INA114AU

Overview

The INA114AU is a precision instrumentation amplifier manufactured by Texas Instruments, housed in an 8-pin SOIC surface-mount package. It features a low input bias current of 500 pA and a maximum input offset voltage of 125 µV. The device operates on a single supply ranging from 2.25 V to 18 V or dual supplies up to ±9 V. It provides a gain bandwidth product of 1 MHz and a minimum common-mode rejection ratio of 110 dB.

Feature Summary

• High-precision signal amplification with ultra-low input bias current
• Integrated internal gain resistor for simplified circuit design
• Wide single-supply operating range compatible with low-voltage systems

Applications

• Precision data acquisition systems
• Strain gauge and bridge sensor interfaces
• Medical equipment signal conditioning

Procurement Notes

Verify the specific suffix 'U' corresponds to the SOIC-8 package variant when sourcing. Confirm that the component meets RoHS compliance standards required for your manufacturing process. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component for applications requiring high accuracy with minimal external components. The fixed internal gain simplifies layout compared to adjustable counterparts. Verify that the 1 MHz bandwidth aligns with the signal frequency requirements of the target application.

Part Context

This part belongs to the INA114 family of instrumentation amplifiers known for their ease of use and high performance. The AU designation specifically identifies the surface-mount version, distinguishing it from through-hole packages like the PDIP variant within the same functional series.