STLC30R80 Datasheet, PDF (1/13 Pages) STMicroelectronics – INTEGRATED RINGING SLIC FOR SHORT LOOP APPLICATIONS

®
STLC30R80
INTEGRATED RINGING SLIC
FOR SHORT LOOP APPLICATIONS
MONOCHIP SLIC SUITABLE FOR SHORT
LOOP APPLICATIONS
IMPLEMENTES ALL KEY FEATURES OF
THE BORSHT FUNCTION
INTEGRATED RINGING
SOFT BATTERY REVERSAL WITH PRO-
GRAMMABLE TRANSITION TIME
ON HOOK TRANSMISSION
LOW POWER DISSIPATION IN ALL OPER-
ATING MODES
AUTOMATIC DUAL BATTERY OPERATION
INTEGRATED RING TRIP DETECTION
METERING PULSE INJECTION
LOOP START, GROUND START FEATURES
SURFACE MOUNT PACKAGE
-40 TO +85°C OPERATING RANGE
DESCRIPTION
The STLC30R80 is a SLIC device suitable for
short loop applications. The SLIC provides the
BLOCK DIAGRAM
TQFP44 (10 x 10)
ORDERING NUMBER: STLC30R80
generation of the ringing signal and the standard
battery feeding with full programmability of the DC
characteristic.
In particular two external resistors allow to set the
limiting current value (up to 50mA) and the value
of the resistive feeding when not in constant cur-
rent region.
D2 D1 D0
CRT RT1 RT2
DET
GDK/AL
CSIN
CSOUT
RES
SW
TTXIN
ZB
TX
RX
LINE STATUS
LOGIC
INTERFACE
&
DECODER
COMMANDS
SUPERVISION
ILT
LINE
ILL
INTERFACE
AC
PROCESSOR
REFERENCE
&
BIAS SWITCHING
AC+
DC
AC ₊
DC
DC
PROCESSOR
TIP
RING
BGND
VREG
ILTF
RLIM
RTH
ZAC1 ZAC RS CAC IREF V_CC V_DD AGND CREV CSVR VBAT BASE RDC ^D99TL431AMOD
November 2001
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