U3761MB-AFNG3 TEMIC [TEMIC Semiconductors], U3761MB-AFNG3 Datasheet - Page 7

• Manufacturer Part Number: U3761MB-AFNG3
• Description: Low Voltage Standard Telephone Circuit with 13 Memories
• Manufacturer: TEMIC [TEMIC Semiconductors]

TELEFUNKEN Semiconductors
Rev. A2, 23-Apr-97
SDIP40
23
24
25
26
27
28
29
SSO44
25
26
27
28
29
30
31
PRIVACY
VRIAC
VRING
Symbol
AGC
THA
RCK
ST
AGC
VRING
RDC
VRIAC
THA
Preliminary Information
OUT
RCK
PRIVACY
ST
PD
PD
PD
Configuration
PD
PD
VRIAC
6V
6V
Ê
30V
50V
PD
50V
6V
6V
PD
Ê Ê
12K
16V
PD
Ê Ê
6V
6V
6.5K
3.4V
Ê Ê
20K
140K
70K
10K
40K
Ê
Ê
Ê
0.6V
VI
Ê Ê
Ê Ê
Ê Ê
Ê
0.8V
200
1V
PD
VL
Input for handset mute
The output of the sidetone
cancellation signal, which requires
a balanced impedance of 8 to
10 times the subscribers line
impedance to be connected to
Pin VL.
Ringer threshold adjustment
The range of transmit and receive
gain variations between short and
long loops may be adjusted by
connecting a resistor R
this pin to (GND). This pin can be
left open to set AGC out of action.
Ringing supply
DC supply voltage for the tone
ringer is limited to 30 V with
integrated Z-diode.
RC clock oscillator for ringer
U3761MB
Function
AGC
from
7 (23)