MAX9812H, MAX9812L

Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain Microphone Amplifiers with Integrated Bias

Industry's Smallest, Low-Noise, Low-Power Microphone Amplifiers with Integrated Bias

Please check latest availability status for a specific part variant.


The MAX9812/MAX9813 are single/dual-input, 20dB fixed-gain microphone amplifiers. They offer tiny packaging and a low-noise, integrated microphone bias, making them ideal for portable audio applications such as notebook computers, cell phones, and PDAs. These amplifiers feature a 500kHz bandwidth, rail-to-rail outputs, an industry-leading 100dB power-supply rejection ratio, and a very low 0.015% THD+N. Power-saving features include very low 230µA supply current and a total shutdown mode that cuts the combined supply and BIAS currents to only 100nA.

The MAX9812 is a single amplifier in a 6-pin SC70 package (2mm x 2.1mm) and the MAX9813 is a dual-input amplifier available in an 8-pin SOT23 (3mm x 3mm) package. The MAX9813 has two inputs allowing two microphones to be multiplexed to a single output.

The MAX9812/MAX9813 are offered in two grades. The MAX9812L/MAX9813L are optimized for 3.3V supply operation (2.7V to 3.6V). The MAX9812H/MAX9813H are PC2001 compliant and are optimized for 5V operation (4.5V to 5.5V). Both devices are specified over the -40°C to +85°C extended operating temperature range.
MAX9812, MAX9812H, MAX9812L, MAX9813, MAX9813H, MAX9813L: Typical Operating Circuit MAX9812, MAX9812H, MAX9812L, MAX9813, MAX9813H, MAX9813L: Typical Operating Circuit Enlarge+

Key Features

  • PC2001 Compliant
  • 100dB at 217Hz Power-Supply Rejection Ratio
  • Very Low 230µA Quiescent Current
  • Low 0.015% THD+N
  • Available in Two Versions
    • MAX9812L/MAX9813L—2.7V to 3.6V
    • MAX9812H/MAX9813H—4.5V to 5.5V
  • Internal Low-Noise Microphone Bias Supply
    • 2.3V for MAX9812L/MAX9813L
    • 4.0V for MAX9812H/MAX9813H
  • 100nA Low-Power Shutdown Mode
  • Rail-to-Rail Outputs
  • 20dB Fixed Gain
  • Available in Tiny 6-Pin SC70 (2mm x 2.1mm) and 8-Pin SOT23 (3mm x 3mm) Packages
  • Extended Temperature Range -40°C to +85°C


  • Car Kit Adapters
  • Digital Cameras
  • Notebook Computers
  • PDAs
  • Smartphones
  • Video Tape Recorders
Part NumberChannelsVSUPPLY
Input TypeExt. GainFxd. Gain
Fxd. Gain
Microphone BiasPackage/PinsBudgetary
minmaxtypminminmaxSee Notes
MAX9813H EndedNo1010Yes
$0.48 @1k
See All Microphone Amplifiers (10)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

Request Reliability Report for: MAX9812H  MAX9812L 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Topmark Coding MAX9812H
Topmark Coding MAX9812L

CAD Symbols and Footprints

  • MAX9812HEXT+
  • MAX9812HEXT+T
  • MAX9812HEXT-T
  • MAX9812LEXT+
  • MAX9812LEXT+T
  • MAX9812LEXT-T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    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.

    Quality Management System >
    Environmental Management System >


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