Description：
The YDA145 is a 2.1Wx1CH Non-Clip class D amplifier IC. The YDA145 features YAMAHA
original non-clip output control function which detects output signal clip due to the over
level input signal and suppress the output signal clip automatically. Also the non-clip output
control function can adapt the output clip caused by power supply voltage down with
battery. This is the difference from the traditional AGC or ALC circuit.

Application
Small speaker audio system such as cellular phone, PDA, Portable GPS

Features
Output Power
2.1Wx1CH at 4Ω VDD=5V THD+N<10%
Power Supply Voltage
VDD=2.7V～5.25V
Signal Input & Output
Analog signal input/non-clip range 10dB
PWM BTL output
Others
Input gain setting 18dB/16dB/14dB/12dB/10dB by the external résistance
Package:9WLCSP, 1.56x1.65mm size
Non-Clip Function