OPA182IDR

Instrumentation, Op Amps, Buffer Amps Overview

The OPA182IDR is a single-channel, zero-drift precision operational amplifier from Texas Instruments. It features a maximum input offset voltage of 4 µV and an ultra-low drift of 0.003 µV/°C. The device offers a gain-bandwidth product of 5 MHz and a slew rate of 10 V/µs. Input noise density is 5.7 nV/√Hz at 1 kHz with 0.12 µV peak-to-peak noise in the 0.1-Hz to 10-Hz band. It operates on supply voltages from 4.5 V to 36 V with a quiescent current of 0.85 mA per channel. Common-mode rejection ratio reaches 168 dB.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Zero-drift architecture ensures ultra-low offset voltage and minimal drift over temperature variations.
• MUX-friendly input design prevents inrush currents during large differential voltage application.
• Rail-to-rail output capability allows signal swing close to both supply rails.
• Integrated RFI and EMI filtering protects inputs against radio frequency interference.

Instrumentation, Op Amps, Buffer Amps Applications

• Data acquisition systems
• Battery test equipment
• Weigh scales
• Analog input modules

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'IDR' corresponds to the SOIC-8 package and tape-and-reel shipping format. Confirm that the component meets RoHS standards and humidity sensitivity level requirements for your assembly process. Ensure the ordering information matches the active production status listed in the manufacturer's official documentation.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high DC precision and low noise are required alongside fast settling times. The MUX-friendly feature makes it suitable for multiplexed data acquisition channels. Consider the rail-to-rail output if maximizing dynamic range near supply limits is necessary. Verify thermal performance within the SOIC-8 package for your specific power dissipation needs.

Instrumentation, Op Amps, Buffer Amps Part Context

The OPA182 belongs to the OPAx182 family, which includes dual (OPA2182) and quad (OPA4182) variants. These devices share identical electrical characteristics and zero-drift technology. The family is designed for general-purpose and precision applications requiring stability across wide temperature ranges. All variants offer rail-to-rail outputs and robust protection features.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional equivalents within the same family include OPA2182 for dual-channel applications and OPA4182 for four-channel configurations. For single-channel replacements, verify pin compatibility and package dimensions. Cross-reference specifications such as offset voltage and bandwidth to ensure system performance is maintained.

Instrumentation, Op Amps, Buffer Amps FAQ

Does the OPA182 exhibit phase reversal?

No, the OPA182 includes internal phase-reversal protection to prevent output polarity inversion when the input exceeds the linear common-mode range.

What is the input bias current specification?

The input bias current is typically 350 pA at 25°C and increases to 7 nA at the maximum operating temperature of 125°C.