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MAX4321
Low-Cost, Low-Voltage, Rail-to-Rail, Input/Output, SOT23 5MHz Op Amp

Low-Voltage, Pin-for-Pin Upgrade for LMC7101


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 224kB)
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The MAX4321 operational amplifier (op amp) combines a 5MHz gain-bandwidth product and excellent DC accuracy with rail-to-rail operation at both the inputs and the output. This device requires only 650µA and operates from either a single +2.4V to +6.5V supply or dual ±1.2V to ±3.25V supplies, although the MAX4321 typically operates down to +1.8V (±0.9V). The MAX4321 remains unity-gain stable with capacitive loads up to 500pF and is capable of driving 250Ω loads to within 200mV of either rail.

With rail-to-rail input common-mode range and output swing, the MAX4321 is ideal for low-voltage, single-supply applications. In addition, low ±1.2mV input offset voltage and high 2V/µs slew rate make this device ideal for signal-conditioning stages for precision, low-voltage data-acquisition systems. The MAX4321 comes in a space-saving 5-pin SOT23 package and is guaranteed over the extended (-40°C to +85°C) temperature range.

The MAX4321 is a low-voltage, pin-for-pin compatible upgrade for the LMC7101 that offers five-times higher bandwidth, two-times faster slew rate, and about half the input voltage noise density.

Key Features   Applications/Uses
  • Low-Voltage, Pin-for-Pin Upgrade for LMC7101
  • Guaranteed +2.4V to +6.5V Single-Supply Operation
  • Typically Operates Down to +1.8V
  • 5MHz Gain-Bandwidth Product
  • 650µA Quiescent Current
  • Rail-to-Rail Common-Mode Input Voltage Range
  • Rail-to-Rail Output Voltage Range
  • Drives 250Ω Loads
  • Unity-Gain Stable for Capacitive Loads up to 500pF
  • No Phase Reversal for Overdriven Inputs
  • Low-Cost Solution in SOT23-5 Package

 
  • Automotive Sensors
  • Base Station/Wireless Infrastructure
  • Battery-Powered Applications
  • Computers: Desktops, Workstations, and Servers
  • Computers: Motherboards
  • Computers: Notebook
  • Data Acquisition
  • General Purpose Low-Voltage Applications
  • GPS Solutions
  • Low-Power, Low-Voltage Applications
  • MP3 Docking Stations: Mid Level
  • Portable Equipment
  • Programmable Logic Controllers (PLCs)
  • Sensor and Signal Conditioning
  • Set-Top Boxes

    Key Specifications:  Operational Amplifiers
    Part Number Amps. Rail to Rail AVCL VSUPPLY (Total)
    (V)
    VSUPPLY (Total)
    (V)
    ICC per Amp.
    (µA)
    ICC per Amp.
    (µA)
    VOS
    (µV)
    CMRR @DC
    (dB)
    PSRR @DC
    (dB)
    Input IBIAS
    (nA)
    Unity Gain BW
    (MHz)
    Slew Rate
    (V/µs)
    en
    (nV/√Hz)
    in
    (pA/√Hz)
    Low Pwr. Shutdn Package/Pins Price
    min min max typ max max typ typ max typ typ See Notes
    MAX4321  1 Input/Output 1 2.4 6.5 650 725 3500 91 100 150 5 2 22 0.4 No
    SOT/5
    $0.48 @1k
    See All Operational Amplifiers (145)

    Diagram
    MAX4321: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-1649; Rev 0; 2000-04-01
    This page last modified: 2009-07-15


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