Philips TDA1552Q July 1994 3, Fig.1 Block diagram.

July 1994 3
Philips Semiconductors Product specification
2 x 22 W BTL stereo car radio power
amplifier TDA1552Q
Fig.1 Block diagram.
handbook, full pagewidth
mute/stand-by
MLB952
output 1A
Vref
x1
VA
stand-by
switch
VP
mute
switch
stand-by
reference
voltage
310
VP1 VP2
18 kΩ
2
kΩ
18 kΩ
15 kΩ
15 kΩ
2
kΩ
18 kΩ
2
kΩ
18 kΩ
2
kΩ
60
kΩ
60
kΩ
mute switch
VA
Cm
power stage
mute switch
VA
Cm
power stage
4
6
11
12
mute switch
VA
Cm
power stage
mute switch
VA
Cm
power stage
9
7
Vref
258
ground (signal)
GND1 GND2
power ground (substrate)
output 2B
output 2A
not connected
output 1B
input 1
input 2 13
1
TDA1552Q