Single/Dual/Quad, General-Purpose, Low-Voltage, Rail-to-Rail Output Op Amps

Please check latest availability status for a specific part variant.


The LMX321/LMX358/LMX324 are single/dual/quad, low-cost, low-voltage, pin-to-pin compatible upgrades to the LMV321/LMV358/LMV324 family of general purpose op amps. These devices offer rail-to-rail outputs and an input common-mode range that extends below ground. These op amps draw only 105µA of quiescent current per amplifier, operate from a single +2.3V to +7V supply, and drive 2kΩ resistive loads to within 40mV of either rail. The LMX321/LMX358/LMX324 are unity-gain stable with a 1.3MHz gain-bandwidth product capable of driving capacitive loads up to 400pF. The combination of low voltage, low cost, and small package size makes these amplifiers ideal for portable/battery-powered equipment.

The LMX321 single op amp is available in ultra-small 5-pin SC70 and space-saving 5-pin SOT23 packages. The LMX358 dual op amp is available in the tiny 8-pin SOT23 or the 8-pin µMAX® package. The LMX324 quad op amp is available in 14-pin TSSOP and SO packages.
LMX321, LMX324, LMX358: Pin Configurations LMX321, LMX324, LMX358: Pin Configurations Enlarge+

Key Features

  • Upgrade to LMV321/LMV358/LMV324 Family
  • Single +2.3V to +7V Supply Voltage Range
  • Available in Space-Saving Packages
    • 5-Pin SC70 (LMX321)
    • 8-Pin SOT23 (LMX358)
    • 14-Pin TSSOP (LMX324)
  • 1.3MHz Gain-Bandwidth Product
  • 105µA Quiescent Current per Amplifier (VCC = +2.7V)
  • No Phase Reversal for Overdriven Inputs
  • No Crossover Distortion
  • Rail-to-Rail Output Swing
  • Input Common-Mode Voltage Range: VEE - 0.2V to VCC - 0.8V
  • Drives 2kΩ Resistive Loads


  • Active Filters
  • Automotive Sensors
  • Base Station/Wireless Infrastructure
  • Cell Phones
  • Computers: Desktops, Workstations, and Servers
  • Computers: Motherboards
  • Computers: Notebook
  • Cordless Phones
  • GPS Solutions
  • Laptop Computers
  • Low-Power, Low-Voltage Applications
  • MP3 Docking Stations: Mid Level
  • Portable Battery-Powered Equipment
  • Programmable Logic Controllers (PLCs)
  • Set-Top Boxes
Product Reliability Reports: LMX321.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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