GL6965
GL6965
Telephone Speech Network with Dialer Interface
Description
The GL6965 is a bipolar integrated circuit for
use in electronic telephones.
The GL6965 has low operating voltage, it pro-
vides an excellent branch performance.
It has line voltage increasing circuit by the
exter-nal terminal. Transmitting and receiving
gains automatically vary according to the line
current.
V
L
TO1
TO0
AC BIAS
MFI
TPO
TPI 1
TPI 2
MUTE
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
V
CC
RO 1
RO 2
BT 1
RPO
RPI 1
RPI 2
REF
PADC
UP
Pin Configurations
GND 10
Features
鈥?Externally adjustable transmitting,
receiving and Sidetone gains.
鈥?Switching between transmitting output
and DTMF output is possible.
鈥?Direct interface with light and compact
ceramic transmitter-receiver is possible.
鈥?Receiver follow impedance type can
also be used.
鈥?Gain is automatically controlled accor-
ding to the line current (Auto-PAD
function).
鈥?The line voltage can be increased by
the external terminal (Up function).
鈥?PKG is 20 pin DIP.
1