CXD1961AQ Datasheet, PDF (1/33 Pages) Sony Corporation – DVB-S Frontend IC (QPSK demodulation + FEC)

CXD1961AQ
DVB-S Frontend IC (QPSK demodulation + FEC) Preliminary
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Description
The CXD1961AQ is a single chip DVB compliant
Satellite Broadcasting Frontend IC, including dual
A/D converter for analog baseband I/Q input, QPSK
demodulator, Viterbi decoder Reed-Solomon decoder
and Energy Dispersal descrambler. It is suitable for
use in a DVB Integrated Receiver Decoder.
100 pin QFP (Plastic)
Features
• Dual 6 bit A/D converter
• QPSK demodulator
Multi-symbol rate operation
Nyquist Roll off filter (α = 0.35)
Clock recovery circuit
Carrier recovery circuit
AGC control (PWM output)
• Viterbi decoder
Absolute Maximum Rating (Ta = 25°C, GND = 0V)
• Power Supply
VDD
–0.5 to +4.6
V
• Input Voltage
VIN –0.5 to VDD + 0.5 V
• Output Voltage
VOUT –0.5 to VDD + 0.5 V
• I/O Voltage
VI/O –0.5 to VDD + 0.5 V
• CPU I/F pin
Vcpuif –0.5 to +5.5 V
• Storage Temperature Tstg –55 to +150 °C
Constraint length 7
Truncation length 144
BER monitor of QPSK demodulator output
• Frame synchronization circuit
• Convolutional de-interleaver
• Reed-Solomon decoder (204,188)
Recommended Operating Condition
(Ta = 0 to 75°C, GND = 0V)
• Power Supply
VDD
3.15 to 3.45
V
• Input High level
VIH 0.7 × VDD to VDD + 0.5 V
• Input Low level
VIL 0.3 to 0.2 × VDD V
BER monitor of Viterbi decoder output
• Energy dispersal descrambler
• CPU interface circuit
I²C bus interface (5V input capability)
• Package
QFP 100pin
• Operating frequency 20 to 30MSPS
• Power consumption 750mW (@3.3V 30MSPS typical)
• Process
0.4µm CMOS Technology
Application
DVB-S Set Top Box (Satellite)
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
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PE97854-PS