OPA189IDR

Instrumentation, Op Amps, Buffer Amps Overview

The OPA189IDR is a single-channel, zero-drift CMOS precision operational amplifier manufactured by Texas Instruments. It features a 14 MHz gain bandwidth product and a 20 V/µs slew rate, supporting supply voltages from 4.5 V to 36 V (±2.25 V to ±18 V). Key electrical specifications include a maximum input offset voltage of 400 nV, an input bias current of 70 pA, and a rail-to-rail output capability. The device operates within a temperature range of -40°C to +125°C and is housed in an SOIC-8 surface-mount package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Zero-drift architecture utilizing auto-zero technology to minimize offset voltage drift over time and temperature variations.
• Rail-to-rail output stage enables full dynamic signal swing across the entire supply voltage range.
• CMOS input stage provides extremely low input bias current for high-impedance source applications.
• Mux-friendly design characteristics support stable operation when driving multiplexer inputs.

Instrumentation, Op Amps, Buffer Amps Applications

• High-resolution data acquisition systems requiring precise signal conditioning
• Medical instrumentation and diagnostic equipment demanding low noise and stability
• Industrial process control sensors and transducer interfaces
• Battery-powered test and measurement devices

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to confirm package type and tape-and-reel quantities. Ensure the component meets RoHS compliance requirements for your region. Confirm that the SOIC-8 package dimensions align with your PCB footprint constraints before finalizing procurement decisions.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when application requirements prioritize ultra-low offset voltage and minimal drift over ultra-high speed. The 14 MHz bandwidth suits moderate-speed precision tasks better than slower chopper amplifiers. Consider the 70 pA bias current for interfacing with high-impedance sensors where leakage currents must be minimized.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the OPA189 family of precision amplifiers designed for general-purpose high-accuracy applications. It serves as a single-channel variant within the series, offering a balance between precision performance and power consumption suitable for various industrial and scientific instruments.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Consult official manufacturer substitution guides for verified equivalents. Cross-reference pinouts and electrical parameters carefully when considering alternative suppliers or updated revisions of the same component family.