Digital Line to POTS Interface

CMX615

© 1999 Consumer Microcircuits Limited

5

D/615/4

CMX615

D4/P3

Signal

Description

Pin No.

Name

Type

11

O/P

An internally generated bias voltage of V

except when the device is in ‘Zero Power’ mode

when V

It should be

decoupled to V

to the device pins.

12

OPPIN

I/P

The non-inverting input to the uncommitted

amplifier.

13

OPNIN

I/P

The inverting input to the uncommitted amplifier.

14

OPOUT

O/P

The output of the uncommitted amplifier.

15

RING

O/P

The squarewave output of the Ringing Signal

generator.

16

V

DD

Power

The positive supply rail. Levels within the device

are proportional to this voltage. It should be

to the device pins.

Notes:

I/P

=

Input

O/P

=

Output

T/S

=

3-state Output

It is recommended that the printed circuit board is laid out with a ground plane in the CMX615 area

capacitors.