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ADV473KP66 Scheda tecnica(PDF) 10 Page - Analog Devices |
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ADV473KP66 Scheda tecnica(HTML) 10 Page - Analog Devices |
10 / 12 page ADV473 –10– REV. A 7.5 IRE SYNC LEVEL BLANK LEVEL BLACK LEVEL WHITE LEVEL 26.67 1.000 9.05 0.340 7.62 0.286 0.000 0.00 MA V 92.5 IRE 40 IRE NOTE: 75 Ω DOUBLY TERMINATED LOAD, SETUP = 7.5 IRE, V REF = 1.235 V, RSET = 140Ω RS-343A LEVELS AND TOLERANCES ASSUMED ON ALL LEVELS. Figure 5. Composite Video Output Waveform (Setup = 7.5 IRE) Table VI. Video Output Truth Table (Setup = 7.5 IRE) IOUT DAC Description (mA) SYNC BLANK Input Data WHITE 26.67 1 1 FFH DATA Data+9.05 1 1 Data DATA-SYNC Data+1.44 0 1 Data BLACK 9.05 1 1 00H BLACK-SYNC 1.44 0 1 00H BLANK 7.62 1 0 XXH SYNC 0 0 0 XXH NOTE Typical with full-scale IOR, IOG, IOB = 26.67 mA, SETUP = 7.5 IRE, VREF = 1.235 V, RSET = 140 Ω. External voltage reference adjusted for 26.67 mA full-scale output. 25.24 0.950 7.62 0.286 0.000 0.00 MA V SYNC LEVEL BLACK/BLANK LEVEL WHITE LEVEL 100 IRE 43 IRE NOTE: 75 Ω DOUBLY TERMINATED LOAD, SETUP = 0 IRE, V REF = 1.235 V, RSET = 140Ω RS-343A LEVELS AND TOLERANCES ASSUMED ON ALL LEVELS. Figure 6. Composite Video Output Waveform (Setup = 0 IRE) Table VII. Video Output Truth Table (SETUP = 0 IRE) IOUT DAC Description (mA) SYNC BLANK Input Data WHITE 25.24 1 1 FFH DATA Data+7.62 1 1 Data DATA-SYNC Data 0 1 Data BLACK 7.62 1 1 00H BLACK-SYNC 0 0 1 00H BLANK 7.62 1 0 XXH SYNC 0 0 0 XXH NOTE Typical with full-scale IOR, IOG, IOB = 25.24 mA, SETUP = 0 IRE, VREF = 1.235 V, RSET = 140 Ω. External voltage reference adjusted for 26.67 mA full-scale output. |
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