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2.2W Stereo Audio Power Amplifier with Analog Volume Control

High PSRR, Low 0.01% Total Harmonic Distortion (THD)

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Class AB, 2.2W, Stereo BTL Speaker Amplifiers
  • Analog Volume Control
  • BEEP Input with Glitch Filter
  • 5V Single-Supply Operation
  • High 90dB PSRR
  • Low-Power Shutdown Mode
  • Industry-Leading Click-and-Pop Suppression
  • Low 0.01% THD+N at 1kHz
  • Short-Circuit and Thermal Protection
  • Selectable-Gain Settings
  • Space-Saving 28-Pin TQFN (5mm x 5mm x 0.8mm)

Applications/Uses

  • Flat-Panel TVs
  • LCD Projectors
  • Multimedia Monitors
  • Notebook PCs
  • PC Displays
  • Portable DVD Players
  • Tablet PCs

Description

The MAX9787 combines a stereo, 2.2W audio power amplifier with an analog volume control in a single device. A high 90dB PSRR and low 0.01% THD+N ensures clean, low-distortion amplification of the audio signal.

The analog volume control can be driven with a potentiometer, an RC-filtered PWM source, or a DAC output. A BEEP input allows the addition of alert signals from the controller to the audio path.

Industry-leading, click-and-pop suppression eliminates audible transients during power and shutdown cycles. Other features include single-supply voltage, a shutdown mode, logic-selectable gain, thermal-overload, and output short-circuit protection.

The MAX9787 is offered in a space-saving, thermally efficient, 28-pin thin QFN (5mm x 5mm x 0.8mm) package, and is specified over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX9787: Typical Operating Circuit MAX9787: Typical Operating Circuit Zoom icon

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 .