MAX9742

PRODUCTION

Single-/Dual-Supply, Stereo 16W, Class D Amplifier with Differential Inputs

High-Efficiency Class D Amplifier Drives 4Ω Loads with 87% Efficiency, 8Ω Loads with 92% Efficiency

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.90

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Part Details

2 x 16W Output Power (R_L = 4Ω, THD+N = 10%)
High Efficiency: Up to 92% with R_L = 8Ω
Mute and Shutdown Modes
Differential Inputs Suppress Common-Mode Noise
Adjustable Gain
Integrated Click-and-Pop Suppression
Low 0.06% THD+N at 3.5W, R_L = 8Ω
Output Short-Circuit and Thermal Protection
Available in Space-Saving, 6mm x 6mm, 36-Pin TQFN Package

Part Models: 2
1ku List Price: Starting From $1.90

Documentation

Data Sheet 1

MAX9742: Single-/Dual-Supply, Stereo 16W, Class D Amplifier with Differential Inputs Data Sheet (Rev.0) 02/13/2007

Technical Articles 3

Avoid Overvoltage Stresses by Minimizing Power-Supply Pumping on Single-Ended Output, Class D Audio Amplifiers 04/16/2010

Class D Amplifiers: Fundamentals of Operation and Recent Developments 01/31/2007

Thermal Considerations for a Class D Amplifier 08/16/2006

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX9742ETX+	36-LFCSP-6X6X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX9742ETX+T	36-LFCSP-6X6X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Evaluation Kits

Evaluation Kit for the MAX9742

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Features and Benefits

20V to 40V Single DC Power-Supply Operation
Single-Ended or Fully Differential Inputs
Single-Ended Outputs
Drives 2 x 20W into 8Ω Speakers at 36V
Drives 2 x 10W into 4Ω Speakers at 24V
Shutdown and Mute Control
Evaluates the MAX9742 in 36-Pin TQFN-EP Package
Fully Assembled and Tested

Product Details

The MAX9742 evaluation kit (EV kit) is a fully assembled and tested PCB that configures the MAX9742 Class D amplifier to drive 2 x 20W into a pair of 8Ω speakers for audio applications. The EV kit operates from a 20V to 40VDC power supply. The EV kit is configured for a +26dB gain. The MAX9742 EV kit accepts single-ended or differential input signals, and provides a pair of single-ended outputs.

The MAX9742 EV kit provides a shutdown input pad to control the shutdown mode of the MAX9742. The shutdown mode reduces power consumption and extends battery life. The EV kit also provides a mute input pad to control the mute mode of the MAX9742. The EV kit includes convenient audio input and output connectors, and the required output filters to ease evaluation.

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