STLC7550 Datasheet | STMicroelectronics

LOW POWER LOW VOLTAGE ANALOG FRONT END - - - . GENERAL PURPOSE SIGNAL PROCESSING ANALOG FRONT END (AFE) TARGETED FOR V.34bis MODEM AND 56Kbps MODEM APPLICATIONS 16-BIT OVERSAMPLING Σ∆ A/D AND D/A CONVERTERS 83d B SIGNAL TO NOISE RATIO FOR SAMPLING FREQUENCY UP TO 9.6k Hz @ 3V 87d B DYNAMIC RANGE @ 3V FILTER BANDWIDTHS : 0.425 x THE SAMPLING FREQUENCY ON-CHIP REFERENCE VOLTAGE SINGLE POWER SUPPLY RANGE : 2.7 TO 5.5V LOW POWER CONSUMPTION LESS THAN 30m W OPERATING POWER 3V STAND-BY MODE POWER CONSUMPTION LESS THAN 3µW at 3V PROGRAMMING SAMPLING FREQUENCY MAX. SAMPLING FREQUENCY : 45k Hz SYNCHRONOUS SERIAL INTERFACE FOR PROCESSOR DATAS EXCHANGE. MASTER OR SLAVE OPERATIONS 0.50µm CMOS PROCESS TQFP44 PACKAGE STLC7546 MODE OF OPERATION PATIBLE Maximum Power Dissipation 30m W is well suited for Battery operations. In case of battery low, STLC7550 will continue to work even at a 2.7V level. STLC7550 also provides clock generator for all sampling frequencies requested for V.34bis and 56Kbps applications. This new AFE can also be used for PC mother boards or add-on cards or stand alone MODEMs. It can be used in a master mode or slave mode. The slave mode eases multi AFE architecture design in saving external logical glue. TQFP44 (10 x 10 x 1.40 mm) (Full Plastic Quad Flat Pack) ORDER CODE : STLC7550TQFP DESCRIPTION The STLC7550 is a single chip Analog Front-end (AFE) designed to implement modems up to 56Kbps. It has been especially designed for host processing application in which the modulation software (V.34bis, 56Kbps) is performed by the main application processor : Pentium, Risc or DSP processors. The main target of this device is stand alone appliances as Hand Held PC (HPC), Personnal Digital Assistants (PDA), Webphones, Network puters, Set Top Boxes for Digital Television (Satellite and Cable). To ply with such applications STLC7550 is powered nominally at 3V only. November 1998 TQFP48 (7 x 7 x 1.40mm) (Full Plastic Quad Flat...