STEVAL-CCA044V1 160 W + 160 W dual BTL class-D audio amplifier demonstration board based on the TDA7498E Data brief Features High output-power capability: 2 x 160 W / 4 at 36 V, 1 KHz, THD = 10% 1 x 220 W / 4 at 36 V, 1 KHz, THD = 10% Wide-range, single supply operation (14 V- 36 V) High efficiency ( = 85%) Four selectable, fixed gain settings (23.6 dB, 29.6 dB,33.1 dB and 35.6 dB) Differential inputs to minimize common-mode noise Standby and mute features Short-circuit and thermal overload protection Externally synchronizable RoHS compliant Description The STEVAL-CCA044V1 demonstration board is designed for the TDA7498E high power dual BTL class-D audio amplifier. Thanks to its high efficiency, the device assembled in the PSSO36 (slug-down) package is capable of dissipating heat without a heatsink. Jumpers on the board allow the configuration of the amplifier in order to verify all the features as single-ended or differential input, fixed gain settings. Microswitches are also provided to enable the standby and mute functions. January 2013 Doc ID 024062 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 47 Schematic diagram STEVAL-CCA044V1 1 Schematic diagram Figure 1. STEVAL-CCA044V1 circuit schematic - - 0212 / / 287387 / / 2QO 5 287387 5 /RDG RKP 5 / 287387 /RDG RKP QDT *PS UOEVD 9&& *1 5 5 5 5 5 & 5 & & 5 & 5 Q) Q) - Q) Q) & & & & Q) Q) Q) Q) & 9 & X) X) X) & & 9 / / / / X) 8- 83 0212 287 2SWLRQDO FRPSRQHQWV RU FLUFXLWU 83 8- 0212 287 9&& % 5 & 5 & X) 5 & & 5 X) % S) S) 9&& % % 9&& & X) 9 & 9 % X) % % & & % Q) Q) 695 95() 2873 2873 39&& 39&&% 39&&% 3*1 3*1 39&& 2871 2871 2873% 2873% 3*1 % 3*1 % 2871% 2871% ,& 45&7 7 - ,13 ,11 6*1 9 6 , * 526& * ,1 02 ( 69&& 966 68%B*1 9 3: 3*1 6<1&/. ,13% ,11% 087( 67%< & Q) - - , * - - 5 N 9 6 Q) Q) & & & & Q) Q) & X) 9 & X) 9 9 6 9 6 5 & 5 - 5 - Q) . & Q) & 9&& 5 5 N Q) N 5 & & X) N & X) & X) X) 5 5 N N 9 5 . 5 N )RU ,QSXW & 4 5 N ,1 ,QSXW DQG Q) 5 6LQJOH (QGHG N 0212 &RQILJ 087( 67%< .7& 6 - - )RU 6LQJOH (QGHG *1 36 6 6+,)7)5(48(1&< 6 9 6 ,& 9 32:(5 6833/< / &= 36 5 N / / 5 5 287 - & X) - 0212 ,1387 - 9 / / 2QO 0212 &RQILJ ,1387 2/4 Doc ID 024062 Rev 1 / 4: