INA103KU/1K

Overview

The INA103KU/1K is a low-noise, low-distortion instrumentation amplifier manufactured by Texas Instruments. It features a fixed gain of 1000 V/V and utilizes a single external resistor for gain adjustment. The device operates on dual supplies ranging from ±2.25V to ±18V or a single supply up to 36V. Key electrical specifications include a maximum input offset voltage of 75µV, a maximum input bias current of 2nA, and a typical noise density of 4nV/√Hz at 1kHz. It provides a common-mode rejection ratio of 90dB and supports an output swing within 1V of the supply rails.

Feature Summary

• Integrated precision matched resistors enable a fixed high gain configuration with minimal external component requirements.
• Low noise architecture ensures signal integrity in sensitive measurement applications.
• Wide supply voltage range supports operation in both single and dual power supply systems.

Applications

• Precision data acquisition systems
• Medical instrumentation
• Industrial process control

Procurement Notes

Verify the specific suffix 'KU/1K' against the official datasheet to confirm package type and reel quantity specifications. Ensure the order matches the required temperature grade and RoHS compliance status as defined in the manufacturer's documentation. Cross-reference the part number with authorized distributors to confirm availability and authenticity.

Selection Notes

Select this component when a fixed gain of 1000 is required without the need for programmable gain adjustments. Consider the low noise and distortion characteristics for applications involving small signal amplification. Evaluate the supply voltage constraints to ensure compatibility with the system's power architecture.

Part Context

This part belongs to the Burr-Brown instrumentation amplifier family acquired by Texas Instruments. It is designed for high-accuracy applications requiring stable gain and low error sources. The device integrates the internal resistor network typically found in discrete instrumentation amplifier designs.

Replacement Considerations

The INA217 is documented as a replacement for similar low-noise instrumentation amplifier functions. Verify pinout compatibility and electrical parameter alignment before substitution.