ST Life.augmented


Low power, rail-to-rail input and output, CMOS quad op amp
  • active Active

The OA1NP, OA2NP, OA4NP series of CMOS operational amplifiers offer a low power consumption of 580 nA typical and 750 nA maximum per channel when supplied by 1.8 V. Combined with a supply voltage range of 1.5 V to 5.5 V, these features allow the OA1NP, OA2NP, OA4NP op amp series to be efficiently supplied by a coin type Lithium battery or a regulated voltage in low power applications.

The OA1NP, OA2NP, OA4NP are respectively the single, dual and quad operational amplifier versions.

The 8 kHz gain bandwidth of these devices make them ideal for wearable, fitness and healthcare and sensors signal conditioning applications.

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Errata Sheet
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Key Features

  • Low power: 580 nA typ. per channel at 25 °C at VCC= 1.8 V
  • Low supply voltage: 1.5 V - 5.5 V
  • Unity gain stable
  • Rail-to-rail input and output
  • Gain bandwidth product: 8 kHz typ.
  • Low input bias current: 5 pA max at 25 °C
  • High tolerance to ESD: 2 kV HBM
  • Industrial temperature range: -40 °C to +85 °C
  • Benefits
  • 42 years of typical equivalent lifetime (OA1NP) if supplied by a 220 mAh coin type Lithium battery
  • Tolerance to power supply transient drops
  • Accurate signal conditioning of high impedance sensors
  • Fast desaturation

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS10204: Low power, rail-to-rail input and output, CMOS op amp
2.0 859 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
1.0 312 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
Brochure Wearables
0815 6,572 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**
OA4NP33QActiveVFQFPN 16 3x3x0.9Tape And Reel-4085_Free Samples.83Distributor reported inventory date: 2015-12-01
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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