ST75951

ST75951 V.34/56K ANALOG FRONT END . . . . . . . . . . . . . . . . V.34/56K MODEM ANALOG FRONT-END (AFE) 16 BITS OVERSAMPLING SIGMA DELTA A/D AND D/A CONVERTERS 85dB DYNAMIC RANGE PROGRAMMABLE SAMPLING FREQUENCY AUXILIARY ANALOG INPUT MODEM SIDE OF SILICON DATA ACCESS ARRANGEMENT (DAA) INTEGRATED WITH AFE KRYPTON ISOLATION INC. PATENTED TECHNOLOGY ELIMINATE TRANSFORMER OR LINEAR OPTO-COUPLERS RING DETECT, LINE IN USE, CLID AND OVER LOOP CURRENT DETECT 4 GPIO ASSOCIATED WITH 1 GENERAL PURPOSE INTERRUPT OUTPUT ANALOG AND DIGITAL LOOP-BACK MODE SYNCHRONOUS SERIAL INTERFACE FOR PROCESSORS DATA EXCHANGE ON CHIP REFERENCE VOLTAGE SINGLE POWER SUPPLY RANGE : 2.7V TO 5.25V LOW POWER CONSUMPTION : 40mW @ 3.3V TQFP48 PACKAGE 0.5µM CMOS PROCESS TQFP48 (7 x 7 x 1.4mm) (Full Plastic Quad Flat Pack) ORDER CODE : ST75951 DESCRIPTION ST75951 is an analog front-end designed to implement modems application up to 56Kbps. ST75951 interfaces between DSP or HSP signals and capacitive isolation barrier. A complete D.A.A. is made with ST952 which interfaces between capacitive isolation barrier and the telephone line. Figure 1 Tip Digital 75951-30.EPS ST75951 Digital ST952 Ring It integrates a high resolution A/D and D/A converter and incorporates Krypton Isolation Inc. patented silicon D.A.A. technology. February 1999 1/21 ST75951 PIN CONNECTIONS TSTA2 TSTA1 VCMS VCMP NC NC D1 D2 D3 D4 D5 D6 36 35 34 33 32 31 30 29 28 27 26 25 NC AGND2 VCM AVDD AUXIN HM RESET TS TSTD1 DIN DOUT NC 37 38 39 4...