STLC3055

® STLC3055 WLL & ISDN-TA SUBSCRIBER LINE INTERFACE CIRCUIT MONOCHIP SLIC OPTIMISED FOR WLL & ISDN-TA APPLICATIONS IMPLEMENT ALL KEY FEATURES OF THE BORSHT FUNCTION SINGLE SUPPLY (5.5 TO 15.8V) BUILT IN DC/DC CONVERTER CONTROLLER. SOFT BATTERY REVERSAL WITH PROGRAMMABLE TRANSITION TIME. ON-HOOK TRANSMISSION. PROGRAMMABLE OFF-HOOK DETECTOR THRESHOLD METERING PULSE GENERATION AND FILTER INTEGRATED RINGING INTEGRATED RING TRIP PARALLEL CONTROL INTERFACE (3.3V LOGIC LEVEL) PROGRAMMABLE CONSTANT CURRENT FEED SURFACE MOUNT PACKAGE INTEGRATED THERMAL PROTECTION -40 TO +85°C OPERATING RANGE BLOCK DIAGRAM D0 D1 D2 TQFP44 ORDERING NUMBERS: STLC3055Q STLC3055QTR DESCRIPTION The STLC3055 is a SLIC device specifically designed for WLL (Wireless Local Loop) and ISDNTerminal Adaptors. One of the distinctive characteristic of this device is the ability to operate with a single supply voltage (from +5.5V to +15.8V) and self generate the negative battery by means of an on chip DC/DC converter controller that drives an external MOS switch. The battery level is properly adjusted depending on the operating mode. A useful characteristic for DET September 2000 TX RX ZAC1 ZAC RS ZB CKTTX CTTX1 CTTX2 FTTX INPUT LOGIC AND DECODER Status and functions AC PROC SUPERVISION OUTPUT LOGIC LINE DRIVER OUTPUT STAGE BGND TIP RING TTX PROC REFERENCE Vcc Vss Agnd DC PROC CREV CSVR DC/DC CONV. CLK RSENSE GATE VF VOLT. REG. Vbat CVCC VPOS VBAT RTTX CAC ILTF RD IREF RLIM RTH AGND 1/22 STLC305...