The ISL28325 and ISL28345 are dual and quad general purpose amplifiers featuring low noise vs power consumption. The combination of low noise and small footprint provides the user with outstanding value and flexibility relative to similar competitive parts. Applications for this amplifier include active filters, medical and analytical instrumentation, power supply controls, and industrial controls. The ISL28325 is offered in 8 Ld SOIC and MSOP packages and the ISL28345 is offered in the 14 Ld SOIC package and operates over the -40°C to +125°C temperature range.


  • Input Offset Voltage: 1mV, Max.
  • Input Bias Current: ±5nA, Max.
  • Low Current Consumption: 500µA
  • Voltage Noise: 9nV/Hz
  • Wide Supply Range: 4.5V to 40V
  • Operating Temperature Range: -40°C to +125°C
  • Pb-Free (RoHS Compliant)


  • Analytical Instrumentation
  • Medical Instrumentation
  • Spectral Analysis Equipment
  • Active Filter Blocks
  • Thermocouples and RTD Reference Buffers
  • Data Acquisition
  • Power Supply Control

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOICN Tube 1960
Active SOICN Reel 2500
Active SOICN Reel 2000
Active SOICN Reel 250
Active MSOP Tube 1960
Active MSOP Reel 2500
Active MSOP Reel 2000
Active MSOP Reel 250

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL28325, ISL28345 Datasheet Datasheet PDF 661 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
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
PCN12085B - Alternate Manufacturing Site for Assembly of the Listed Intersil SOIC Packaged Products - update to remove select products Product Change Notice PDF 372 KB
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP) Product Change Notice PDF 98 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
PCN12084 - Manufacturing Site Change for the Listed Intersil Products - Carsem (CAS) Ipoh Malaysia Product Change Notice PDF 135 KB
isl28325-45-model Model TXT 4 KB
TB514: Operational Amplifier Basics Other PDF 519 KB
General-purpose operational amplifiers and comparators Pamphlet Flyer PDF 1.11 MB