TDA8561 Philips Semiconductors, TDA8561 Datasheet - Page 14

• Manufacturer Part Number: TDA8561
• Description: 2 x 24 W BTL or 4 x 12 W single-ended car radio power amplifier
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Mode select switch
To avoid switch-on plops, it is advised to keep the amplifier
in the mute mode during >100 ms (charging of the input
capacitors at pins 1, 3, 15 and 17.
The circuit in Fig.11 slowly ramps up the voltage at the
mode select switch pin when switching on and results in
fast muting when switching off.
1999 Jun 30
2
car radio power amplifier
(1) f = 10 kHz.
(2) f = 1 kHz.
(3) f = 100 Hz.
THD
10
10
(%)
10
10
24 W BTL or 4
1
10
1
2
2
2
Fig.12 Total harmonic distortion as a function of output power; V
10
12 W single-ended
1
14
1
handbook, halfpage
(1)
(2)
(3)
Fig.11 Mode select switch circuitry.
V P
47 F
10 k
P
= 14.4 V, R
10
L
100
100 k
P (W)
= 4
o
Product specification
TDA8561Q
MGA708
switch
select
mode
MGA709
10
2