PBL 3852
Pin Description
DIP
SO
Symbol
Description
1
1
+L
Positive line terminal
2
2
TO
Slope setting for DC characteristic and sidetone balancing signal output
Transmitter amplifier input
3
3
TI
4
4
+C
Internal power supply
5
5
DCC
MUTE
RCT
DC2
DC1
NC
Line voltage DC level adjustment input
Transmitter and receiver amplifier mute input
Dynamic limiter ”soft clipping” input
DC supply 2 output, typically 3.7 V
DC supply 1 output, typically 2.1 V
Not connected
6
6
7
7
8
8
9
9
10
11
12
13
14
15
16
17
18
19
20
NC
Not connected
10
11
12
13
14
15
16
17
18
GR
The output of the rectifier to the dynamic limiter and gain regulation input
Microphone amplifier output
MO
MI1
MI2
-L
Microphone amplifier non-inverting input
Microphone amplifier inverting input
Negative line terminal
RI
Receiver amplifier input
RO1
RO2
PD
Receiver amplifier inverting output
Receiver amplifier non-inverting output
Power down input
+L
1
2
3
4
5
6
7
8
9
18 PD
TO
TI
17 RO2
16 RO1
15 RI
20 PD
19 RO2
18 RO1
17 RI
+L
TO
1
2
TI
3
+C
+C
4
16 -L
DCC
Mute
RCT
DC2
DC1
NC
5
DCC
Mute
RCT
DC2
DC1
14 -L
15 MI 2
14 MI 1
13 MO
12 GR
11 NC
6
13 MI 2
12 MI 1
11 MO
10 GR
7
8
9
10
DIP
SO
Figure 5. Pin configuration.
4
ERICSSON [ ERICSSON ]
