- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381492 > AT76C651 (ATMEL CORP) Digital Reception/Transmission Integrated DVB compliant QAM Demodulator(兼容DVB的正交振幅調(diào)制解調(diào)電路) PDF資料下載
參數(shù)資料
| 型號： | AT76C651 |
| 廠商： | ATMEL CORP |
| 元件分類： | 消費家電 |
| 英文描述： | Digital Reception/Transmission Integrated DVB compliant QAM Demodulator(兼容DVB的正交振幅調(diào)制解調(diào)電路) |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | TQFP-100 |
| 文件頁數(shù)： | 1/37頁 |
| 文件大?。?/td> | 497K |
| 代理商： | AT76C651 |
當前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁
1
Features
DAVIC/DVB
/ETS300.429/ITU-T J.83 Annex A, C Fully Compliant
Direct IF Sampling (No Second IF Down Conversion Required) or Baseband Input
Internal DC Offset Compensation
1024, 512, 256, 128, 64, 32, 16 QAM and QPSK Demodulation
Roll-off Factor Adapted to Raised-cosine Filtered Signal (0.11 to 0.4)
Fully Digital Timing Recovery
Variable Symbol Rate Recovery
Anti-aliasing Continuously Variable Digital Filtering with Symbol Rate Adaptive
Bandwidth (1 to 18.75M baud at the Same Sampling Frequency)
Fully Digital Carrier Recovery (Coherent or Differential for QPSK)
Robust Equalizer Acquisition
Selectable Transversal or Decision Feedback Equalizer
Dual Phase/Frequency Offset Recovery up to 12% of the Symbol Rate
with No Degradation
MPEG2 Frame Synchronization
Reed-Solomon Decoder (204, 188, 8)
De-interleaving (I = 12 and I = 17)
Energy Dispersal Descrambling
I
2
C Interface Switch for Separate Bi-directional I
2
C Bus-to-Tuner to Avoid
Phase Noise Problems Due to I
2
Integrated Clock Reference for Tuner, Especially Designed for NIU in CAN
Two AGCs: Analog and Digital Gains
Three Program Identifier (PID) Filtering
IRQ Interrupt Request Generation to Simplify Monitoring
Bit Error Rate and Packet Error Rate Monitoring
Signal-to-noise Ratio Estimation, Residual Phase Noise Estimation
Automatic Spectrum Inversion
JTAG Support
0.35 micron CMOS Technology, 3.3V Operation
100-lead TQFP Package
Description
The AT76C651 is a DVB-compliant Quadrature Amplitude Modulation (QAM) demod-
ulation circuit, which can be used in DVB and other applications using Quadrature
Phase Shift Keying (QPSK) or QAM transmission systems. The signal, after output
from tuner and adjacent channels rejection filter, is externally sampled at IF
frequency.
The signal is converted to digital format by an analog-to-digital converter and goes
through several processing steps required for demodulation: automatic gain control,
baseband down conversion, timing recovery with anti-aliasing filtering, square root
raised-cosine receive filtering, carrier recovery and digital gain control and equaliza-
tion (linear and decision feedback dual structure). The output from demodulation then
goes through forward error decoding: DVB/DAVIC de-mapping, frame synchroniza-
tion, de-interleaving, Reed-Solomon decoding and spectrum de-randomization. The
output before decoding may also be output directly for use with post-processing
devices in applications other than DVB.
An additional block situated in the back-end may be used to filter out programmable
PIDs, which provides additional flexibility in interactive solutions or DVB data-broad-
cast PC receive cards. It is especially designed for modem implementations with a 24-
bit mask on one PID (medium access control) and can be used for return channel
implementation.
Digital
Reception/
Transmission IC
Integrated DVB–
compliant QAM
Demodulator
AT76C651
Rev. 1293C
–
06/00
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT76C712 | High-speed (48 MHz) AVR- based Bridging Device |
| AT76C713 | High-speed (48 MHz) AVR Microcontroller with USB Interface |
| AT76C901 | Wireless VoIP Phone-based on the 802.11 Standard Processor AT76C901 Summary |
| AT76C902 | Wireless VoIP Processor Implementing the 802.11 Standard |
| AT77C101B | Thermal Fingerprint Sensor with Sensing Area and Digital Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT76C651B | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Digital Reception/ Transmission IC Integrated DVB compliant QAM Demodulator |
| AT76C711 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecomm/Datacomm |
| AT76C711-0T64 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Controller Miscellaneous - Datasheet Reference |
| AT76C711-0Z64 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Controller Miscellaneous - Datasheet Reference |
| AT76C712 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High-speed (48 MHz) AVR- based Bridging Device |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。