1

PBL 385 82

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.

Figure 1. Functional diagram. DIP package.

18-pin plastic DIP

3

1

4

+

2

Telephone

line

1

2

14,16

15

18

17

RECEIVE

TRANSMIT

PBL 38582

Reference

Limiter

DC

supply

Fast start - up

6

5,

20-pin plastic SO

16-pin plastic SO

December 1999