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Overview

Description

The ISL28148, ISL28248 are 4. 5MHz low-power single and dual operational amplifiers. The parts are optimized for single supply operation from 2. 4V to 5. 5V, allowing operation from one lithium cell or two Ni-Cd batteries. The single and dual feature an Input Range Enhancement Circuit (IREC), which enables them to maintain CMRR performance for input voltages greater than the positive supply. The input signal is capable of swinging 0. 25V above the positive supply and to 100mV below the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail. The parts draw minimal supply current (900μA per amplifier) while meeting excellent DC accuracy, AC performance, noise and output drive specifications. The ISL28148 features an enable pin that can be used to turn the device off and reduce the supply current to a maximum of 16μA. Operation is guaranteed across the -40°C to +125°C temperature range.

Features

  • 4.5MHz gain bandwidth product
  • 900µA supply current (per amplifier)
  • 1.8mV maximum offset voltage (ISL28248)
  • 1pA typical input bias current
  • Down to 2.4V single supply operation
  • Rail-to-rail input and output
  • Enable pin (ISL28148 SOT-23 package only)
  • -40°C to +125°C operation
  • Pb-free (RoHS compliant)

Comparison

Applications

  • Low-end audio
  • 4mA to 20mA current loops
  • Medical devices
  • Sensor amplifiers
  • ADC buffers
  • DAC output amplifiers

Documentation

Design & Development

Boards & Kits

Models

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.

Diagram of ECAD Models