PS20251 Datasheet, PDF (1/25 Pages) List of Unclassifed Manufacturers – Dual COFDM demodulator with PID filters and MRC diversity

PS20251
Dual COFDM demodulator with PID filters and
MRC diversity
Data Sheet
1 System
Data Sheet 292114 issue 1
1.1 Features
Ordering Information
• Dual Channel DVB-T Demodulator optimised for:
o Watch and Record applications
PS20251C1L1A5 80 Pin LQFP* Trays
*Pb Free Matte Tin
o Portable diversity applications
• Diversity mode
• Dual Parallel/serial MPEG stream output
-10°C to +80°C
• Optional PID Filtered transport stream multiplexing to one MPEG port
• Nordig Unified and ETSI 300 744 compliant
• Superior Single Frequency Network performance
• Unique active impulse-noise filtering
• Single SAW operation on 6, 7 & 8 MHz OFDM
• RF level detect ADC on-chip to indicate signal power for each channel
• Excellent performance with any echo profile: pre, post, inside or outside the guard interval
• Automatic co-channel and adjacent-channel interference suppression
• Fast AGC and good Doppler performance for portable applications
• Large frequency capture range to enable channel acquisition with triple offsets
• IF sampling at 36.17, 43.5 or 5 - 10 MHz from a single crystal frequency Channel bandwidth of 6, 7 & 8
MHz
• Blind acquisition capability (including 2K/8K mode detect)
• Automatic spectral inversion detection
• Fast auto-scan and acquisition technology
• Very low software overhead
• Access to channel SNR, pre- and post-Viterbi bit error rates
• On-chip PLL clock generation using a single 20.48MHz crystal
• Hardware MPEG2 PID filters (enables low bandwidth operation, can be turned off) 8 general purpose
ports, 2 dedicated and 6 shared function
• 3.3/1.2V operation
• 80 pin LQFP
• Low external component count
• Industrial Temperature range -10 to 80°C
Applications
• Terrestrial PC applications
• Digital terrestrial TV set-top boxes
• Digital terrestrial integrated televisions
• Portable TV receivers
PLESSEY SEMICONDUCTORS LTD
TAMERTON ROAD | ROBOROUGH | PLYMOUTH | DEVON | PL6 7BQ
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