STEVAL-CCA013V1 Mono Class-D audio amplifier with power analog switch demonstration board based on the TS4961T Data brief Features Power supply range: 2.4 V to 4.3 V Audio amplifier standby mode active low Ultra high-off-isolation on analog switch: -80 dB typical Output power: 1.6 W at 4.2 V into 4 W with 1% THD+N maximum Adjustable gain via external resistors Low current consumption 2 mA at 3 V Efficiency: 88% typical Signal-to-noise ratio: 85 dB typical PSRR: 63 dB typical at 217 Hz with 6 dB gain STEVAL-CCA013V1 Thermal shutdown protection Break before make delay switching time QFN16 package 3mm x 3mm, 450 m pitch Description This demonstration board is designed to evaluate the TS4961T1, a mono Class-D speaker driver with power audio switch, dedicated to high audio performances and space-constrained applications. The chip has two functions: the first is an audio Class-D amplifier, and the second is a dual-power analog switch. Both functions can be used separately (for two different audio channels) or together (to connect two audio sources to one speaker). Thanks to the output configuration possibilities, the power supply pins, the I/O pins and the standby pins are separated. It is also possible to control both switches separately. The TS4961T device is soldered on the two-layer PCB. Both functions previously mentioned can be evaluated separately or together through connectors on the demonstration board. June 2009 Doc ID 15790 Rev 1 1/5 For further information contact your local STMicroelectronics sales office. www.st.com 5 Obsolete Product(s) - Obsolete Product(s) Circuit schematics and BOM list STEVAL-CCA013V1 1 Circuit schematics and BOM list Figure 1. Schematic diagram 9 4 3 ) 9 4 %0 3, N& + 3, 4 /5 + N& 4 /5 A . S . 6 TO 6 6 TO 6 4 43 U& U& - Table 1. Component list for the demonstration board Name Quantity Description C1, C2 2 100 nF/50 V X7R, +/-10 %, SMD ceramic capacitors, 0603 C3, C4 2 1 F/10 V X5R, +/-10 %, SMD ceramic capacitors 0603 R1, R2 2 150 K/1 %, 0.063 W, SMD resistors, 0603 J3, J4, J5, J6 4 2-pin header 2.54 mm pitch J1, J2, JP1, JP2, JP3 5 3-pin header 2.54 mm pitch IC1 1 TS4961TIQT 2/5 Doc ID 15790 Rev 1 Obsolete Product(s) - Obsolete Product(s) * * 6 S 6 S 6 A 6 A * 4 * 4 ). * ). 2 3 2 * 3, 3, *0 *0 *0 6 A 6 S 6 S