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L3000SX-77 Datasheet

  • L3000SX-77

  • SUBSCRIBER LINE INTERFACE KIT

  • 29頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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L3000S
L3030
SUBSCRIBER LINE INTERFACE KIT
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PRELIMINARY DAT A
PROGRAMMABLE DC FEEDING RESIS-TAN-
CE AND LIMITINGCURRENT (fourvalues avai-
lable)
THREE OPERATING MODES :
STAND-BY, CONVERSATION, RINGING
NORMAL/BOOSTBATTERY, DIRECT/REVER-
SE POLARITY
SIGNALLING FUNCTION (off-hook/GND-key)
FILTERED OFF-HOOK DETECTION IN
STAND-BY (10ms)
QUICK OFF-HOOK DETECTION IN CONVER-
SATION (< 1ms) FOR LOW DIAL PULSE DE-
TECTION DISTORTION
HYBRID FUNCTION
RINGING GENERATION WITH QUASI ZERO
OUTPUT IMPEDANCE, ZERO CROSSING IN-
JECTION (no ext. relay needed) AND RING
TRIP DETECTION
AUTOMATIC RINGING STOP WHEN OFF-
HOOK IS DETECTED
PARALLEL AND SERIAL DIGITAL INTERFA-
CES
TELETAXE SIGNALINJECTION (2V
RMS
/5V
RMS
)
LOW NUMBER OF EXTERNAL COMPO-
NENTS
GOOD REJECTION OF THE NOISE ON BAT-
TERY VOLTAGE (20dB at 10Hz and 35dB at
1kHz)
POSSIBILITY TO WORK ALSO WITH HIGH
COMMON MODE CURRENTS
INTEGRATED THERMAL PROTECTION WITH
THERMAL OVERLOAD INDICATION
SURFACE MOUNT PACKAGE
(PLCC44 + PowerSO-20)
PLCC44
FLEXIWATT15
PowerSO20
slug-up
slug-down
ORDERING NUMBERS :
L3030 (PLCC44)
L3000SX-VM (FLEXIWATT15)
L3000SX (PowerSO20 slug-up)
L3000SX-77 (PowerSO20 slug-down)
DESCRIPTION
The ST SLIC KIT (L3000S/L3030) is a set of solid
state devices designed to integratemain of the fun-
ctions needed to interface a telephone line. It con-
sists of 2 integrated devices : the L3000S line
interface circuit and the L3030 control unit.
This kit performs the main features of the BORSHT
functions :
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Battery feed
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Ringing
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Signalling
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Hybrid
June 1997
Additional functions, such as battery reversal, extra
batteryuse, line overvoltagesensing and metering-
pulse injection are also featured ; most external
characteristics,as AC and DC impedances,are pro-
grammable with external components.The SLIC in-
jects ringing in balanced mode and for that, as well
as for the operation in battery boosted, a positive
battery voltage shall be available on the subscriber
card. As the right ringing signal amplification both in
voltage and in current is provided by SLIC, the ring
signal generatorshall onlyprovide a low level signal
(0.285Vrms).
This kit is fabricatedusing a 140V Bipolar technolo-
gy for L3000Sand a 12V Bipolar I
2
L technologyfor
L3030.
L3030 is available PLCC44 and L3000S in both
FLEXIWATT15 and PowerSO-20 for surfacemount
application.
This kit is suitable for all the following applications:
C.O. (CentralOffice),DLC (Digital LoopCarrier) and
high range PABX (Private Automatic Branch Ex-
change).
1/29

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