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MAX9879

Maxim Integrated Products
Part Number MAX9879
Manufacturer Maxim Integrated Products
Description Stereo Class D Audio Subsystem
Published Jun 5, 2009
Detailed Description 19-4436; Rev 0; 2/09 KIT ATION EVALU E L B A AVAIL Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier...
Datasheet PDF File MAX9879 PDF File

MAX9879
MAX9879

Overview
19-4436; Rev 0; 2/09 KIT ATION EVALU E L B A AVAIL Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier Features ♦ 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) www.
datasheet4u.
com General Description MAX9879 The MAX9879 combines a high-efficiency stereo Class D audio power amplifier with a stereo capacitor-less DirectDrive® headphone amplifier.
Maxim’s filterless class D amplifiers with active emissions limiting technology provide Class AB performance with Class D efficiency.
The Class D power amplifier delivers up to 715mW from a 3.
7V supply into an 8Ω load with 88% efficiency to extend battery life.
The filterless modulation scheme combined with active emission limiting circuitry and spread-spectrum modulation greatly reduces EMI while eliminating the need for output filtering used in traditional Class D devices.
The headphone amplifier delivers up to 58mW from a 3.
7V supply into a 16 Ω load.
Maxim’s patented DirectDrive architecture produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, space and component height.
The device utilizes a user-defined input architecture, three preamplifier gain settings, an input mixer, volume control, comprehensive click-and-pop suppres...


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