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MAX9709

Maxim Integrated Products
Part Number MAX9709
Manufacturer Maxim Integrated Products
Description 25W/50W Filterless Spread-Spectrum Stereo/Mono Class D Amplifier
Published Mar 6, 2010
Detailed Description 19-3769; Rev 0; 9/05 KIT ATION EVALU E L B A IL AVA www.DataSheet4U.com 25W/50W, Filterless, Spread-Spectrum, Stereo/...
Datasheet PDF File MAX9709 PDF File

MAX9709
MAX9709

Overview
19-3769; Rev 0; 9/05 KIT ATION EVALU E L B A IL AVA www.
DataSheet4U.
com 25W/50W, Filterless, Spread-Spectrum, Stereo/Mono, Class D Amplifier General Description The MAX9709 stereo/mono, Class D audio power amplifier delivers up to 2 x 25W into an 8Ω stereo mode and 1 x 50W into a 4Ω load in mono mode while offering up to 87% efficiency.
The MAX9709 provides Class AB amplifier performance with the benefits of Class D efficiency, eliminating the need for a bulky heatsink and conserving power.
The MAX9709 operates from a single +10V to +22V supply, driving the load in a BTL configuration.
The MAX9709 offers two modulation schemes: a fixed-frequency modulation (FFM) mode, and a spread-spectrum modulation (SSM) mode that reduces EMI-radiated emissions.
The MAX9709 can be synchronized to an external clock from 600kHz to 1.
2MHz.
A synchronized output allows multiple units to be cascaded in the system.
Features include fully differential inputs, comprehensive click-and-pop suppression, and four selectable-gain settings (22dB, 25dB, 29.
5dB, and 36dB).
A pin-programmable thermal flag provides seven different thermal warning thresholds.
Short-circuit and thermal-overload protection prevent the device from being damaged during a fault condition.
The MAX9709 is available in 56-pin TQFN (8mm x 8mm x 0.
8mm) and 64-pin TQFP (10mm x 10mm x 1.
4mm) packages, and is specified over the extended -40°C to +85°C temperature range.
Features ♦ 2 x 25W Output Power in Stereo Mode (8Ω, THD = 10%) ♦ 1 x 50W Output Power in Mono Mode (4Ω, THD = 10%) ♦ High Efficiency: Up to 87% ♦ Filterless Class D Amplifier ♦ Unique Patented Spread-Spectrum Mode ♦ Programmable Gain (+22dB, +25dB, +29.
5dB, +36dB) ♦ High PSRR (90dB at 1kHz) ♦ Differential Inputs Suppress Common-Mode Noise ♦ Shutdown and Mute Control ♦ Integrated Click-and-Pop Suppression ♦ Low 0.
1% THD+N ♦ Current Limit and Thermal Protection ♦ Programmable Thermal Flag ♦ Clock Synchronization Input and Output ♦ Available in Thermally Efficie...


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