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  • The OA1ZHA, OA2ZHA, OA4ZHA series of low-power, high-precision op amps offers very low input offset voltages with virtually zero drift.

    OA1ZHA, OA2ZHA, OA4ZHA are respectively the single, dual and quad op amp 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.

    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

Development Tools

    • Part Number

      Operational amplifier and comparator application for smartphones and tablets

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS10205
      High precision 5 µV zero drift, low-power op amps
      3.0
      2.09 MB
      PDF
      DS10205

      High precision 5 µV zero drift, low-power op amps

    • Description Version Size Action
      How to Extend the Performance of a Low Voltage Precision Op Amp to a High Voltage High Side Current Sensing Application 1.0
      473.64 KB
      PDF

      How to Extend the Performance of a Low Voltage Precision Op Amp to a High Voltage High Side Current Sensing Application

    • Description Version Size Action
      UM0065
      MACROMODELS USER MANUAL FOR STANDARD LINEAR PRODUCTS
      1.0
      120.84 KB
      PDF
      UM0065

      MACROMODELS USER MANUAL FOR STANDARD LINEAR PRODUCTS

    • Description Version Size Action
      DT0073
      Optical heart rate monitoring – OHRM based on X-NUCLEO-IKA01A1 expansion board
      1.0
      1.11 MB
      PDF
      DT0073

      Optical heart rate monitoring – OHRM based on X-NUCLEO-IKA01A1 expansion board

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      ST library for all op amps and comparators SPICE models 4.0
      51.6 KB
      ZIP

      ST library for all op amps and comparators SPICE models

Presentations & Training Material

    • Description Version Size Action
      Health and Wellness Mobility Cloud computing
      1.32 MB
      PDF
      ST Analog Products for Automotive applications 11.2017
      2.05 MB
      PDF
      ST offering in Wearable - Analog and Mixed Signal Portfolio 3.0
      1.47 MB
      PDF
      What does precision mean for an op amp?
      1.15 MB
      PDF

      Health and Wellness Mobility Cloud computing

      ST Analog Products for Automotive applications

      ST offering in Wearable - Analog and Mixed Signal Portfolio

      What does precision mean for an op amp?

Publications and Collaterals

    • Description Version Size Action
      ST Analog cards High-performance operational amplifiers and comparators, the best choice for longevity, robustness and performance. 1.0
      818.4 KB
      PDF

      ST Analog cards High-performance operational amplifiers and comparators, the best choice for longevity, robustness and performance.

    • Description Version Size Action
      Amplifiers & Comparators - Broaden Your Horizons 1.0
      2.55 MB
      PDF
      Operational Amplifiers (Op Amps) - Quick Reference Guide 2.0
      2.76 MB
      PDF
      Products and solutions for Smart industry 3.0
      2.99 MB
      PDF

      Amplifiers & Comparators - Broaden Your Horizons

      Operational Amplifiers (Op Amps) - Quick Reference Guide

      Products and solutions for Smart industry

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
OA2ZHA22Q
Active
DFN8 2x2 Industrial Ecopack3
OA2ZHA34S
Active
MiniSO-8 Industrial Ecopack3

OA2ZHA22Q

Package:

DFN8 2x2

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN8 2x2

Grade

Industrial

RoHS Compliance Grade

Ecopack3

OA2ZHA34S

Package:

MiniSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MiniSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com 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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
OA2ZHA34S Available at 2 distributors

Distributor availability ofOA2ZHA34S

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1177 1 Order Now
MOUSER WORLDWIDE 3888 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

1177

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3888

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

Sample & Buy Buy now
Active
EAR99 NEC Tape And Reel MiniSO-8 -40 125 PHILIPPINES 1.24 / 1k
OA2ZHA22Q Available at 4 distributors

Distributor availability ofOA2ZHA22Q

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2565 1 Order Now
P&S ASIA/PACIFIC 180 1 Order Now
MOUSER WORLDWIDE 3420 1 Order Now
Farnell Element14 EUROPE 2104 1 Order Now

Distributor reported inventory date: 2020-08-04

Distributor Name

DIGIKEY

Stock

2565

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

180

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

3420

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2104

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-04

Sample & Buy Buy now
Active
EAR99 NEC Tape And Reel DFN8 2x2 -40 125 CHINA 1.24 / 1k

OA2ZHA34S

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.24 / 1k

Distributor availability ofOA2ZHA34S

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1177 1 Order Now
MOUSER WORLDWIDE 3888 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

1177

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3888

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

MiniSO-8

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

1.24 / 1k

Country of Origin

PHILIPPINES

OA2ZHA22Q

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.24 / 1k

Distributor availability ofOA2ZHA22Q

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2565 1 Order Now
P&S ASIA/PACIFIC 180 1 Order Now
MOUSER WORLDWIDE 3420 1 Order Now
Farnell Element14 EUROPE 2104 1 Order Now

Distributor reported inventory date: 2020-08-04

Distributor Name

DIGIKEY

Stock

2565

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

180

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

3420

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2104

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-04

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN8 2x2

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

1.24 / 1k

Country of Origin

CHINA

(*) 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