VES1993

VES 1993 SINGLE CHIP SATELLITE CHANNEL RECEIVER FEATURES DSS and DVB-S compatible single chip demodulator & forward error correction. Dual 6-bit ADC on chip. PLL for crystal frequency multiplication. Variable rate BPSK/QPSK coherent demodulator. Modulation rate from 1 to 45MBaud. Automatic Gain Control output. Digital symbol timing recovery : Acquisition range up to ±240ppm Digital carrier recovery : Acquisition range up to ±12% of symbol rate Half Nyquist baseband filters on chip roll-off = 0.35 for DVB and 0.2 for DSS Channel quality estimation. Viterbi decoder : Supported rates : from 1/2 to 8/9. Constraint length K = 7 with G1 = 1718 G2 = 1338 VBER measurement provided. Convolutional deinterleaver and Reed Solomon decoder according to DVB and DSS specifications. Automatic Frame Synchronization. Selectable DVB-S descrambling. I2C bus interface. 100-pin MQFP package. CMOS technology (0.35 µm 3.3V). APPLICATIONS DSS receivers. DVB-S receivers (ETS 300-421). Direct Broadcast Satellite (DBS). DESCRIPTION The VES 1993 is a single-chip channel receiver for satellite television reception which matches both DSS and DVB-S standards. The device contains a dual 6-bit flash analog to digital converter, variable rate BPSK/QPSK coherent demodulator and Forward Error Correction functions.The ADCs directly interface with I and Q analog baseband signals. After A to D conversion, the VES 1993 implements a bank of cascadable filters as well as antial...