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TDA8941 View Datasheet(PDF) - Philips Electronics

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Philips Semiconductors
14. Application information
TDA8941P
1.5 W mono BTL audio amplifier
handbook, full pagewidth
Rs
220 nF
Symmetrical
input
Ci
220 nF
Rs
220 nF
Asymmetrical
input
Ci
signal
GND
220 nF
VCC
R
IN5
1.5
nF
3
IN+
MODE 4
C1
MICROCONTROLLER
C2
MODE
Standby
Mute
On
C1 C2
00
01
10
R
signal
GND
SVR 6
10
µF
Fig 13. Application diagram.
100 nF
1
30 k
Ri
45 k
1/2 VCC
Ri
45 k
−+
+
+
1/2 VCC
+
7 OUT
2 OUT+
TDA8941P
30 k
STANDBY/
MUTE LOGIC
VCC
20 k
1/2 VCC
20 k
SHORT CIRCUIT
AND
TEMPERATURE
PROTECTION
8
GND
MGU016
+VCC
1000 µF
RL
16
14.1 Printed-circuit board (PCB)
14.1.1 Layout and grounding
For a high system performance level certain grounding techniques are essential.
The input reference grounds have to be tied with their respective source grounds and
must have separate tracks from the power ground tracks; this will prevent the large
(output) signal currents from interfering with the small AC input signals.
The small-signal ground tracks should be physically located as far as possible from
the power ground tracks. Supply and output tracks should be as wide as possible for
delivering maximum output power.
9397 750 06864
Product specification
Rev. 02 — 7 April 2000
© Philips Electronics N.V. 2000. All rights reserved.
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