PBL 385 82
December 1999
PBL 38582
Telephone Line interface circuit for
DECT, DAM, CT
Unisolated or Isolated
Description
PBL 38582 is a monolithic bipolar integrated circuit for use as telephone line interface in
unisolated or isolated DECT and other cordless telephone residential base stations and
in analog / digital answering machines or as second line in an unisolated DECT telephone
base station.
Transmit and receive gains are set by external components. On / Off switchable gain,
related to line, regulation for different current feeds can be set by external resistors.
Typical current feeds as 48 V, 2 • 200 ohm, 48 V 2 • 400 ohm and 60 V 2 • 600 ohm can
be handled. Application dependent parameters such as line balance, impedance to the
line and frequency response are set by external components. Parameters are set
independently which results in an easy adoption for various market needs.
Key Features
• Minimum number of inexpensive
external components, 5 capacitors
and 4 resistors.
• Current range
5 - 130 mA(DIL),
5 - 100 mA(20-pin SO)
5 - 70 mA(16-pin SO) 385 82/2
• Operation voltage range
down to 2 V.
• Short start-up time.
P
B
L
3
8
5
8
1
PBL 38582
Fast start - up
P
B
L
18
38
20-pin plastic SO
DC
supply
+
6
3
2
15
5,
14,16
RECEIVE
Reference
17
Limiter
5
4
1
2
TRANSMIT
P
B
18-pin plastic DIP
Figure 1. Functional diagram. DIP package.
L
38
Telephone
line
58
2
82
2
16-pin plastic SO
1
ERICSSON [ ERICSSON ]
