INA114BU

Overview

The INA114BU is a precision instrumentation amplifier manufactured by Texas Instruments, housed in a 16-pin SOIC surface-mount package. It features a single-channel architecture with a gain bandwidth product of 1 MHz and a minimum common-mode rejection ratio of 110 dB. The device operates on dual power supplies ranging from ±3 V to ±15 V, with a maximum supply voltage of 30 V. Key electrical specifications include an input bias current of 500 pA, an input offset voltage of 125 µV, and a slew rate of 60 mV/µs. It supports a wide operating temperature range from -40°C to +85°C.

Feature Summary

• High-precision signal conditioning with low input offset voltage and bias current for accurate measurements
• Integrated internal gain resistor network enabling unity gain stability without external components
• Robust common-mode rejection capability suitable for noisy industrial environments

Applications

• Precision data acquisition systems requiring high accuracy
• Industrial process control sensor interfaces
• Medical equipment signal conditioning

Procurement Notes

Verify the specific suffix 'BU' corresponds to the SOIC-16 package variant when sourcing. Confirm that the required gain configuration aligns with the internal resistor network limitations. Ensure the design accommodates the specified dual-supply voltage requirements and thermal management for the operating temperature range.

Selection Notes

Select this component for applications demanding high CMRR and low drift in a surface-mount form factor. Compare against the PDIP-8 variant if through-hole mounting is preferred. Consider the 1 MHz bandwidth limit for high-speed signal processing needs.

Part Context

This part belongs to the INA114 family of precision instrumentation amplifiers from Texas Instruments. It shares core performance characteristics with other package variants like the INA114AP but differs in physical footprint and mounting style. The family is designed for general-purpose precision analog signal conditioning tasks.

Replacement Considerations

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