Renesas Electronics Corporation
Search

ISL28291

Active

Dual Single Supply Ultra-Low Noise, Low Distortion Rail-to-Rail Output, Op Amp

Order Now

Overview

The ISL28291 is a tiny, dual, ultra-low noise, ultra-low distortion operational amplifier. It is fully specified to operate down to +3V single supply. This amplifier has outputs that swing rail-to-rail and an input common mode voltage that extends to ground (ground sensing). The device is unity gain stable with an input referred voltage noise of 1.7nV/√Hz. Both parts feature 0.00018% THD+N at 1kHz. The ISL28291 is available in the 8 Ld SOIC, 10 Ld 1.8mm x 1.4mm UTQFN and 10 Ld MSOP packages. All devices are guaranteed over -40 °C to +125 °C.

ISL28191_ISL28291 Functional Diagram
ISL28191_ISL28291 Functional Diagram
  • 1.7nV/√Hz input voltage noise at 1kHz
  • 1kHz THD+N typical 0.00018% at 2VP-P VOUT
  • Harmonic Distortion -76dBc, -70dBc, fo = 1MHz
  • 61MHz -3dB bandwidth
  • 630µV maximum offset voltage
  • 3µA input bias current
  • 100dB typical CMRR
  • 3V to 5.5V single supply voltage range
  • Rail-to-rail output
  • Ground sensing
  • Enable pin (not available in the 8 Ld SOIC package option)
  • Pb-free (RoHS compliant)

Documentation

Design & Development

ECAD Models

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

Explore ECAD Models
Diagram of ECAD Models

Models
Type Title Date
Model - SPICE
isl28191
TXT 5 KB
1 item

Product Options

Applied Filters:

Support

Support Communities

Support Communities

Get quick technical support online from Renesas Engineering Community technical staff.
Get Support
Browse FAQs

FAQs

Browse our knowledge base of common questions and answers.
Browse FAQs
Submit a Ticket

Submit a Ticket

Need to ask a technical question or share confidential information?
Submit Ticket

FAQs

  1. What is the input voltage / gain linearity for ISL28291?

    Question: What is the input voltage / gain linearity? We would like to see how low we can go to 0V before the gain is no longer linear. Supply voltage is single 3.3V. Do we have any data about this?   Answer:  See attached spreadsheet for the raw test data ...

    Jan 1, 1970
  2. About Renesas Industrial Measurement Equipment Solutions

    Renesas introduces a wide range of products for industrial measurement equipment such as microcontroller products, sensors, operational amplifiers, power supply ICs and communication drivers. Recommended products are introduced on the solution website for each of the typical application equipments, so please refer to them.

    Apr 5, 2021