DescriptionThis demonstration board is designed to evaluate the performances of TS4999, that is a stereo fully differential Class-D power amplifier. It can drive up to 1.35 W into a 8 load at 5 V per settings utilizing two discrete pins, G0 and G1.Pop and click reduction circuitry provides low on/off switch noise while allowing the device to start within 8 ms. 3D enhancement effects are selected through one digital input pin that allows more amazing stereo audio sound.to be switched off separately.The TS4999 is available in a 18 bumps Flip-Chip package.STEVAL-CCA016V1www.st.com Circuit schematic and BOM listSTEVAL-CCA016V12/5 Doc ID 15864 Rev 11 Circuit schematic and BOM listFigure 1.Schematic diagram GainSelectOscillatorPWMPWMGainSelectStandbyControlProtectionCircuitBridge HBridge HLin+Lin- G0G1Rin+Rin-STBYLSTBYRLout+ D4D6 A5A7E5E7 C7 B4E3A3 D2 E1 C5C3 B2Lout-Rout+Rout-RPVCCPGNDAGNDAVCC3D EFFECTC1 3D B6LPVCC U1TS4999 - FC18C1220nF C2220nF C3220nF C4220nF 2 S2 G1 2 S1 G0 2 S3STBL 2 S4S Features Operating range from VCC= 2.4 V to 5.5 VDedicated standby mode active low for each channel Output power per channel: 2.8 W at 5 V into 4 with 10% THD+N Output power per channel: 0.7 W at 3.6 V into 8 with 1% THD+N max.Selectable 3D sound effectFour gain setting steps: 3.5, 6, 9.5 and 12 dB.Low current consumption PSRR: 63 dB typ @ 217 Hz.Fast start-up phase: 7.8 msprotection RoHS compliantDescriptionThis demonstration board is designed to evaluate the performances of TS4999, that is a stereo fully differential Class-D power amplifier. It can drive up to 1.35 W into a 8 load at 5 V per settings utilizing two discrete pins, G0 and G1.Pop and click reduction circuitry provides low on/off switch noise while allowing the device to start within 8 ms. 3D enhancement effects are selected through one digital input pin that allows more amazing stereo audio sound.to be switched off separately.The TS4999 is available in a 18 bumps Flip-Chip package.STEVAL-CCA016V1www.st.com Circuit schema Data briefJune 2009Doc ID 15864 Rev 11/55STEVA