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Maxim > Products > Audio 
MAX9812, MAX9812H, MAX9812L, MAX9813, MAX9813H, MAX9813L
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


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Data Sheet
FULL DATA SHEET (PDF, 320kB)
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Description
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.

Key Features   Applications/Uses
  • 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

    Key Specifications:   Microphone Amplifiers
    Part Number Number of Channels Supply Voltage (min) (V) Supply Voltage (max) (V) Quiescent Supply Current (typ) (mA) THD+N (%) Input Noise-Voltage Density (nV/√Hz) PSRR (db) Input Type External Gain Fixed Gain (min) (|V/V|) Fixed Gain (max) (|V/V|) Microphone Bias RoHS Available Package Price**
    MAX9812H  1 4.5 5.5 0.23 0.015 40 100 Single Ended No 10 10 Yes Yes SC-70/6 $0.38 @ 1k
    MAX9812L  1 2.7 3.6 0.04 SC-70/6 $0.38 @ 1k
    MAX9813H  2 4.5 5.5 0.015 SOT-23/8 $0.48 @ 1k
    MAX9813L  2 2.7 3.6 0.04 SOT-23/8 $0.48 @ 1k
    See All Microphone Amplifiers (17)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Evaluation Kits
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    Design Guides
  		• VIDEO (PDF)
  		• AUDIO (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
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    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-16 of 16

    MAX9812H Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9812HEXT+  
    		SC-70;6 pin;
    Dwg: 21-0077G (PDF)
    Use pkgcode/variation: X6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9812HEXT  
    		SC-70;6 pin;
    Dwg: 21-0077G (PDF)
    Use pkgcode/variation: X6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9812HEXT-T  
    		SC-70;6 pin;
    Dwg: 21-0077G (PDF)
    Use pkgcode/variation: X6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9812HEXT+T  
    		SC-70;6 pin;
    Dwg: 21-0077G (PDF)
    Use pkgcode/variation: X6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9812L Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9812LEXT+  
    		SC-70;6 pin;
    Dwg: 21-0077G (PDF)
    Use pkgcode/variation: X6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9812LEXT  
    		SC-70;6 pin;
    Dwg: 21-0077G (PDF)
    Use pkgcode/variation: X6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9812LEXT+T  
    		SC-70;6 pin;
    Dwg: 21-0077G (PDF)
    Use pkgcode/variation: X6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9812LEXT-T  
    		SC-70;6 pin;
    Dwg: 21-0077G (PDF)
    Use pkgcode/variation: X6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9813H Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9813HEKA  
    		SOT-23;8 pin;
    Dwg: 21-0078H (PDF)
    Use pkgcode/variation: K8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9813HEKA+  
    		SOT-23;8 pin;
    Dwg: 21-0078H (PDF)
    Use pkgcode/variation: K8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9813HEKA+T  
    		SOT-23;8 pin;
    Dwg: 21-0078H (PDF)
    Use pkgcode/variation: K8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9813HEKA-T  
    		SOT-23;8 pin;
    Dwg: 21-0078H (PDF)
    Use pkgcode/variation: K8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9813L Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9813LEKA+  
    		SOT-23;8 pin;
    Dwg: 21-0078H (PDF)
    Use pkgcode/variation: K8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9813LEKA  
    		SOT-23;8 pin;
    Dwg: 21-0078H (PDF)
    Use pkgcode/variation: K8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9813LEKA+T  
    		SOT-23;8 pin;
    Dwg: 21-0078H (PDF)
    Use pkgcode/variation: K8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9813LEKA-T  
    		SOT-23;8 pin;
    Dwg: 21-0078H (PDF)
    Use pkgcode/variation: K8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    More Information
  		• Topmark Coding: MAX9812 MAX9812L MAX9813
  		• New Product Press Release 2003-05-19 

    Related Products
    MAX4063 Differential Microphone Preamplifier with Internal Bias and Complete Shutdown
    MAX4060, MAX4061, MAX4062 Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown
    MAX4465, MAX4466, MAX4467, MAX4468, MAX4469 Low-Cost, Micropower, SC70/SOT23-8, Microphone Preamplifiers with Complete Shutdown

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    Document Ref.: 19-2840; Rev 0; 2003-05-22
    This page last modified: 2007-08-08




             


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