 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| DIB3000-MC Mobile DVB-T COFDM demodulator ( . 8 m CMOS technology) 01 Advanced Signal Processing on Silicon MOBILE... Enhanced signal processing for mobile application : High input dynamic range (70dB on evaluation board) Dynamic FFT positioning and fast channel estimation High Doppler e ffect correction Diversity capability with easy chip connection Enhanced Co-Channel Interference compensation E i i n surrounding noise compensation ff c e t High performance with echoes outside the Guard Interval (improve SFN coverage) High Monitoring capabilities (Received Signal level, C/N, Channel Profile, BER, MER, TPS change tracking, Power and Noise for every COFDM carrier) ...CAR-TV application High performance in Single mode thanks to specific mobile signal processing blocks Large improvement in Diversity2 mode compared with Single mode : - C/N : up to +7dB - Doppler frequency : up to x2 Typical values for TU6 mode Ct iy Berlin Prs ai DVB-T mode 8k 16QAM 2/3 1/8 8k 64QAM 2/3 1/32 Receiver mode SINGLE DIVERSITY2 DIVERSITY2 (C/N)min 21 dB 14 dB 19 dB FDoppler max 90 Hz 130 Hz 120 Hz @498MHz (channel 24) 180 km/h 280 km/h 240 km/h @826MHz (channel 65) 120 km/h 170 km/h 150 km/h Scalable Power consumption : from 0.5 W to 0.8 W (for 8MHz channel bandwidth) DEV3000-D Reference design available for fast integration March 2004 The specifications and design of the product may be changed without any prior notice The DiBcom DIB3000-MC 2k/8k COFDM demodulator Integrated Circuit (IC) uses the most r ecent state of the art in Signal Processing to offer high performance for mobile, portable and fixed reception of Digital Te re t i l Television signals compliant with EN 3007441DVB-T, r sra NORDIG II and MBRAI/EICTA standard . s The DIB3000-MC is designed in advanced 0.18 m CMOS technology. The DIB3000-MC o ffers an enhanced acquisition process based on : -Synchronization and extraction of TPS parameters even with a C/N(dB) = 0 dB (usage for antenna positioning) . -Recovery up to +/- 350 kHz frequency off e ( n 8 st i k mode) which contributes to reduce the scanning time. A d g t l f l e with high rejection capability is iia itr added to cope with adjacent channels. Combined with digital interpolation, the circuit is capable of demodulating 8, 7 or 6 MHz channels while keeping the same 8 MHz analog front-end. The Co-Channel Interference is compensated thanks to an enhanced algorithm, which performs far better than the required value in NORDIG specification. The surrounding noise degradation eff c i e ie t s ff ciently treated by a dedicated algorithm. Specific functionalities are implemented to give optimized performance in portable and mobile environments : Dual IF/RF AGC control offers very high dynamic range digital control (70 dB on evaluation board). In addition the gain slopes of IF and RF amplifiers are digitally compensated to ensure an AGC loop linear behavior (usage for portability and mobility). Dynamic FFT window positioning gives the circuit the ability to track any change in the channel profile (with post or pre echoes) on a symbol per symbol basis. Accurate channel estimation for high Doppler frequency shift (up to 90 Hz for 8K, 16QAM modes i single mode; i.e 180 km/h at RF 498 MHz). n FFT leakage suppression capability makes the DIB3000-MC able to compensate for the Inter Carrier Interference due to mobile environment. Diversity combining is offered on the DIB3000-MC. The connection of the different circuits is made very simple : you only have to cascade N chips to operate in Diversity N mode ! (up to 120 Hz for 8K, 64QAM 2/3 modes in diversity2 ; i.e 240 km/h at RF 498 MHz). Evaluation Kit with Windows Softwar e Environment PC AGC-RF AGC-IF SAW Tuner Filter AGC-RF AGC-IF SAW Tuner Filter parallel port (to PC) 5 0 Diversity Data DIB3000-C M Fref clock MPEG2 TS USB interface (optional) F IF 2 IC TV Set Top Box (back-end) DIB3000-C M FIF FXtal Diversity Evaluation board (DEV3000-D) offers parallel interface for PC control, IEC connector for RF input and TTL MPEG2TS output. With optional USB1/USB2 interface and windows drivers you may actually watch TV on the PC while studying performance, and record the full TS. Configuration and monitoring of the circuit is done using a windows PC software. The high monitoring capability provides : channel profile, MER, ON after demodulation, BER and PER (Packet Error Rate) ; received field strength vs time,... La Fading ptop PC s / Do pler p 80Hz -5 -10 -15 -20 Monitoring PC Time (50m s/di v) Parc Gutenberg 2 bis, voie La Cardon 91120 Palaiseau - France Tel : +33(0)1 69 32 26 32 e-mail : info@dibcom.fr Internet : www .dibcom.net 1503, Route des Dolines 06560 Valbonne Sophia Antipolis - France |
Price & Availability of DIB3000
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |