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Precision op amps (Vos<1mV)

OPA333

ACTIVE

Micropower, 1.8-V, 17-µA zero-drift CMOS precision operational amplifier

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Data sheet

OPA333

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.8 Vos (offset voltage at 25°C) (max) (mV) 0.01 GBW (typ) (MHz) 0.35 Features EMI Hardened, Small Size, Zero Drift Slew rate (typ) (V/µs) 0.16 Rail-to-rail In, Out Offset drift (typ) (µV/°C) 0.02 Iq per channel (typ) (mA) 0.017 Vn at 1 kHz (typ) (nV√Hz) 55 CMRR (typ) (dB) 130 Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 200 Iout (typ) (A) 0.005 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.03 Output swing headroom (to positive supply) (typ) (V) -0.03
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.8 Vos (offset voltage at 25°C) (max) (mV) 0.01 GBW (typ) (MHz) 0.35 Features EMI Hardened, Small Size, Zero Drift Slew rate (typ) (V/µs) 0.16 Rail-to-rail In, Out Offset drift (typ) (µV/°C) 0.02 Iq per channel (typ) (mA) 0.017 Vn at 1 kHz (typ) (nV√Hz) 55 CMRR (typ) (dB) 130 Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 200 Iout (typ) (A) 0.005 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.03 Output swing headroom (to positive supply) (typ) (V) -0.03
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • 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
White paper Optimizing Chopper Amplifier Accuracy PDF | HTML 27 Feb 2024
Product overview Bridge Sensor Solution (Rev. A) PDF | HTML 27 Jan 2023
Technical article How to achieve microvoltage-level precision in thermopile applications PDF | HTML 09 Dec 2021
Circuit design Temperature sensing with NTC circuit (Rev. A) PDF | HTML 03 Jun 2021
Circuit design Temperature sensing with PTC circuit (Rev. B) PDF | HTML 19 May 2021
E-book An Engineer’s Guide to Designing with Precision Amplifiers 29 Apr 2021
Technical article The next evolution in automotive op amps PDF | HTML 14 Apr 2021
Application brief Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. C) PDF | HTML 13 Apr 2021
Application brief Zero-Drift Amplifiers: Features and Benefits (Rev. C) 28 Jan 2021
Application brief Minimize Errors in Weigh-Scales With Zero-Drift, EMI-Hardened, Precision Amps (Rev. A) PDF | HTML 08 Dec 2020
Technical article How to design an infrared thermometer quickly PDF | HTML 07 Apr 2020
Application brief EMI-Hardened Op Amps Reduce Errors in Infusion Pumps (Rev. A) 21 Aug 2019
Circuit design Low-power, bidirectional current-sensing circuit (Rev. A) PDF | HTML 18 Feb 2019
Circuit design Low-level voltage-to-current converter circuit PDF | HTML 09 Jan 2019
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
White paper Voltage-reference impact on total harmonic distortion 01 Aug 2016
Application note EMI Rejection Ratio of Op Amps (With OPA333 and OPA333-Q1 as an Example) (Rev. A) 01 Jul 2015
Application note OPA333, OPA2333 EMI Immunity Performance (Rev. A) 31 Oct 2012
Analog Design Journal New zero-drift amplifier has an IQ of 17 μA 18 May 2007

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