2 W stereo audio power amplifier based on the TS4982
DescriptionThe STEVAL-CCA019V1 is a demonstration the TS4982, which features a stereo loudspeaker driver and a ground-referenced stereo headphones driver. An independent standby mode pin allows the TS4982 to simultaneously drive both output drivers.Operating on a single 5 V supply, the TS4982 delivers 2 W (typ.) output power into a 4 1% THD+N.The TS4982 features a PC beep input, three levels of 3D stereo enhancement and 4-step gain control using two digital input pins.A minimum number of external components makes the TS4982 well suited for notebook and other hand-held sound equipment. It also has an short-circuit protection mechanism. The TS2012 is available in a 4x4 mm QFN20 package.STEVAL-CCA019V1AM05060v1www.st.com Schematic diagramSTEVAL-CCA019V12/4 Doc ID 16074 Rev 11 Schematic diagramFigure 1.Circuit schematicAM05060v1 1uFC14 1uF C5 1uFC1547k R1PGNDR 21HDEN 22 SPKREN 23 BYP 24HRIN 26HLIN 27GND 283 D0 29 VCC 30 G0 31 G1 323 D1 1LRIN 2LLIN 3 BEEP 4PGNDL 5LOUT+ 6LOUT- 7PVCCL 8CPVCC Features 2 W output power into 4 load per channel125 mW into 16 stereo headphone driverFour-step gain settings on speaker path3 levels of 3D effect on speaker pathPC-beep input system detection8 kV HBM ESD-protected headphone outputs32-pin 5 x 5 mm QFN packageThermal shutdown and output short-circuit protection RoHS compliantDescriptionThe STEVAL-CCA019V1 is a demonstration the TS4982, which features a stereo loudspeaker driver and a ground-referenced stereo headphones driver. An independent standby mode pin allows the TS4982 to simultaneously drive both output drivers.Operating on a single 5 V supply, the TS4982 delivers 2 W (typ.) output power into a 4 1% THD+N.The TS4982 features a PC beep input, three levels of 3D stereo enhancement and 4-step gain control using two digital input pins.A minimum number of external components makes the TS4982 well suited for notebook and other hand-held sound equipment. It also has an short-circuit protection mechanism. The TS2012 is available in a 4 Data briefJuly 2009Doc ID 16074 Rev 11/44STEVA
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