PBL 386 50/2
2
RRLY
RRLY
2
HP
3
RINGX
4
BGND
5
TIPX
6
VBAT
7
VBAT2
8
PSG
9
LP
10
DT
11
DR
12
23
AGND
22
RSN
21
REF
RINGX
BGND
TIPX
VBAT
VBAT2
PSG
NC
5
6
7
8
9
10
11
26
RSN
PTG
28
VTX
NC
4
3
HP
PTG
1
24
VTX
27
AGND
1
25
24
NC
REF
PLC
POV
PLD
VCC
NC
24-pin SOIC
20
PLC
and
19
POV
24-pin SSOP
18
PLD
17
VCC
16
DET
15
C1
28-pin PLCC
23
22
21
20
19
12
DT
13
DR
14
C3
15
C2
16
C1
17
14
C2
13
C3
Figure 8. Pin configuration, 24-pin SSOP, 24-pin SOIC and 28 pin PLCC package, top view.
Pin Description
Refer to figure 8.
PLCC
Symbol Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PTG
RRLY
HP
NC
RINGX
BGND
TIPX
VBAT
VBAT2
PSG
NC
LP
DT
DR
Progr.Transmit Gain.
Left open transmit gain = -6.02 dB, connected to AGND transmit gain = -12.04 dB.
Ring Relay
driver output. The relay coil may be connected to maximum +14V.
Connection for
High Pass
filter capacitor, C
HP
. Other end of C
HP
connects to TIPX.
No
internal
Connection
The TIPX and RINGX pins connect to the tip and ring leads of the two-wire interface via overvoltage
protection components and ring relay (and optional test relay).
Battery Ground,
should be tied together with AGND.
The TIPX and RINGX pins connect to the tip and ring leads of the two-wire interface via overvoltage
protection components and ring relay (and optional test relay).
Battery
supply
Voltage.
Negative with respect to AGND.
An optional second (2)
Battery Voltage
connects to this pin.
Programmable Saturation Guard.
The resistive part of the DC feed characteristic is programmed by a
resistor connected from this pin to VBAT.
No
internal
Connection
Connection for
Low Pass
filter capacitor, C
LP
. Other end of C
LP
connects to VBAT.
Input to the ring trip comparator. With DR more positive than DT the detector output, DET, is at logic level
low, indicating off-hook condition. The external ring trip network connects to this input.
Input to the ring trip comparator. With DR more positive than DT the detector output, DET, is at logic
level low, indicating off-hook condition. The external ring trip network connects to this input.
8
DET
18
LP
ERICSSON [ ERICSSON ]
