OPA4186DR

Instrumentation, Op Amps, Buffer Amps Overview

The OPA4186DR is a quad-channel, zero-drift operational amplifier from Texas Instruments. It features rail-to-rail input and output capabilities with a supply voltage range of 4.5 V to 24 V. The device offers high precision with an offset voltage of up to 40 µV and drift of 0.1 µV/°C. Key electrical parameters include a gain-bandwidth product of 750 kHz, a slew rate of 0.35 V/µs, and a quiescent current of 90 µA per amplifier. It operates within a temperature range of –40°C to +125°C and is housed in a 14-pin SOIC package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Zero-drift architecture providing ultra-low offset voltage and minimal drift over temperature
• Rail-to-rail input and output for maximum dynamic range without headroom requirements
• Integrated EMI filtering to maintain performance in noisy environments
• Phase-reversal protection prevents output inversion during common-mode overload

Instrumentation, Op Amps, Buffer Amps Applications

• PC PSU and game console unit monitoring
• Merchant DC/DC converter control
• Flow transmitter signal conditioning
• Pressure transmitter measurement
• Electricity metering systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix 'DR' corresponds to the SOIC-14 tape-and-reel packaging configuration. Confirm that the component meets RoHS compliance standards required for your assembly process. Ensure the design accommodates the specified thermal resistance values for the selected PCB layout to maintain junction temperatures within the recommended operating limits.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high precision and low power consumption are critical. The zero-drift technology eliminates the need for external calibration in many applications. Consider the 750 kHz bandwidth for moderate-speed signal processing tasks. The rail-to-rail I/O simplifies interface design with single-supply ADCs and microcontrollers.

Instrumentation, Op Amps, Buffer Amps Part Context

The OPA4186 is part of the OPAx186 family, which includes single (OPA186) and dual (OPA2186) channel variants. All members share the same zero-drift architecture and electrical characteristics. This family is designed for general-purpose precision applications requiring low power and high accuracy in industrial and consumer electronics.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional substitutes within the same family include OPA186 and OPA2186, though channel counts differ. Verify pin compatibility if replacing with other quad amplifiers, as pinouts may vary across different manufacturers or families.