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CXD1961AQ

DVB-S Frontend IC (QPSK demodulation + FEC)

Sony Semiconductor 

CXD1961AQ

DVB-S Frontend IC (QPSK demodulation + FEC) Preliminary

For the availability of this product, please contact the sales office.

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.

–1–

PE97854-PS

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