INA163UA

Overview

The INA163UA is a precision differential amplifier manufactured by Texas Instruments, featuring dual JFET input stages and an internal high-precision gain circuit. It provides a wide differential input voltage range of ±13V and a programmable gain range from 1 to 1000. The device offers a bandwidth of 1.4MHz with low noise and distortion characteristics. Key electrical parameters include an input bias current of 25nA and operation in an SOIC-8 package. Integrated overload and ESD protection enhance reliability for signal amplification control.

Feature Summary

• Features dual JFET input stages for high common-mode rejection and low noise performance
• Includes internal high-precision gain circuitry supporting adjustable gain settings
• Provides integrated overload protection and electrostatic discharge (ESD) circuits

Applications

• Precision measurement systems
• Sensor signal amplification
• Data acquisition applications

Procurement Notes

Verify the specific suffix 'UA' against the official datasheet to confirm package type and temperature rating. Ensure compatibility with existing board layouts for the SOIC-8 footprint. Confirm supply status directly with authorized distributors as availability may vary. Validate that the component meets all required environmental specifications for the intended operating conditions before finalizing procurement orders.

Selection Notes

Select this component when a wide differential input voltage range exceeding standard operational amplifiers is required. The adjustable gain capability up to 1000 makes it suitable for varying signal levels without external resistors. Consider the 25nA input bias current for applications requiring minimal loading on high-impedance sources. Evaluate the 1.4MHz bandwidth against system speed requirements to ensure adequate signal fidelity.

Part Context

The INA163 belongs to Texas Instruments' family of precision differential amplifiers designed for robust signal conditioning. Compared to similar models like the INA155 or INA156, it offers a larger differential input voltage range and lower input bias current. This positioning targets industrial and scientific instruments where accurate amplification of small differential signals amidst high common-mode voltages is critical.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.