The ISL28133 is a single micropower, chopper stabilized operational amplifier that is optimized for single supply operation from 1. 8V to 5. 5V. Its low supply current of 18µA and wide input range enable the ISL28133 to be an excellent general purpose op amp for a range of applications. The ISL28133 is ideal for handheld devices that operate off 2 AA or single Li-ion batteries. The ISL28133 is available in the 5 Ld SOT-23, the 5 Ld SC70 and the 6 Ld 1. 6mmx1. 6mm µTDFN packages. All devices operate over the extended temperature range of -40°C to +125°C.


  • Low input offset voltage: 8µV, Max.
  • Low offset TC: 0.075µV/°C, Max
  • Input bias current: 300pA, Max.
  • Quiescent current: 18µA, Typ.
  • Wide supply range: 1.8V to 5.5V
  • Low noise (0.01Hz to 10Hz): 1.1µVP-P, Typ.
  • Rail-to-rail inputs and output
  • Operating temperature range: -40°C to +125°C


  • Bidirectional current sense
  • Temperature measurement
  • Medical equipment
  • Electronic weigh scales

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SC70 Reel 3000
Active SOT23 Reel 3000
Active SOT23 Reel 250

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL28133 Datasheet Datasheet PDF 2.29 MB
User Guides & Manuals
ISL28133ISENSEV1Z User Guide Manual PDF 537 KB
ISL28133EVAL1Z User Guide Manual PDF 420 KB
Application Notes & White Papers
How to Bias Op-Amps Correctly Application Note PDF 263 KB
AN1993: Voltage Feedback versus Current Feedback Operational Amplifiers Application Note PDF 564 KB
AN1548: Designer's Manual for the iSim Active Filter Designer Application Note PDF 8.19 MB
AN1685: Development of a Voltage Feedback Spice Op-Amp Macromodel Application Note PDF 619 KB
AN1827: High-Side, High Current Sensing Techniques Application Note PDF 419 KB
AN1561: Radiated Interference in Audio Circuits Application Note PDF 556 KB
AN1556: Building an Accurate SPICE Model for Low Noise, Low Power Precision Amplifiers Application Note PDF 976 KB
AN1613: From SPICE Netlist to Allegro Design Sub-Circuit Application Note PDF 1.02 MB
AN1560: Making Accurate Voltage Noise and Current Noise Measurements on Operational Amplifiers Down to 0.1Hz Application Note PDF 2.04 MB
AN1694: The Four Basic Building Blocks of an Op Amp Application Note PDF 357 KB
AN535: Design Considerations for a Data Acquisition System (DAS) Application Note PDF 843 KB
PCN13022 - Alternate Manufacturing Site for Assembly of the Listed Intersil SOT23 Packaged Products - Carsem (CAM) Ipoh, Malaysia Product Change Notice PDF 557 KB
PCN12091 - QSOP and SC-70 from Unisem to CAM as alternate assembly site Product Change Notice PDF 529 KB
PCN12084 - Manufacturing Site Change for the Listed Intersil Products - Carsem (CAS) Ipoh Malaysia Product Change Notice PDF 135 KB
PCN11073 - Data Sheet Specification Change for Intersil Product ISL28133* Product Change Notice PDF 79 KB
ISL28133, ISL28233, ISL28433 Macromodel Model TXT 5 KB
TB514: Operational Amplifier Basics Other PDF 519 KB
General-purpose operational amplifiers and comparators Pamphlet Flyer PDF 1.11 MB

Boards & Kits

Part Number Title Type Company
Beverage-Coaster-Reference-Design Beverage Coaster Reference Design Featuring Renesas Synergy MCUs and Renesas Power Modules Reference
ISL28130ISENSEV1Z Low-Side, Bidirectional, Precision Current Sense Op Amp Evaluation Board Evaluation
ISL28133CSENSEV1Z Low-Side, Bidirectional, Precision Current Sense Op Amp Evaluation Board Evaluation
ISL28133EVAL1Z Single Micropower, Chopper Stabilized, RRIO Op Amp Evaluation Board Evaluation
ISL28133ISENSEV1Z Low-Side, Bidirectional, Precision Current Sense Op Amp Evaluation Board Evaluation
ISL28134ISENSEV1Z Low-Side, Bidirectional, Precision Current Sense Op Amp Evaluation Board Evaluation
Pet-Activity-Monitor-Reference-Design Reference Design to Monitor Pet Activity and Sound Featuring the Renesas Synergy™ S3A3 MCU Reference