ROHM BA8201F, BA8201 Datasheet

Communication ICs

Pseudo inductance for telephones

BA8201 / BA8201F

The BA8201 and BA8201F are ICs with a choke coil action, capable of extracting the DC current from a telephone line
while maintaining a high inductance on the telephone line side. This eliminates the need for a choke coil, and facilitates
use of the telephone set line in a variety of applications.

Applications
Household telephones

Features

1) Corresponds to choke coil of several henries.

2) Extracts DC current while maintaining high induc­tance on telephone line side.

3) Capable of extracting large output current.

4) Wide dynamic range.

5) Two output voltage modes available for selection.

 Line voltage seek mode
 Constant voltage mode

6) DIP 8 and SOP 8 pin packages available.

Absolute maximum ratings (Ta = 25C)

Recommended operating conditions (Ta = 25C)

300

Communication ICs BA8201 / BA8201F

Block diagram

301

Communication ICs BA8201 / BA8201F

Pin descriptions

302