This post explains for the amplifier.
The Part Number is C1316C, uPC1316C.
The function of this semiconductor is Audio Amplifier.
Manufacturer: NEC
Preview images :
1 page
Description
The C1316C is a dual audio power amplifier designed for portable audio sets.
Features
1. Wide operation voltage range : Vcc = 3 to 16 V
2. High output power
3. High supply voltage rejection : SVR = 45 dB
4. Low quiescent current : Icc = 12mA
5. Low pop noise at power switch on and off.
[…]
2 page
