L3913 Datasheet

IC型號(hào)：
L3913
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202.35KB
PDF頁數(shù)：
14頁
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ETC

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L3913

MONOCHIP TELEPHONE

ADVANCE DATA

ADJUSTABLE SLOPE OF DC CHARAC-

TERISTIC

ADJUSTABLE AUTOMATIC LINE LENGHT

RECEIVING AND SENDING GAIN CONTROL

(NOT USED IN DTMF), WITH POSSIBILITY

OF FIXED GAIN (PABX).

ADJUSTABLE AUTOMATIC LINE LENGHT

TRACKING ANTISIDETONE SYSTEM

ADJUSTABLE DYNAMIC IMPEDANCE

STABILIZED POWER SUPPLY FOR PERIPH-

ERALS

CONFIDENCE LEVEL DURING PULSE AND

DTMF DIALLING

RECEIVING AMPLIFIER FOR DYNAMIC OR

PIEZO-ELECTRIC EARPIECES

HIGH IMPEDANCE MICROPHONE INPUTS

(80K鈩?MIN. IN SYMMETRICAL AND 40K鈩?/div>

MIN. IN ASYMMETRICAL) SUITABLE FOR

DYNAMIC, MAGNETIC, PIEZO-ELECTRIC

OR ELECTRET MICROPHONE

DYNAMIC LIMITING IN SENDING (ANTICLIP-

PING) PREVENTS DISTORTION OF LINE

SIGNAL AND SIDETONE

ANTISQUELCH SYSTEM IN SENDING PRE-

VENTS 鈥漅OOM NOISE鈥?TO BE TRANSMIT-

TED, AND IMPROVES THE ANTI-LARSEN

EFFICIENCY

LOUDHEARING PROGRAMMABLE GAIN IN

8 STEPS OF 3 dB USING THE SERIAL BUS,

OR LINEARLY USING A POTENTIOMETER

ANTILARSEN SYSTEM WHICH DOESN鈥橳

CUT THE RECEIVING VOICE

ANTIDISTORTION SYSTEM BY AUTOMATIC

GAIN CONTROL VERSUS AVAILABLE

LOUDHEARING CURRENT

RINGING BALANCED OUTPUT IN DMOS

FOR HIGHER POWER CAPABILITY

4 RINGING TONES ADJUSTABLE WITHOUT

EXTERNAL COMPONENTS

INTERNAL SPEED UP CIRCUIT PERMITS A

FASTER CHARGE OF V

AND V

RAM

CA-

PACITORS

LOGIC BOUNCE ELIMINATION

PULSE DIALLING 66/33 OR 60/40 OR DTMF DI-

ALLING SELECTABLE BY PROGRAMMING PIN

ADJUSTABLE FLASHING DURATION (90ms

or 265ms)

September 1993

PLCC-44

PIN CONNECTION

(top view)

RESET

FLASH

DC/FV

BEAT

PAIR

VIR

OUT2

OUT1

ZALL

REC

ZALC

ACL

MOD

EM/MF

IEA

V RAM

VCC

VEA

HP2

GND

HP1

EFF

I REF

SELF

RGAB

ZAC

EM/FILT

D93TL022

INTERDIGITAL PAUSE

CONFIDENCE TONE (440Hz)

LAST NUMBER RADIAL UP TO 23 DIGITS

STANDARD LOW COST CERAMIC 455KHz

BINARY DATA INPUT IN SERIAL MODE

TEST MODE CAPABILITY

DESCRIPTION

The L3913 monochip is a BIPOLAR CMOS-

DMOS (BCD) integrated circuit that performs all

the speech and line interface functions required in

an electronic telephone set, the ringing function

with 4 melodies, the pulse and DTMF dialling with

redial, the loudhearing with antilarsen and antidis-

tortion systems, a keyboard interface with the

possilbility to interface with an external microcon-

troller using the internal serial bus, and a power

supply for peripheral.

1/14

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

型號(hào)

版本

描述

廠商

下載
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