pbl3853 ETC-unknow, pbl3853 Datasheet - Page 2

• Manufacturer Part Number: pbl3853
• Description: Universal Speech Circuit
• Manufacturer: ETC-unknow

PBL 3853
Figure 4. Reference figure with line length regulation. DIP-package.
2
R
R
A
B
C = 1 F when artificial line is used
470 F when not used
E= 50V
+
E= 50V
+
R
R
R -0-4k
feed
L
feed
R1
R2
0 ohm when artificial
line is used
0 ohm when artificial
line is used
= 400 +400
= 400 +400
R -0-4k
L
C3
+
C1
Mic
10
12
13
5H+5H
5H+5H
Transmitter mute
4
R
5
R
6
AC-DC char. adjust
C
D
V
V
M
1
V
V
+ V
1
1 F
2
2
PBL3853
C
DTMF
In
+
14
600
600
R
U = 15-16V
DTMF
z
C4
R3
ARTIFICIAL
R4
11
LINE
3
V
C5
L
R5
V
2
T
L
X
Tone in
1
R12
I
I
L
L
R6
I
I
V
V
DC
DC
R9
R8
DC
DC
17
Recelver
cut-off
Transmitter
mute
-
-
Recelver
cut-off
Transmitter
mute
+ LINE
+ LINE
PBL 3853
see fig 4
PBL 3853
see fig 4
LINE
LINE
Cut-off
9
R7
C6
+
+
Recevler
tone
input
Recevler
tone
input
-
-
15
REC
REC
MIC
MIC
R10
Receiver
C7
R
x
R11
V
V
4
4
+
-
18
C8
16
7
8
Z
Z
+
Rec
Rec
C9
D2 D3
T1
Z
Z= 500
=350
350
Z
Z= 500
Mic
Mic
R 13
V
V
V
V
Rec
=150
3
3
=150
5
5
T2
D1
C2
I
L
Figure 3. Test set up with rectifier bridge.
Figure 2. Test set up without rectifier
bridge.
+ Line
-Line
+
V
C10
DC
R2 = 22
R1 = 2.7 k
R3 = 6.8 k
R4 = 1.8 k
R5 = 75
R6 = 910
R7 = 6.2k
R8 = 560
R9 = 11 k
R10 = 4.7k
R11 = 120k
R12 = 56
R13 = 68
R
R
* values for the test set up only
C
D
= 30 k*
= 11k*
C1 = 150 nF
C2 = 10 nF
C3 = 47 F
C4 = 220 nF
C5 = 150 nF
C6 = 47 nF
C7 = 100 nF
C8 = 68 nF
C9 = 4.7 F
C10 = 22 F
D1 = Z 4.5 V
D2 = 1N4148
D3 = 1N4148
T1 = BC178B
T2 = BC178B