TDA8566Q Datasheet, PDF (9/12 Pages) NXP Semiconductors – 2 x 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs

Philips Semiconductors
2 × 25 W BTL stereo car radio power amplifier
with differential inputs and diagnostic outputs
TEST AND APPLICATION INFORMATION
Product specification
TDA8566Q
handbook, full pagewidth
Vin1
Vin2
+
Vmode _{_}
14
+1
Rs/2 _{220 nF}
60
kΩ
Rs/2
60
220 nF
_
kΩ
2
Vref ₊
3^−
Rs/2
220 nF
+ 16
60
kΩ
Rs/2
60
220 nF
kΩ
_ ₁₇
100
2200
nF µF/16V
+ _{VP =}
_ ^{14.4 V}
5
+
−
13
6+
TDA8566Q
RL1
−
8^_
VP VP
+
CLIP
4
DETECTOR
10 10
kΩ kΩ
CLIP
DIAGNOSTIC 15
INTERFACE
+
10 +
−
RL2
−
+
7
12 ^_
11
DIAG
MGD104
Fig.6 Stereo BTL test diagram.
Application notes
DIAGNOSTIC OUTPUT
Special care must be taken in the PCB layout to separate
pin 4 from pins 1, 2, 16 and 17 to minimize the crosstalk
between the CLIP output and the inputs.
MODE SELECT SWITCH
To avoid switch on plops, it is advisable to keep the
amplifier in the mute mode during ≥150 ms (charging of
the input capacitors at pins 1, 2, 16 and 17). The circuit in
Fig.7 slowly ramps-up the voltage at the mode select
switch pin when switching on and results in fast muting
when switching off.
+Vsupply
handbook, halfpage
S
10 kΩ
47 µF
100 Ω
mode
select
switch
100 kΩ
MGD102
1998 Sep 23
Fig.7 Mode select switch circuit.
9