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High precision 5 uV zero drift, low-power single op amp
  • active Active

The OA1ZHA, OA2ZHA, OA4ZHA series of low power, high precision op amp, offer very low input offset voltages with virtually zero drift.

OA1ZHA, OA2ZHA, OA4ZHA are respectively the single, dual and quad operational amplifier versions, with pinout compatible with industry standards.

The OA1ZHA, OA2ZHA, OA4ZHA series offers rail-to-rail input and output, excellent speed/power consumption ratio, and 400 kHz gain bandwidth product, while consuming less than 40 μA at 5 V. All devices also feature an ultra-low input bias current.

The OA1ZHA, OA2ZHA, OA4ZHA family is the ideal choice for wearable, fitness and healthcare applications.

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Errata Sheet
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Key Features

  • Very high accuracy and stability: offset voltage 5 μV max at 25°C, 8 μV over full temperature range (-40°C to 125°C)
  • Rail-to-rail input and output
  • Low supply voltage: 1.8 - 5.5 V
  • Low power consumption: 40 μA max. at 5 V
  • Gain bandwidth product: 400 kHz
  • High tolerance to ESD: 4 kV HBM
  • Extended temperature range: -40 to +125°C
  • Micro-packages: SC70-5, DFN8 2x2, and QFN16 3x3

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS10205: High precision 5 µV zero drift, low-power op amp
1.0 750 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
Op Amp Library - all ST op amps SPICE models (.subckt) in only one file
1.0 340 KB

Presentations & Training Material


Description Version Size
Health and Wellness Mobility Cloud computing
1,347 KB
ST offering in Wearable - Analog and Mixed Signal Portfolio
3.0 1,508 KB
VMA automotive applications
1,366 KB
What does precision mean for an op amp?
1,173 KB

Publications and Collaterals


Description Version Size
Analog ICs for wearable devices
2.0 981 KB
Products and Solutions for Factory Automation and Control
Jan 2015 3,105 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
OA1ZHA22CActiveSC70-5Tape And Reel-40125_Free Samples.95Distributor reported inventory date: 2015-10-13
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
Farnell Element14Order NowEUROPE30001

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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