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2.2W, Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers

Product Details

Key Features

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Key Features

  • PC2001 Compliant
  • 2.2W Class D Stereo Speaker Amplifier
  • Pin-for-Pin Compatible with Class AB MAX9750/MAX9751/MAX9755
  • 85% Efficiency (RL = 8Ω, POUT = 1W)
  • 62mW DirectDrive Headphone Amplifier
  • High PSRR (70dB at 1kHz)
  • Analog Volume Control (MAX9752)
  • Beep Input with Glitch Filter (MAX9752)
  • 2:1 Stereo Input MUX (MAX9753)
  • ±8kV ESD-Protected Headphone Outputs
  • No Output DC-Blocking Capacitors
  • Industry-Leading Click-and-Pop Suppression

Applications/Uses

  • Flat-Panel TVs
  • LCD Projectors
  • Notebook PCs
  • PC Displays
  • Portable DVDs
  • Tablet PCs

Description

The MAX9752/MAX9753/MAX9754 combine a high-efficiency, filterless, stereo Class D audio power amplifier with a DirectDrive® headphone amplifier in a single device. The Class D amplifier operates from a single 4.5V to 5.5V supply and provides 2.2W per channel into a 4Ω load. The headphone amplifier operates from a single 3V to 5.5V supply, and uses Maxim's DirectDrive architecture to produce a ground-referenced output from a single supply.

The MAX9754 features a Class D stereo speaker amplifier and headphone driver. The MAX9752 adds an analog volume control and a BEEP input. The MAX9753 adds a stereo 2:1 input multiplexer. All devices feature logic-selectable gain, and a headphone sense input that detects the presence of a headphone.

The MAX9752/MAX9753/MAX9754 come in 28-pin thin QFN (5mm x 5mm x 0.8mm) packages, and are specified over the extended -40°C to +85°C temperature range. For a pin-for-pin-compatible Class AB version of these devices, refer to the MAX9750/MAX9751/MAX9755 data sheet.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .