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MAX9744 Datasheet

MAX9744 Datasheet

20W Stereo Class D Speaker Amplifier with Volume Control
Part No.: MAX9744
Page: 28 Pages
Size: 571 KB
Manufacturer: Maxim Integrated
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Views: 1
Update Time: 2024-12-31 10:56:09
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MAX9744 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
MAX9744ETH+ Tube 43 MAX9744ETH 1 44 -40°C ~ 85°C 44-LFCSP-7X7X0.75  
MAX9744ETH+T Reel 2500 MAX9744ETH 1 44 -40°C ~ 85°C 44-LFCSP-7X7X0.75  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

MAX9744 Datasheet(PDF)

MAX9744 Datasheet(Picture)

MAX9744 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)

MAX9744 Applications

  • Flat-Panel Televisions
  • Multimedia Docking Stations
  • PC Speaker Systems

MAX9744 Description

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.

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