MAX9879

Obsolete

Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier

Industry's Smallest Size, Highest D-Class Output Power and Best-in-Class RF Susceptibility (TDMA Noise Free)

Data Sheet (Rev. 11)
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Part Details

  • Better than 9dB Margin Under EN 55022 Class B Limits with No Filter Components
  • Low RF Susceptibility Design Rejects TDMA Noise from GSM Radios
  • Input Mixer with User Defined Input Mode
  • Stereo 715mW Speaker Output (RL = 8Ω, VDD = 3.7V)
  • Stereo 58mW Headphone Output (16Ω, VDD = 3.7V)
  • Low 0.04% THD+N at 1kHz (Class D Power Amplifier)
  • Low 0.018% THD+N at 1kHz (Headphone Amplifier)
  • 88% Efficiency (RL = 8Ω, POUT = 750mW)
  • 1.6Ω Analog Switch for Speaker Amplifier Bypass
  • High Speaker Amplifier PSRR (72dB at 217Hz)
  • High Headphone Amplifier PSRR (84dB at 217Hz)
  • I²C Control
  • Hardware and Software Shutdown Mode
  • Ultra-Low Click and Pop
  • Robust Design with Current and Thermal Protection
  • Available in Space-Saving Package
    • 5x6 UCSP (2.5mm x 3mm)
MAX9879
Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier
MAX9879: Simplified Block Diagram
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Documentation

Data Sheet 1

Reliability Data 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Product 1
MAX9775
2 x 1.5W, Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier
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Evaluation Kits

MAX9879EVKIT

Evaluation Kit for the MAX9879

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Features and Benefits

  • 2.7V to 5.5V Single Supply
  • Proven Audio PCB Layout
  • On-Board Microcontroller to Generate I²C Commands
  • USB-PC Connection (Cable Included)
  • PCB Pads for User-Supplied I²C-Compatible Signals
  • PCB Pads for Audio Input and Output Signals
  • Windows 2000/XP- and Windows Vista (32-Bit)-Compatible Software
  • Easy-to-Use, Menu-Driven Software
  • Lead(Pb)-Free and RoHS Compliant
  • Fully Assembled and Tested

Product Details

The MAX9879 evaluation kit (EV kit) is an assembled and tested PCB that evaluates the MAX9879. The MAX9879 is a stereo Class D audio subsystem with DirectDrive® headphone amplifiers communicating over a 2-wire I²C interface. The MAX9879 features user-defined input configuration, input gain, input source, output enable, and volume control. The microcontroller included on the EV kit, connected to the PC through the universal serial bus (USB) port, acts as the I²C master.

The MAX9879 EV kit also includes Windows® 2000/XP- and Windows Vista®-compatible software that provides a simple user interface for exercising the features of the MAX9879. The program is menu driven and offers a graphical user interface (GUI) complete with control buttons. The EV kit comes with the MAX9879ERV+ installed.

Applications

  • Cell Phones
  • Portable Multimedia Players
MAX9879EVKIT
Evaluation Kit for the MAX9879

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