Audio Amplifier
SIP13 +------+ ++ 13| FB AMP2 IN | 12| AMP2 IN | 11| ST BY | 10| Vcc | 9| AMP2 OUT | 8| C2 | 7| GND | 6| C1 | 5| AMP1 OUT | 4| NC | 3| Vref | 2| AMP1 IN ++ 1| FB AMP1 IN +------+
No frequency to check
TDA1515 Datasheet