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
3
10
VP1
VP2
18 k
Ω
2
k
Ω
18 k
Ω
15 k
Ω
15 k
Ω
2
k
Ω
18 k
Ω
2
k
Ω
18 k
Ω
2
k
Ω
60
k
Ω
60
k
Ω
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
2
5
8
ground (signal)
GND1
GND2
power ground (substrate)
output 2B
output 2A
not connected
output 1B
input 1
input 2
13
1
TDA1552Q