Part # MAX9773 datasheet

Part Manufacturer: Maxim


Part Description: MAX9773 DS

Part Details:

19-3976; Rev 0; 1/06 1.8W, Filterless, Ultra-Low EMI, Stereo Class D Audio Power Amplifier MAX9773 General Description Features The MAX9773 3rd-generation, ultra-low EMI, stereo, Filterless Amplifier Passes FCC-Radiation Class D audio power amplifier provides Class AB per- Emissions Standards with 6in of Cable formance with Class D efficiency. The MAX9773 deliv- Unique Spread-Spectrum Mode and Active ers 1.8W per channel into a 4 load, and offers Emissions Limiting Achieves Better than 15dB efficiencies above 90%. Active emissions limiting (AEL) Margin Under FCC Limit circuitry greatly reduces EMI by actively controlling the Zero Dead Time (ZDT) H-Bridge Maintains Good output FET gate transitions under all possible transient THD+N Performance conditions. AEL controls high-frequency emissions Single-Supply Operation (2.5V to 5.5V) resulting from conventional Class D free-wheeling Stereo Output (4, VDD = 5V, THD+N = 1%, behavior in the presence of an inductive load. Zero- POUT = 1.8W) dead-time (ZDT) technology maintains state-of-the-art No LC Output Filter Required efficiency and THD+N performance by allowing the out- 85% Efficiency (RL = 8, PO = 600mW) put FETs to switch simultaneously without cross con- duction. A patented spread-spectrum modulation Less Than 0.1% THD+N scheme eliminates the need for output filtering found in High 80dB PSRR traditional Class D devices. These design concepts Fully Differential Inputs reduce component count and extend battery life. Integrated Click-and-Pop Suppression The MAX9773 offers two modulation schemes: a fixed- Low-Power Shutdown Mode (0.1µA) frequency (FFM) mode, and a spread-spectrum (SSM) Short-Circuit and Thermal-Overload Protection mode that reduces EMI-radiated emissions. The Pin-for-Pin Compatible with the MAX9701 MAX9773 oscillator can be synchronized to an externalclock through the SYNC input, allowing synchroniza- Available in Thermally Efficient, Space-Saving Packages tion of multiple Maxim Class D amplifiers. The sync 24-Pin TQFN-EP (4mm x 4mm x 0.8mm) output (SYNC_OUT) can be used for a master-slave 20-Bump UCSP (2mm x 2.5mm x 0.6mm) application where more channels are required. TheMAX9773 features a fully differential architecture, a full Ordering Information

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MAX9773.pdf Datasheet