pbl3853 ETC-unknow, pbl3853 Datasheet - Page 5

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

Pin Description
DIP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Figure 5. Pin configuration.
SO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DCAC
GR
TO
Symbol
+L
TO
TI
+C
DCAC
GR
T2
T1
FE
NC
NC
TM
MO
MI
MI
-L
RI
RO
RI
VDC
+C
FE
T2
T1
+L
TI
1
2
1
2
1
2
3
4
5
6
7
8
9
18 pin-DIP
Output of the transmitter (+Line side)
Output of the transmitter (side tone signal)
Input of the transmitter amplifier
The circuit supply (sinks ~ 0,3 mA)
Adjustment for DC-char. and AC imp. to line
Gain regulation starting point setting
Output for transistor 2, active when voltage on the line is too low for VDC
Output for transistor 1, active when charging current into VDC’s reservoir capacitor
Feedback
No connection
No connection
Transmitter mute input
Microphone amplifier output
Microphone amplifier inverting input
Microphone amplifier non inverting input
Negative terminal of the circuit
Receiver amplifier input (gain control)
Receiver amplifier output
Receiver amplifier input for cut-off, see page 7.
VDC supply terminal
18
17
16
15
14
13
12
11
10
VDC
RI 2
RO
RI 1
-L
MI 2
MI 1
MO
TM
DCAC
TO
GR
+C
+L
T2
NC
T1
FE
TI
10
1
2
3
4
5
6
7
8
9
20 pin-SO
15
12
20
19
18
17
16
14
13
11
VDC
RI2
TM
RO
RI1
MI 2
MO
NC
-L
MI 1
PBL 3853
5