MAX9744
20W Stereo Class D Speaker Amplifier with Volume Control
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Delivers 2 x 20W from 12V Supply into 4Ω Loads
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Features
- Wide 4.5V to 14V Power-Supply Voltage Range
- Filterless Spread-Spectrum Modulation Lowers Radiated RF Emissions from Speaker Cables
- 20W Stereo Output (4Ω, VDD = 12V, THD+N = 10%)
- Integrated Volume Control (I²C or Analog)
- Low 0.04% THD+N
- High 75dB PSRR
- High 93% Efficiency
- Integrated Click-and-Pop Suppression
- Low-Power Shutdown Mode
- Short-Circuit and Thermal-Overload Protection
- Available in a 44-Pin Thin QFN-EP (7mm x 7mm x 0.8mm)
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The MAX9744 20W stereo Class D audio power amplifier provides Class AB amplifier performance with Class D efficiency, conserving board space and eliminating the need for a bulky heatsink. This device features single-supply operation, adjustable gain, shutdown mode, a SYNC output, speaker mute, and industry-leading click-and-pop suppression.
The MAX9744 features a 64-step dual-mode (analog or digital), programmable volume control and mute function. The MAX9744 operates from a 4.5V to 14V single supply and can deliver up to 20W per channel into a 4Ω speaker with a 14V supply.
The MAX9744 offers two modulation schemes: a fixed-frequency modulation mode that allows one of several preset switching frequencies to be selected, and a spread-spectrum modulation mode that helps to reduce EMI-radiated emissions.
The MAX9744 features high 75dB PSRR, low 0.04% THD+N, and SNR in excess of 90dB. Robust short-circuit and thermal-overload protection prevent device damage during a fault condition. The MAX9744 is available in a 44-pin thin QFN-EP (7mm x 7mm x 0.8mm) package and is specified over the extended -40°C to +85°C temperature range.
Applications
- Flat-Panel Televisions
- Multimedia Docking Stations
- PC Speaker Systems
Ask a Question
Submit your question below and we will return the best answer from ADI’s knowledge database:
Search
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Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.
Visit the ADI Support Page
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MAX9744
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Data Sheet 1
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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 |
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| MAX9744ETH+ |
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| MAX9744ETH+T |
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- MAX9744ETH+
- Pin/Package Drawing
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44-LFCSP-7X7X0.75
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- MAX9744ETH+T
- Pin/Package Drawing
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44-LFCSP-7X7X0.75
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
Software & Part Ecosystem
Evaluation Kits 2
MAX9744EVKIT
Evaluation Kit/Evaluation System for the MAX9744
Features and Benefits
- 20W Stereo Output (at 10% THD+N, RL = 4Ω, VCC = 13V)
- Wide Power-Supply Operation (4.5V to 14V)
- Integrated Volume Control (I²C or Stand-Alone Operation)
- Optional Control Through USB
- Proven PCB Layout for Thermal Performance and EMC
- Windows 98SE/2000/XP-Compatible Evaluation Software
- Fully Assembled and Tested
Product Detail
The MAX9744 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains the MAX9744 highly efficient 2 x 20W Class D stereo speaker amplifier. The MAX9744 EV kit also includes Windows® 98SE/2000/XP-compatible software that provides a simple graphical user interface (GUI) for exercising the MAX9744's features.
The MAX9744 evaluation system (EV system) includes a MAX9744 EV kit and a Maxim CMAXQUSB serial-interface board.
The CMAXQUSB board connects to a PC's USB port and allows the transfer of I²C commands to the MAX9744 EV kit.
Applications
- Flat-Panel Televisions
- Multimedia Docking Stations
- PC Speaker Systems
MAX9744EVCMAXQU
Evaluation Kit/Evaluation System for the MAX9744
Features and Benefits
- 20W Stereo Output (at 10% THD+N, RL = 4Ω, VCC = 13V)
- Wide Power-Supply Operation (4.5V to 14V)
- Integrated Volume Control (I²C or Stand-Alone Operation)
- Optional Control Through USB
- Proven PCB Layout for Thermal Performance and EMC
- Windows 98SE/2000/XP-Compatible Evaluation Software
- Fully Assembled and Tested
Product Detail
The MAX9744 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains the MAX9744 highly efficient 2 x 20W Class D stereo speaker amplifier. The MAX9744 EV kit also includes Windows® 98SE/2000/XP-compatible software that provides a simple graphical user interface (GUI) for exercising the MAX9744's features.
The MAX9744 evaluation system (EV system) includes a MAX9744 EV kit and a Maxim CMAXQUSB serial-interface board.
The CMAXQUSB board connects to a PC's USB port and allows the transfer of I²C commands to the MAX9744 EV kit.
Applications
- Flat-Panel Televisions
- Multimedia Docking Stations
- PC Speaker Systems
