Product details

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 4.5 Vos (offset voltage @ 25 C) (Max) (mV) 0.004 GBW (Typ) (MHz) 5 Features EMI Hardened, MUX Friendly, Zero Drift Slew rate (Typ) (V/us) 10 Rail-to-rail Out Offset drift (Typ) (uV/C) 0.003 Iq per channel (Typ) (mA) 0.85 Vn at 1 kHz (Typ) (nV/rtHz) 5.7 CMRR (Typ) (dB) 168 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 350 Output current (Typ) (mA) 65 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.00008
Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 4.5 Vos (offset voltage @ 25 C) (Max) (mV) 0.004 GBW (Typ) (MHz) 5 Features EMI Hardened, MUX Friendly, Zero Drift Slew rate (Typ) (V/us) 10 Rail-to-rail Out Offset drift (Typ) (uV/C) 0.003 Iq per channel (Typ) (mA) 0.85 Vn at 1 kHz (Typ) (nV/rtHz) 5.7 CMRR (Typ) (dB) 168 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 350 Output current (Typ) (mA) 65 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.00008
SOIC (D) 8 19 mm² 4.9 x 3.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • Ultra-high precision:
    • Zero-drift: 0.003 µV/°C
    • Ultra-low offset voltage: 4 µV (maximum)
  • Excellent dc precision:
    • CMRR: 168 dB
    • Open-loop gain: 170 dB
  • Low noise:
    • en at 1 kHz: 5.7 nV/√Hz
    • 0.1-Hz to 10-Hz noise: 0.12 µVPP
  • Excellent dynamic performance:
    • Gain bandwidth: 5 MHz
    • Slew rate: 10 V/µs
    • Fast settling: 10-V step, 0.01% in 1.7 µs
  • Robust design:
    • MUX-friendly inputs
    • RFI and EMI filtered inputs
  • Wide supply: ±2.25 V to ±18 V, 4.5 V to 36 V
  • Quiescent current: 0.85 mA
  • Rail-to-rail output
  • Input includes negative rail
  • Ultra-high precision:
    • Zero-drift: 0.003 µV/°C
    • Ultra-low offset voltage: 4 µV (maximum)
  • Excellent dc precision:
    • CMRR: 168 dB
    • Open-loop gain: 170 dB
  • Low noise:
    • en at 1 kHz: 5.7 nV/√Hz
    • 0.1-Hz to 10-Hz noise: 0.12 µVPP
  • Excellent dynamic performance:
    • Gain bandwidth: 5 MHz
    • Slew rate: 10 V/µs
    • Fast settling: 10-V step, 0.01% in 1.7 µs
  • Robust design:
    • MUX-friendly inputs
    • RFI and EMI filtered inputs
  • Wide supply: ±2.25 V to ±18 V, 4.5 V to 36 V
  • Quiescent current: 0.85 mA
  • Rail-to-rail output
  • Input includes negative rail

The OPA182, OPA2182, and OPA4182 (OPAx182) are ultra-low noise, fast-settling, zero-drift, high-precision operational amplifiers, These devices provide rail-to-rail output operation and feature a unique MUX-friendly architecture and controlled start-up system. These devices also feature excellent ac performance combined with only 0.45 µV of offset voltage and 0.003 µV/°C of drift over temperature. All these features make the OPAx182 a great choice for data acquisition, battery test, analog input modules, weigh scales, and any other systems requiring high dc precision and low noise.

The MUX-friendly input architecture prevents inrush current when applying large input differential voltages and improves settling performance in multichannel systems. Moreover, the controlled start-up system rejects any inrush current when ramping up the supply rails, all while providing robust ESD protection during shipment, handling, and assembly.

The device is specified from –40°C to +125°C.

The OPA182, OPA2182, and OPA4182 (OPAx182) are ultra-low noise, fast-settling, zero-drift, high-precision operational amplifiers, These devices provide rail-to-rail output operation and feature a unique MUX-friendly architecture and controlled start-up system. These devices also feature excellent ac performance combined with only 0.45 µV of offset voltage and 0.003 µV/°C of drift over temperature. All these features make the OPAx182 a great choice for data acquisition, battery test, analog input modules, weigh scales, and any other systems requiring high dc precision and low noise.

The MUX-friendly input architecture prevents inrush current when applying large input differential voltages and improves settling performance in multichannel systems. Moreover, the controlled start-up system rejects any inrush current when ramping up the supply rails, all while providing robust ESD protection during shipment, handling, and assembly.

The device is specified from –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet OPAx182 36-V, 5-MHz, Low-Noise, Zero-Drift, MUX-Friendly, Precision Op Amps datasheet (Rev. E) PDF | HTML 30 Aug 2022
Application note MUX-Friendly, Precision Operational Amplifiers (Rev. C) PDF | HTML 08 Feb 2022
Application note Voltage-to-current (V-I) converter circuit with MOSFET (Rev. A) PDF | HTML 20 Aug 2021
Application note Minimize Errors in Weigh-Scales With Zero-Drift, EMI-Hardened, Precision Amps (Rev. A) PDF | HTML 08 Dec 2020
Application note How to Select Precision Amplifiers for Semiconductor Testers (Rev. A) PDF | HTML 03 Dec 2020
Analog Design Journal Precision signal conditioning for safety-enabled AIMs in factory automation 30 Sep 2019
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mar 2005

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

User guide: PDF
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Simulation model

OPAx182 PSpice Model (Rev. C)

SBOMB13C.ZIP (30 KB) - PSpice Model
Simulation model

OPAx182 TINA-TI Reference Design (Rev. B)

SBOMB19B.TSC (318 KB) - TINA-TI Reference Design
Simulation model

OPAx182 TINA-TI Spice Model (Rev. B)

SBOMB14B.ZIP (10 KB) - TINA-TI Spice Model
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Calculation tool

OPAMP-NOISECALC — Noise Calculator, Generator and Examples

This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
  • A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data, (...)
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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