INA115BU

Overview

The INA115BU is a precision instrumentation amplifier from Texas Instruments, housed in a 16-SOIC package. It features a gain range of 1 V/V to 10,000 V/V with a gain error of 0.002%. Key electrical parameters include a 3dB bandwidth of 10 kHz, a slew rate of 600 mV/us, and a common-mode rejection ratio (CMRR) of 110 dB. The input offset voltage is 50 uV, and the input bias current is 2 nA. It operates on a supply voltage between 4.5 V and 36 V, consuming 2.2 mA of quiescent current. The device supports an operating temperature range from -40 C to +85 C.

Feature Summary

• Offers excellent accuracy with a low cost general-purpose design suitable for versatile applications.
• Utilizes a three-op amp architecture that provides high input impedance and precise signal conditioning capabilities.

Applications

• Precision measurement systems requiring high accuracy
• Industrial process control instrumentation
• Medical equipment signal processing

Procurement Notes

Verify the specific suffix 'BU' corresponds to the SOIC-16 surface-mount package when ordering. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure the selected component matches the required operating temperature range and supply voltage specifications for the target application environment.

Selection Notes

Select this component for applications demanding high CMRR and low input offset voltage within a single-channel configuration. Consider the 1 MHz gain-bandwidth product and 10 kHz bandwidth limits when designing for higher frequency signals. Evaluate the 16-SOIC footprint constraints against available PCB space and thermal management requirements for the intended enclosure design.

Part Context

The INA115BU belongs to the INA115 series of precision instrumentation amplifiers manufactured by Texas Instruments. This series is designed to provide accurate differential amplification for sensor signals. The BU suffix specifically denotes the plastic small-outline integrated circuit (SOIC) package variant, distinguishing it from other packaging options within the same functional family.

Replacement Considerations

Consult official Texas Instruments substitution guides for verified equivalents. Cross-reference pinouts and electrical characteristics carefully when considering alternative instrumentation amplifiers to ensure compatibility with existing circuit designs.