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MAX9701

Maxim Integrated Products
Part Number MAX9701
Manufacturer Maxim Integrated Products
Description 1.3W Filterless Stereo Class D Audio Power Amplifier
Published Mar 6, 2010
Detailed Description 19-3608; Rev 0; 6/05 www.DataSheet4U.com 1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stere...
Datasheet PDF File MAX9701 PDF File

MAX9701
MAX9701

Overview
19-3608; Rev 0; 6/05 www.
DataSheet4U.
com 1.
8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone Amplifier General Description The MAX9702 combines a highly efficient Class D speaker amplifier with a high-linearity Class AB headphone amplifier.
This ensures maximum battery life in speaker mode and maximum performance in headphone mode.
The MAX9702 delivers up to 1.
8W per channel into an 8 Ω load from a 5V power supply.
Maxim’s 2nd-generation, spread-spectrum modulation scheme renders the traditional Class D output filter unnecessary.
The MAX9702 speaker amplifier offers two modulation schemes: a fixed-frequency (FFM) mode and a spreadspectrum (SSM) mode that reduces EMI-radiated emissions.
The MAX9702 speaker amplifier features a fully differential architecture, full-bridged (BTL) output, and comprehensive click-and-pop suppression.
The MAX9702 speaker amplifier features high 75dB PSRR, low 0.
07% THD+N, and SNR in excess of 97dB.
Shortcircuit and thermal-overload protection prevent the device from being damaged during a fault condition.
The headphone amplifier uses Maxim’s patented DirectDriveTM architecture that produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, board space, and component height.
A high 80dB PSRR and low 0.
02% THD+N ensures clean, low-distortion amplification of the audio signal.
An I2C interface sets the speaker and headphone gain, mono, stereo, and mute functions.
The MAX9702 is available in 28-pin thin QFN-EP (5mm x 5mm x 0.
8mm) and 28-pin TSSOP packages.
The MAX9702 is specified over the extended -40°C to +85°C temperature range.
Features ♦ Patented Spread-Spectrum Modulation Reduces EMI Emissions ♦ Programmable Mono, Stereo, Mute, and Mix Functions ♦ 1.
1W Stereo Output (8Ω, VDD = 5V) ♦ 48mW Headphone Output (32Ω, VDD = 3.
3V) ♦ 95% Efficiency (RL = 8Ω, PO = 1.
1W) ♦ High 73dB PSRR (f = 217Hz) ♦ I2C Programmable Gain Up to +21dB ♦ Integr...


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