PBL 3881
6
5
1
17
12
13
+
2.2µF
DC
DC
Ref.
supply
supply
Ref.
15
16
PBL 3852
2
7
14
4 +
11
3
18
9
8
10
150nF
47nF
100Ω
DC1 DC2
6.2k
62k
680Ω
15k
150Ω
910Ω
+
+
3.9k
75Ω
10k
15nF
+
1.3k
47nF
18k
47µF
24k
150k
Pin numbers refer to DIP- package.
DTMF
100k
4 x IN4007
hook switch
off
on
Tone
ringe
Unnamed diodes = IN4148
Line
+
100 µF
16 V
+
2200µF
16 V
50 Ω LOUDSPEAKER
.015µF
Mute
10k
21
17
19
0.22µF
20
22
16
-
+
5.6 k
.068µF
18
handsfree
handset
5
PBL 3881
14
47 k
10
0.1µF
Control
+
–
–
4.7 k
50 k
+
F3
F6
15
4
F2
F5
-
10k
0.22
µF
11
13
3
1
1 µF
3.6 k
0.15µF
-
F1
F4
+
12
2
+
7
6
8
9
.033µF
3.6 k
MIC.
3.2 k
33 k
0.15µF
Background
noise detector
100Ω
100Ω
1k
470 k
.0047µF
+
100 k
.0068µF
220µF
6V
100 k
2.2 µF
16 V
100 µF
16 V
+
+
+
0.1µF
2.2 µF
16 V
470k
10 k
Figure 29. Application 2.
14
ERICSSON [ ERICSSON ]
