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Precision op amps (Vos<1mV)

OPA2333

ACTIVE

1.8V, 17µA, 2 channels, microPower, Precision, Zero Drift CMOS Op Amp

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Data sheet

OPA2333

ACTIVE
Data sheet Order now

Product details

Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.8 Vos (offset voltage @ 25 C) (Max) (mV) 0.01 GBW (Typ) (MHz) 0.35 Features EMI Hardened, Small Size, Zero Drift Slew rate (Typ) (V/us) 0.16 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 0.02 Iq per channel (Typ) (mA) 0.017 Vn at 1 kHz (Typ) (nV/rtHz) 55 CMRR (Typ) (dB) 130 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 200 Output current (Typ) (mA) 5 Architecture CMOS
Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.8 Vos (offset voltage @ 25 C) (Max) (mV) 0.01 GBW (Typ) (MHz) 0.35 Features EMI Hardened, Small Size, Zero Drift Slew rate (Typ) (V/us) 0.16 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 0.02 Iq per channel (Typ) (mA) 0.017 Vn at 1 kHz (Typ) (nV/rtHz) 55 CMRR (Typ) (dB) 130 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 200 Output current (Typ) (mA) 5 Architecture CMOS
SOIC (D) 8 19 mm² 3.91 x 4.9 VSON (DRB) 8 9 mm² 3.0 x 3.0 VSSOP (DGK) 8 15 mm² 3 x 4.9
  • Low Offset Voltage: 10 µV (Maximum)
  • Zero Drift: 0.05 µV/°C (Maximum)
  • 0.01-Hz to 10-Hz Noise: 1.1 µVPP
  • Quiescent Current: 17 µA
  • Single-Supply Operation
  • Supply Voltage: 1.8 V to 5.5V
  • Rail-to-Rail Input/Output
  • microSize Packages: SC70 and SOT23
  • Low Offset Voltage: 10 µV (Maximum)
  • Zero Drift: 0.05 µV/°C (Maximum)
  • 0.01-Hz to 10-Hz Noise: 1.1 µVPP
  • Quiescent Current: 17 µA
  • Single-Supply Operation
  • Supply Voltage: 1.8 V to 5.5V
  • Rail-to-Rail Input/Output
  • microSize Packages: SC70 and SOT23

The OPAx333 series of CMOS operational amplifiers use a proprietary auto-calibration technique to simultaneously provide very low offset voltage (10 µV, maximum) and near-zero drift over time and temperature. These miniature, high-precision, low quiescent current amplifiers offer high-impedance inputs that have a common-mode range 100 mV beyond the rails, and rail-to-rail output that swings within 50 mV of the rails. Single or dual supplies as low as 1.8 V (±0.9 V) and up to 5.5 V (±2.75 V) can be used. These devices are optimized for low-voltage, single-supply operation.

The OPAx333 family offers excellent CMRR without the crossover associated with traditional complementary input stages. This design results in superior performance for driving analog-to-digital converters (ADCs) without degradation of differential linearity.

The OPA333 (single version) is available in the 5-pin SOT-23, SOT, and 8-pin SOIC packages, while the OPA2333 (dual version) is available in the 8-pin VSON, SOIC, and VSSOP packages. All versions are specified for operation from –40°C to 125°C.

The OPAx333 series of CMOS operational amplifiers use a proprietary auto-calibration technique to simultaneously provide very low offset voltage (10 µV, maximum) and near-zero drift over time and temperature. These miniature, high-precision, low quiescent current amplifiers offer high-impedance inputs that have a common-mode range 100 mV beyond the rails, and rail-to-rail output that swings within 50 mV of the rails. Single or dual supplies as low as 1.8 V (±0.9 V) and up to 5.5 V (±2.75 V) can be used. These devices are optimized for low-voltage, single-supply operation.

The OPAx333 family offers excellent CMRR without the crossover associated with traditional complementary input stages. This design results in superior performance for driving analog-to-digital converters (ADCs) without degradation of differential linearity.

The OPA333 (single version) is available in the 5-pin SOT-23, SOT, and 8-pin SOIC packages, while the OPA2333 (dual version) is available in the 8-pin VSON, SOIC, and VSSOP packages. All versions are specified for operation from –40°C to 125°C.
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Technical documentation

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Type Title Date
* Data sheet OPAx333 1.8-V, microPower, CMOS Operational Amplifiers, Zero-Drift Series datasheet (Rev. E) PDF | HTML 17 Dec 2015
E-book An Engineer’s Guide to Designing with Precision Amplifiers 29 Apr 2021
Application note Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. C) PDF | HTML 13 Apr 2021
Technical article Designing with low-power op amps, part 1: Power-saving techniques for op-amp circuits 02 Feb 2021
Application note High-Performance 16-bit PWM to 4- to 20-mA DAC for Field Transmitters 26 Mar 2020
Circuit design Low-power, bidirectional current-sensing circuit (Rev. A) 18 Feb 2019
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Technical article How to fix your simulations when the macromodel’s voltage noise doesn’t match the datasheet 30 Sep 2016
Technical article Trimmed or chopped: How do you like your op amp? 07 Apr 2015
Application note OPA333, OPA2333 EMI Immunity Performance (Rev. A) 31 Oct 2012

Design & development

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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.

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Evaluation board

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User guide: PDF | HTML
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Simulation model

OPAx333 PSpice Model (Rev. G)

SBOC084G.ZIP (30 KB) - PSpice Model
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Simulation model

OPAx333 TINA-TI Reference Design (Rev. G)

SBOC083G.TSC (323 KB) - TINA-TI Reference Design
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OPAx333 TINA-TI Spice Model (Rev. F)

SBOM166F.ZIP (11 KB) - TINA-TI Spice Model
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Calculation tool

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CIRCUIT060010 — PWM generator circuit

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CIRCUIT060011 — Single-supply, second-order, multiple feedback high-pass filter circuit

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CIRCUIT060012 — Single-supply, 2nd-order, multiple feedback low-pass filter circuit

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Design tool

CIRCUIT060014 — Voltage-to-current (V-I) converter circuit with MOSFET

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Design tool

CIRCUIT060016 — Non-inverting microphone pre-amplifier circuit

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CIRCUIT060074 — High-side current sensing with comparator circuit

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Design tool

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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 (...)
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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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Reference designs

TIPD116 — Data Acquisition Block for ECG Systems, discrete LEAD I ECG implementation Reference Design

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Reference designs

TIPD102 — High-Side V-I Converter, 0-2V to 0-100mA, 1% Full Scale Error

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Schematic: PDF
Package Pins Download
SOIC (D) 8 View options
SON (DRB) 8 View options
VSSOP (DGK) 8 View options

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