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SA2532CS Arkusz danych(PDF) 1 Page - Sames

Numer części SA2532CS
Szczegółowy opis  VERSATILE SINGLE CHIP TELEPHONE
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SA2532
1/22
sames
VERSATILE SINGLE CHIP TELEPHONE
4153
SA2532 A/C/U
PDS039-SA2532-001
Rev. C
23-10-1995
FEATURES
n Speech circuit, LD/MF Dialler and Tone
Ringer on one 28 pin CMOS chip
n Soft clip to avoid harsh distortion
n Line Loss Compensation selectable by
pin option
n Power down mode
n Versatile applications for different PTT
demands
n 31 digit last number redial
n Sliding Cursor protocol with comparison
n 2 Flash keys, 100 ms and 280 ms (option
600 ms)
n Pause key for 3 sec Auto Pause or Wait
Function
n Ring frequency discrimination
n Operating range from 13 to 100 mA
(down to 5 mA with reduced perform-
ance)
n Low noise (max. -72dBmp)
n Real or Complex impedance on chip pro-
grammable
n LD/MF switchable dialling
n On chip MF filter (CEPT CS 203 compat-
ible)
n 3-tone melody generator with selectable
repetition rates
1/22
GENERAL DESCRIPTION
The SA2532 is a CMOS integrated circuit that
contains all the functions needed to form a
high performance electronic telephone.
The device incorporates LD/MF dialling,
melody generation, ring frequency discrimi-
nation and a high quality speech circuit.
A RAM is on chip for a 31 digit last number
redial. The sliding cursor procedure makes
Last Number Redial easy behind a PABX.
The versatility of the circuit is provided by on
chip programmability and a few external com-
ponents. This allows easy adaption to differ-
ent PTT requirements without changing the
PCB of the telephone.
PACKAGE
Available in 28 pin DIP and SOIC
SA2532
HS DP
DR-00975
OSC
C3
C4
RR
14
AGND
STB
LLC
CI
MO
DD
RO2
RO1
LS
V
1
R2
15
R4
R3
C1
C2
M2
MODE
M1
FCI
R1
28
SS
V
CS
RI
LI


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