MAX9773 1.8W, Filterless, Ultra-Low EMI, Stereo Class D Audio Power Amplifier

The MAX9773 3rd-generation, ultra-low EMI stereo, Class D Audio Power Amplifier provides Class AB performance with Class D efficiency. The MAX9773 delivers 1.8W per channel into a 4 load, and offers efficiencies above 90%. Active emissions limiting (AEL) circuitry greatly reduces EMI by actively controlling the output FET Gate transitions under all possible transient conditions. AEL controls high-frequency emissions resulting from conventional Class D free-wheeling behavior in the presence of an inductive load. Zero-dead- time (ZDT) technology maintains state-of-the-art efficiency and THD+N performance by allowing the output FETs to Switch simultaneously without cross conduction. A patented spread-spectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices. These design concepts reduce component count and extend battery life.
The MAX9773 offers two modulation schemes: a fixed-frequency (FFM) mode, and a spread-spectrum (SSM) mode that reduces EMI-radiated emissions. The MAX9773 Oscillator CAN be synchronized to an external Clock through the SYNC input, allowing synchronization of multiple Maxim Class D Amplifiers The sync output (SYNC_OUT) CAN be used for a master-slave application where more channels are required. The MAX9773 features a fully differential architecture, a full bridge-tied load (BTL) output, and comprehensive click-and-pop suppression. The device features internally set gains of 12dB, 15.6dB, 20dB, and 26dB selected through two gain-select inputs, further reducing external component count.
The MAX9773 features high 80dB PSRR, less than 0.1% THD+N, and SNR in excess of 88dB. Short-circuit and thermal-overload protection prevent the device from being damaged during a fault condition. The MAX9773 is available in 24-pin thin QFN-EP (4mm x 4mm x 0.8mm), and 20-bump UCSP (2mm x 2.5mm x 0.6mm) packages. The MAX9773 is specified over the extended -40C to +85C temperature range.
By Maxim Integrated Products
MAX9773 's PackagesMAX9773 's pdf datasheet
MAX9773ETG QFN
MAX9773ETGT QFN
MAX9773EBP UCSP
MAX9773EBPT UCSP




MAX9773 Pinout, Pinouts
MAX9773 pinout,Pin out
This is one package pinout of MAX9773,If you need more pinouts please download MAX9773's pdf datasheet.

MAX9773 Application circuits
MAX9773 circuits
This is one application circuit of MAX9773,If you need more circuits,please download MAX9773's pdf datasheet.


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