Overview

Features and Benefits

  • 3-Bit Digital Gain Control:
    • (Inverting Gains of 0, 1, 2, 5, 10, 20, 50 and 100V/V) -1  Option
    • (Inverting Gains of 0, 1, 2, 4, 8, 16, 32 and 64V/V) -2 Option
  • Two Matched Programmable Gain Amplifiers
  • Channel-to-Channel Gain Matching of 0.1dB (Max)
  • Rail-to-Rail Input Range
  • Rail-to-Rail Output Swing
  • Single or Dual Supply: 2.7V to 10.5V Total
  • 11MHz Gain Bandwidth Product
  • Input Noise: 10nV/√Hz
  • Total System Dynamic Range to 120dB
  • Input Offset Voltage: 2mV, Gain of 10
  • Low Profile 10-Lead MSOP Package

Product Details

The LTC6911 is a family of low noise digitally programmable gain amplifiers (PGAs) that are easy to use and occupy very little PC board space. The matched gain of both channels is adjustable using a 3-bit parallel interface to select voltage gains of 0, 1, 2, 5, 10, 20, 50 and 100V/ V (LTC6911-1) and 0, 1, 2, 4, 8, 16, 32 and 64V/V (LTC6911-2). All gains are inverting.

The LTC6911 family consists of two matched inverting amplifiers with rail-to-rail outputs. When operated with unity gain, they will also process rail-to-rail input signals. A half-supply reference generated internally at the AGND pin supports single power supply applications. Operating from single or split supplies from 2.7V to 10.5V, the LTC6911 family is offered in a 10-lead MSOP package.

Applications

  • Data Acquisition Systems
  • Dynamic Gain Changing
  • Automatic Ranging Circuits
  • Automatic Gain Control

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LTC6911-1
LTC6911-2

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Discussions

LTC6911 Discussions

Re: LTC6911-2's digital inputs
11 week(s) ago in Amplifiers
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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