STEVAL-CCA042V1 STMicroelectronics

STEVAL-CCA042V1 20 W + 20 W dual BTL class-D audio amplifier demonstration board based on the TDA7491HV Data brief Features 20 W +20 W continuous output power at THD = 10%, R = 8 , V = 18 V L CC 9.5 W + 9.5 W continuous output power at THD = 10%, R = 8 , V = 12 V L CC Wide-range single-supply operation (5 - 18 V) High efficiency ( = 90%) Four selectable, fixed gain settings (20 dB, 26 dB, 30 dB and 32 dB) Differential inputs to minimize common-mode noise Filterless operation Standby and mute features Short-circuit and thermal overload protections Externally synchronizable RoHS compliant Description The STEVAL-CCA042V1 demonstration board is designed for the TDA7491HV 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 configuration of the amplifier to verify all the features as single-ended or differential inputs, fixed gain settings. Microswitches are also provided to enable the standby and mute functions October 2012 Doc ID 023793 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4Schematic diagram STEVAL-CCA042V1 1 Schematic diagram Figure 1. STEVAL-CCA042V1 circuit schematic 2/4 Doc ID 023793 Rev 1