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 Computers, Set Top Boxes for Digital Television (Satellite and Cable).

To comply with such applications STLC7550 is powered nominally at 3V only.

■ 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

■ 83dB SIGNAL TO NOISE RATIO FOR SAMPLING FREQUENCY UP TO 9.6kHz @ 3V

■ 87dB 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 30mW OPERATING POWER 3V

■ STAND-BY MODE POWER CONSUMPTION LESS THAN 3μW at 3V

■ PROGRAMMING SAMPLING FREQUENCY

■ MAX. SAMPLING FREQUENCY : 45kHz

■ SYNCHRONOUS SERIAL INTERFACE FOR PROCESSOR DATAS EXCHANGE. MASTER OR SLAVE OPERATIONS

■ 0.50μm CMOS PROCESS

■ TQFP44 PACKAGE

■ STLC7546 MODE OF OPERATION COMPATIBLE

STLC7550TQF7屬于集成電路（IC） > 模擬前端（AFE）。意法半導(dǎo)體（ST）集團(tuán)制造生產(chǎn)的STLC7550TQF7模擬前端（AFE）模擬前端 (AFE) 是一種用于信號調(diào)節(jié)的半導(dǎo)體器件，由模擬放大器、運(yùn)算放大器、濾波器和集成電路構(gòu)成。這種可配置功能塊能連接各種傳感器。分辨率范圍從 8 位至 42 位不等，通道數(shù)范圍為 1 至 256 個(gè)。