PAM8902 Datasheet, PDF (2/13 Pages) Power Analog Micoelectronics – 30-Vpp Mono Class-D Audio Amplifier for Piezo/Ceramic Speakers

PAM8902
30-Vpp Mono Class-D Audio Amplifier for Piezo/Ceramic Speakers
Block Diagram
Comp
SW
PVCC
Resistor
Divider
Vref ₊
GM
feedback _-
-
PWM
+
PWM Logic
And Driver
ENA
GSET
VSET
Enable
Gain
Vout
Setting
Σ
Ramp
Generator
1.5MHz
Oscillator
+
CS
-
VOUT
PGND1
AVDD
Bias and
Vref
VCM/SS
PLL
375KHz
Protection Function
VCM
INN
INP
Gain
Adjust
-
+
PWM
Modulator
Level
Shift
and
H-Bridge
AGND
PVCC
OUT+
OUT-
PGND2
Power Analog Microelectronics, Inc
www.poweranalog.com
2
01/2012 Rev1.4