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OM8373 Datasheet(PDF) 72 Page - NXP Semiconductors |
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OM8373 Datasheet(HTML) 72 Page - NXP Semiconductors |
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72 / 108 page  2004 Jan 15 72 Philips Semiconductors Tentative Device Specification TV signal processor-Teletext decoder with embedded µ-Controller OM8373; OM8378 FAST INSERTION S.3.1 input voltage no data insertion −− 0.4 V S.3.2 data insertion 0.9 −− V S.3.3 maximum input pulse insertion −− 3.0 V S.3.4 delay time from RGB in to RGB out data insertion; note 6 −− 20 ns S.3.5 delay difference between insertion to RGB out and RGB in to RGB out data insertion; note 6 −− 20 ns S.3.6 input current −− 0.2 mA S.3.7 suppression of internal RGB signals notes 6 and 28; insertion; fi =0to5MHz − 55 − dB S.3.8 suppression of external RGB signals notes 6 and 28; no insertion; fi =0to5MHz − 55 − dB Chrominance and Luminance filters CHROMINANCE TRAP CIRCUIT; NOTE 32 F.1.1 trap frequency − fosc − MHz F.1.2 Bandwidth at fSC = 3.58 MHz −3 dB − 2.8 − MHz F.1.3 Bandwidth at fSC = 4.43 MHz −3 dB − 3.4 − MHz F.1.4 colour subcarrier rejection 24 26 − dB CHROMINANCE BANDPASS CIRCUIT F.2.1 centre frequency (CB = 0) − fosc − MHz F.2.2 centre frequency (CB = 1) − 1.1 ×f osc − MHz F.2.3 bandpass quality factor − 3 − Y DELAY LINE F.4.1 delay time note 6 − 480 − ns F.4.2 tuning range delay time 8 steps −160 − +160 ns F.4.3 bandwidth of internal delay line note 6 8 −− MHz Picture Improvement Features PEAKING CONTROL; NOTE 33 P.1.1 width of preshoot or overshoot note 3 − 160 − ns P.1.2 peaking signal compression threshold − 50 − IRE P.1.3 overshoot at maximum peaking positive − 45 − % P.1.4 negative − 80 − % P.1.5 Ratio negative/positive overshoot; note 34 − 1.8 − P.1.6 peaking control curve 63 steps see Fig.24 NUMBER PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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