tda8563aq NXP Semiconductors, tda8563aq Datasheet - Page 4

• Manufacturer Part Number: tda8563aq
• Description: 2 X 40 W/2 Ohm Stereo Btl Car Radio Power Amplifier With Diagnostic Facility
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PINNING
2001 Feb 21
handbook, halfpage
IN 1
GND(S)
V
OUT 1A
GND1
OUT 1B
OUT 2A
GND2
OUT 2B
V
MODE
V
IN 2
P1
P2
DIAG
2
amplifier with diagnostic facility
SYMBOL
40 W/2
Fig.2 Pin configuration.
OUT 1B
OUT 2A
OUT 1A
OUT 2B
GND(S)
V
MODE
GND1
GND2
PIN
DIAG
10
11
12
13
V P1
V P2
IN 1
IN 2
1
2
3
4
5
6
7
8
9
stereo BTL car radio power
10
12
13
11
1
2
3
4
5
9
6
7
8
input 1
signal ground
supply voltage 1
output 1A
power ground 1
output 1B
output 2A
power ground 2
output 2B
supply voltage 2
mode switch input
diagnostic output
input 2
TDA8563AQ
DESCRIPTION
MGL075
4
FUNCTIONAL DESCRIPTION
The TDA8563AQ contains two identical amplifiers and can
be used for bridge applications. The gain of each amplifier
is fixed at 26 dB. Special features of the device are as
follows.
Mode select switch (pin 11)
Since this pin has a very low input current ( 40 A), a low
cost supply switch can be applied.
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 pin 1 and pin 13). During switching from
standby to mute, the slope should be at least 18 V/s.
This can be achieved by:
Diagnostic output (pin 12)
D
At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin 12
goes LOW. This information can be used to drive a sound
processor or DC volume control to attenuate the input
signal and thus limit the distortion. The output level of
pin 12 is independent of the number of channels that are
clipping (see Fig.3).
handbook, halfpage
YNAMIC DISTORTION DETECTOR
Standby: low supply current
Mute: input signal suppressed
Operating: normal on condition.
Microprocessor control
External timing circuit (see Fig.7).
Fig.3 Distortion detector waveform.
V O
V
12
V P
0
0
(DDD)
TDA8563AQ
Product specification
MGA721
t