Overview

Support is limited to customers who have already adopted these products.

The ISL28176, ISL28276 and ISL28476 are single, dual and quad channel micropower operational amplifiers optimized for single supply operation over the 2. 4V to 5V range. They can be operated from one lithium cell or two Ni-Cd batteries. These devices feature an Input Range Enhancement Circuit (IREC) which enables them to maintain CMRR performance for input voltages 10% above the positive supply rail and down to the negative supply. The output operation is rail-to-rail. The ISL28276 and ISL28476 draw minimal supply current while meeting excellent DC-accuracy, AC-performance, noise and output drive specifications. The ISL28276 (QSOP package only) contains a power-down enable pin that reduces the power supply current to typically 4µA in the disabled state.

ISL28276_ISL28476 Functional Diagram
ISL28276_ISL28476 Functional Diagram
  • Low power 120µA typical supply current (ISL28276)
  • 100µV maximum offset voltage
  • 500pA typical input bias current
  • 400kHz typical gain-bandwidth product
  • 115dB typical PSRR and CMRR
  • Single supply operation down to 2.4V
  • Input is capable of swinging above V+ and to V- (ground sensing)
  • Rail-to-rail input and output (RRIO)
  • Pb-free (RoHS compliant)

Applications

  • Battery- or solar-powered systems
  • 4mA to 25mA current loops
  • Handheld consumer products
  • Medical devices
  • Thermocouple amplifiers
  • Photodiode pre-amps
  • pH probe amplifiers

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    Buy / Sample
    Part Number
    ISL28276FBZ
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    memory
    view_in_ar
    		SOICN Tube 194
    ISL28276FBZ-T7
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    memory
    view_in_ar
    		SOICN Reel 1000
    ISL28276IAZ
    circleObsolete
    memory
    view_in_ar
    		QSOP Tube 97
    ISL28276IAZ-T7
    circleObsolete
    memory
    view_in_ar
    		QSOP Reel 1000
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