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TDA8947J Datasheet(Fiches technique) 15 Page - NXP Semiconductors

Numéro de pièce TDA8947J
Description  4-channel audio amplifier (SE: 1 W to 25 W; BTL: 4 W to 50 W)
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
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Philips Semiconductors
TDA8947J
4-channel audio amplifier
Preliminary data
Rev. 01 — 06 February 2004
15 of 24
9397 750 10779
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
13. Application information
13.1 Application diagrams
Fig 12. Typical application diagram without on/off switching plops.
VCC1
VCC2
16
220 nF
IN1
+
IN2
+
OUT1
+
OUT2
220 nF
RL
4
RL
4
470
µF
1
4
VCC
1000
µF
100 nF
470 nF
IN3
+
IN4
+
OUT3
OUT4
+
Vi
Vi
Vi
VCC
VCC
RL
8
+
+
+
22
µF
2.2
µF
10
k
50
k
270
BC547
BC547
7.5 V
micro-
controller
215
GND1
GND2
60 k
60 k
3
8
6
60 k
60 k
9
12
14
17
TDA8947J
MUTE 3
+ 4
ON 3
+ 4
mdb017
STANDBY ALL
MUTE ALL
ON 1
+ 2
0.5VCC
VCC
CIV 13
MODE1
SGND
10
7
SVR 11
MODE2 5
SHORT-CIRCUIT
AND
TEMPERATURE
PROTECTION
Vref
47
µF
1.5
k
100
k
Table 11:
Amplifier selection by microcontroller
Microcontroller with open-collector output; see Figure 12
Microcontroller
Channels 1 and 2
Channels 3 and 4
LOW
on
on
HIGH
mute
mute




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