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OPA2333 Zero-Drift Op-Amp

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by Ray

Dual micropower zero-drift op-amp with very low offset and rail-to-rail I/O.

op-ampzero-driftdualprecisionlow-powertisoic-8
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Contents

README

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OPA2333

Texas Instruments · Operational Amplifier · SOIC-8

The OPA2333 is a dual micropower CMOS operational amplifier that uses zero-drift (chopper) techniques to achieve low input offset voltage (10 uV max) and near-zero drift over temperature. With rail-to-rail input and output on a single 1.8 V to 5.5 V supply, it suits precision bridge, thermocouple, and current-sense front ends.

Pinout

Pin Name Type Function
1 OUT A output Output of channel A operational amplifier. Rail-to-rail output, swings within 50 mV of the supply rails.
2 -IN A input Inverting input of channel A. Rail-to-rail input, common-mode range extends 100 mV beyond each supply rail. Input current limited to <10 mA if driven beyond rails.
3 +IN A input Noninverting input of channel A. Rail-to-rail input, common-mode range extends 100 mV beyond each supply rail.
4 V- power_in Negative (lowest) power supply. Typically ground in single-supply operation, or the negative rail in dual-supply operation. Total supply (V+) - (V-) must be between 1.8 V and 5.5 V.
5 +IN B input Noninverting input of channel B. Rail-to-rail input, common-mode range extends 100 mV beyond each supply rail.
6 -IN B input Inverting input of channel B. Rail-to-rail input, common-mode range extends 100 mV beyond each supply rail. Input current limited to <10 mA if driven beyond rails.
7 OUT B output Output of channel B operational amplifier. Rail-to-rail output, swings within 50 mV of the supply rails.
8 V+ power_in Positive (highest) power supply. 1.8 V to 5.5 V single-supply, or ±0.9 V to ±2.75 V dual-supply. Bypass with 0.1 µF ceramic capacitor to V-.

Key specifications

Parameter Value
Type Dual zero-drift CMOS op-amp
Input offset voltage 10 uV max
Offset drift 0.05 uV/C typ
Gain-bandwidth product 350 kHz typ
Supply voltage 1.8 V to 5.5 V
Supply current 17 uA/amp typ
Input/output Rail-to-rail
Operating temperature -40 C to 125 C

Ordering variants

Same part, different packaging or reel option.

  • OPA2333D
  • OPA2333DGK
  • OPA2333DRB

CAD (KiCad official)

  • Symbol: opa2333.kicad_sym
  • Footprint: opa2333.kicad_mod
  • 3D model: SOIC-8 body from KiCad Package_SO/SOIC-8_3.9x4.9mm_P1.27mm.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (49 pp, sha256 df60da7154848c57, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF