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TDA8501 Fiches technique(PDF) 10 Page - NXP Semiconductors |
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TDA8501 Fiches technique(HTML) 10 Page - NXP Semiconductors |
10 / 30 page April 1993 10 Philips Semiconductors Preliminary specification PAL/NTSC encoder TDA8501 Fig.9 Nominal Y + SYNC signal level at pin 22 (PAL mode). Fig.10 Nominal Y +SYNC signal level at pin 22 (NTSC mode). NTSC option with internal set-up generation Pin 4 connected to ground or left open-circuit. The set-up is generated internally and the input signals have the values already specified in section Input stage. The set-up is not suppressed during vertical sync. NTSC option without internal set-up generation Pin 4 connected to VCC. This option places some restrictions on the input signals as follows: • if the output signal must be according to the NTSC standard, the input signals must be generated with a specific set-up level • for R, G and B inputs a set-up level of 53 mV is required, therefore the specified amplitude must be 753 mV (peak-to-peak) instead of 700 mV (peak-to-peak) • for U, V and Y inputs a set-up level for Y of 76 mV is required, therefore the specified amplitude must be 1076 mV (peak-to-peak) (without sync) instead of 1 V (peak-to-peak). This option, combined with U, V and Y inputs, is not possible if VCC is < 4.75 V. |
Numéro de pièce similaire - TDA8501 |
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Description similaire - TDA8501 |
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