The MAX9708 mono/stereo, Class D audio power amplifier delivers up to 2 x 21W into an 8Ω stereo mode and 1 x 42W into a 4Ω load in mono mode while offering up to 87% efficiency. The MAX9708 provides Class AB amplifier performance with the benefits of Class D efficiency, eliminating the need for a bulky heatsink and conserving power. The MAX9708 operates from a single +10V to +18V supply, driving the load in a BTL configuration. The MAX9708 offers two modulation schemes: a fixed-frequency modulation (FFM) mode, and a spread-spectrum modulation (SSM) mode that reduces EMI-radiated emissions. The MAX9708 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 MAX9708 is available in a 56-pin TQFN (8mm x 8mm x 0.8mm) package and is specified over the extended -40°C to +85°C temperature range. Applications * Automotive * LCD TVs * PC/HiFi Audio Solutions * PDP TVs * 2 x 21W Output Power in Stereo Mode (8Ω, THD = 10%) * 1 x 42W Output Power in Mono Mode (4Ω, THD = 10%) * High Efficiency: Up to 87% * Filterless Class D Amplifier * Unique 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 * SYNC Input/Output * Available in Thermally Efficient, Space-Saving 56-Pin TQFN Package https://elecena.pl/product/22335200/20w-40w-filterless-spread-spectrum-mono-stereo-class-d-amplifier 2022-12-29 https://elecena.pl/product/22335200/20w-40w-filterless-spread-spectrum-mono-stereo-class-d-amplifier 2025-01-21