STEVAL-CCA016V1

STEVAL-CCA016V1 Filter-free stereo 2.8 W Class-D audio power amplifier demo board with selectable 3D sound effects based on the TS4999 Data brief Features ■ Operating range from VCC= 2.4 V to 5.5 V ■ Dedicated standby mode active low for each channel ■ Output power per channel: 2.8 W at 5 V into 4 Ω with 10% THD+N ■ Output power per channel: 0.7 W at 3.6 V into 8 Ω with 1% THD+N max. ■ Selectable 3D sound effect ■ Four 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 ms ■ Output short-circuit and thermal shutdown protection ■ RoHS compliant STEVAL-CCA016V1 Description This 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 Ω load at 5 V per channel. The device has four different gain 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. Two standby pins (active low) allow each channel to be switched off separately. The TS4999 is available in a 18 bumps Flip-Chip package. June 2009 Doc ID 15864 Rev 1 For further information contact your local STMicroelectronics sales office. 1/5 www.st.com 5 Circuit schematic and BOM list STEVAL-CCA016V1 1 Circuit schematic and BOM list Figure 1. Schematic diagram Vcc P1 Vcc GND LinLin+ GND 1 2 VCC 3 1 4 3 2 1 C5 100nF 3D C6 1uF D6 U1 220nF C2 D4 C1 C1 AVCC RPVCC C7 1uF B6 2 JP1 Vcc S5 3D LPVCC JP3 LinP 220nF A1 Lin+ B2 Lin- G0 C3 G0 G1 C5 G1 E1 Rin+ LinN Lout+ A5 Lout- A7 H Gain PWM Select Bridge 3 S1 VCC 1 G0 3 S2 2 VCC Header 4 3D EFFECT 2 Oscillator 1 G1 1 2 3 4 JP4 RinP D2 Rin- A3 STBYL STBR E3 STBYR RinN Rout+ E5 Bridge Rout- E7 H Gain PWM Select C3 1 2 3 4 Header 4 STBL Standby Control TS4999 - FC18 PGND 1 3 1 S4 STBR JP2 3 1 2 3 4 S3 STBL C7 AGND 2 2 220nF Protection Circuit B4 220nF C4 GND Rin+ RinGND VCC Table 1. VCC Components list for the demonstration board Designation Quantity Description C1, C2, C3, C4 4 220 nF/16 V, SMD ceramic capacitor, 0603 C5 1 100 nF/16 V, SMD ceramic capacitor, 0603 C6, C7 1 1 µF/16 V, SMD ceramic capacitor, 0603 P1 1 2-pin header 2.54 mm pitch S1, S2, S3, S4, S5 5 3-pin header 2.54 mm pitch JP1, JP2, JP3, JP4 4 4-pin header 2.54 mm pitch U1 1 TS4999 class-D audio amplifier 2/5 Doc ID 15864 Rev 1 STEVAL-CCA016V1 2 Demonstration board layouts Demonstration board layouts The following figures depict the top view and layers of the demonstration board. Figure 2. PCB top layer Figure 3. PCB middle layer 1 Figure 4. PCB middle layer 2 Figure 5. PCB bottom layer Doc ID 15864 Rev 1 3/5 Revision history 3 STEVAL-CCA016V1 Revision history Table 2. 4/5 Document revision history Date Revision 11-Jun-2009 1 Changes Initial release. Doc ID 15864 Rev 1 STEVAL-CCA016V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2009 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com Doc ID 15864 Rev 1 5/5