differential data acquisition systems
• Precision sensor interface circuits

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free (RoHS) compliance and tape-and-reel or tube packaging details as per the official datasheet. Confirm the 14-SOIC package dimensions match your PCB footprint requirements. Ensure the operating temperature range of -55°C to 125°C meets your environmental specifications. Cross-reference the manufacturer part number with the latest TI documentation to confirm current production status and any potential obsolescence notices.

Selection Notes

Select this component when dual independent differential amplification is required in a space-constrained design. It is appropriate for applications needing high-speed response with moderate precision. Consider the external resistor tolerance for gain accuracy if using the G=10 or G=0.1 settings. Evaluate the 500 µV offset voltage against your system's noise floor requirements. Compare against single-channel alternatives if only one amplifier path is necessary to optimize cost and board area.

Part Context

The INA2143 belongs to Texas Instruments' family of special purpose amplifiers, specifically designed as high-speed difference amplifiers. It complements other devices like the INA2141, which offers fixed gains but different bandwidth characteristics. This series targets industrial and communication applications where reliable differential signal conversion is critical. The UAE4 variant denotes the specific package and environmental compliance version within the broader INA214x product line.

Replacement Considerations

Check for direct pin-compatible substitutes within the INA214x family, such as the INA2141 or INA2142, noting differences in gain options and bandwidth. Verify that any replacement maintains the 14-SOIC package and similar electrical parameters like bandwidth and offset voltage. Consult the TI substitution guide for officially recommended equivalents that meet the same functional requirements.