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High precision opamp

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The AS2333 is dual CMOS operational amplifiers designed with chopping stabilization technique. This product can provide ultra-low input offset voltage (8μV typical) and near zero-drift over time and temperature. This technique also eliminates 1/f noise, and the cross over distortion presented in most rail to rail input operational amplifiers. The high-precision, low quiescent current amplifier offers high-impedance inputs that have a common-mode range 100mV beyond the rails, and rail-to-rail output that swings within 50mV of the rails. Single or dual supplies as low as 1.8V (±0.9V) and up to 5.5V (±2.75V) can be used.

The device is optimized for low voltage single supply application, especially for low-power high precision applications.

The AS2333 is available in standard 8-pin SO-8, MSOP-8 and U-DFN3030-8 (Type E) packages, and is specified for operation from - 40°C to +125°C.


  • Low Input Offset Voltage: 8μV (typ)
  • Zero Drift: 0.02μV/°C (typ)
  • 0.01Hz to 10Hz Noise: 1.1μVPP
  • Low Quiescent Current: 12μA per Amplifier
  • Supply Voltage: 1.8V to 5.5V
  • Rail-to-Rail Input and Output
  • Bandwidth 350kHz
  • Slew Rate 0.12V/μs (typ)
  • MSOP-8, SO-8 and U-DFN3030-8 (Type E) Packages
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • Battery-Powered Instruments
  • Handheld Test Equipment
  • Medical Instrumentation
  • Sensor Signal Conditioning
  • Low Voltage Current Sensing

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
AEC Qualified No
Number of Channels 2
Minimum Supply Voltage (V) 1.8 V
Maximum Supply Voltage (V) 5.5 V
Supply Current @ 5V (per Op Amp) (mA) 0.012 mA
Input Offset Voltage typ (mV) 0.008 mV
Input Bias Current typ (nA) 0.07 nA
Minimum Input Common Mode Voltage (V) V- -0.1 V
Maximum Input Common Mode Voltage (V) V+ +0.1 V
Output Current Source (mA) 5 mA
Output Current Sink (mA) 25 mA
Rail-Rail Input/ Output
Operating Ambient Temperature Range (°C) -40 to 125 °C

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