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參數(shù)資料
| 型號： | CXD1961AQ |
| 廠商： | Sony Corporation |
| 英文描述： | DVB-S Frontend IC (QPSK demodulation + FEC) |
| 中文描述： | 的DVB - S前端集成電路（QPSK解調(diào)前向糾錯） |
| 文件頁數(shù)： | 1/33頁 |
| 文件大小： | 294K |
| 代理商： | CXD1961AQ |
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DVB-S Frontend IC (QPSK demodulation + FEC)
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.
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
Constraint length 7
Truncation length 144
BER monitor of QPSK demodulator output
Frame synchronization circuit
Convolutional de-interleaver
Reed-Solomon decoder (204,188)
BER monitor of Viterbi decoder output
Energy dispersal descrambler
CPU interface circuit
I
2
C bus interface (5V input capability)
Package
Operating frequency
Power consumption
Process
QFP 100pin
20 to 30MSPS
750mW (@3.3V 30MSPS typical)
0.4μm CMOS Technology
Application
DVB-S Set Top Box (Satellite)
Absolute Maximum Rating
(Ta = 25°C, GND = 0V)
Power Supply
V
DD
Input Voltage
V
IN
Output Voltage
V
OUT
–0.5 to V
DD
+ 0.5
I/O Voltage
V
I/O
CPU I/F pin
Vcpuif
Storage Temperature Tstg
–0.5 to +4.6
–0.5 to V
DD
+ 0.5
V
V
V
V
V
–0.5 to V
DD
+ 0.5
–0.5 to +5.5
–55 to +150
°C
Recommended Operating Condition
(Ta = 0 to 75°C, GND = 0V)
V
DD
3.15 to 3.45
V
IH
0.7
×
V
DD
to V
DD
+ 0.5V
V
IL
0.3 to 0.2
×
V
DD
Power Supply
Input High level
Input Low level
V
V
– 1 –
PE97854-PS
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.
CXD1961AQ
Preliminary
100 pin QFP (Plastic)
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