STEVAL-CCA011V1 Filter-free stereo 2x2.5 W Class-D audio power amplifier demonstration board based on the TS2012FC Data brief Features Operating range from V = 2.5 V to 5.5 V CC Dedicated standby mode active low for each channel Output power per channel: 1.15 W 5 V or 0.63 W 3.6 V into 8 with 1% THD+N max Output power per channel: 1.85 W 5 V into 4 with 1% THD+N max Output short-circuit protection Four gain select settings: 6, 12, 18, 24 dB Low current consumption PSRR: 63 dB typ 217 Hz with 6 dB gain STEVAL-CCA011V1 Fast start-up phase: 8 ms Thermal shutdown protection RoHS compliant Description This demonstration board is based on TS2012FC that is a fully differential Class-D stereo power amplifier able to drive up to 1.15 W into an 8 load at 5 V per channel. It achieves better efficiency compared to typical Class-AB audio amps. The device has four different gain settings that use two digital pins: G0 and G1. Pop and click reduction circuitry provides low on/off switch noise while allowing the device to start within 8 ms. Two standby pins (active low) allow each channel to be switched off independently. The TS2012FC also integrates output short- circuit protection and thermal shutdown protection and it is available in a 16-bumps Flip-Chip package. June 2009 Doc ID 15789 Rev 1 1/6 For further information contact your local STMicroelectronics sales office. www.st.com 6 Obsolete Product(s) - Obsolete Product(s) Circuit schematics STEVAL-CCA011V1 1 Circuit schematics Figure 1. Schematic diagram Vcc Vcc JP5 100nF P1 Vcc C5 1 2 C6 1uF C1 220nF U1 C2 AVCC PVCC JP3 220nF LinP A1 Lin+ Lout+ A3 1 H Gain 2 PWM 3 Select LinN B1 Lin- Lout- A4 Bridge 4 S1 3 Header 4 2 1 JP6 VCC G0 C2 G0 G0 Oscillator G1 B2 G1 S2 3 2 JP7 1 VCC JP4 G1 RinP D1 Rin+ Rout+ D3 1 H Gain 2 PWM 3 RinN C1 Rin- Select Rout- D4 Bridge 4 C3 Header 4 220nF STBL B4 STBYL Standby Protection C4 STBR B3 STBYR Control Circuit 220nF AGND PGND TS2012 - FC16 S3 S4 STBL STBR JP8 VCC VCC Table 1. Component 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 1 1 F/16 V, SMD ceramic capacitor, 0603 P1, JP5, JP6, JP7, JP8 5 2-pin header 2.54 mm pitch S1, S2, S3, S4 4 3-pin header 2.54 mm pitch JP1, JP2, JP3, JP4 4 4-pin header 2.54 mm pitch U1 1 TS2012EIJT 2/6 Doc ID 15789 Rev 1 Obsolete Product(s) - Obsolete Product(s) JP2 JP1 GND 1 4 GND Rin+ 2 3 Lin- Rin- 3 2 Lin+ GND 4 1 GND 1 1 1 1 2 2 2 2 3 2 1 3 2 1 C3 D2 Vcc Pgnd C4 A2 Vcc