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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TVP3020 датащи(PDF) 49 Page - Texas Instruments |
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TVP3020 датащи(HTML) 49 Page - Texas Instruments |
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49 / 98 page  2–35 The relationship between RSET and the full scale output current IOG is: RSET ( Ω) = K1 × Vref (V) / IOG (mA) The full-scale output current on IOR and IOB for a given RSET is: IOR, IOB (mA) = K2 × Vref (V) / RSET (Ω) where K1 and K2 are defined as: PEDESTAL IOG IOR, IOB PEDESTAL 8-BIT OUTPUT 6-BIT OUTPUT 8-BIT OUTPUT 6-BIT OUTPUT 7.5 IRE K1 = 11,294 K1 = 11,206 K2 = 8,067 K2 = 7,979 0 IRE K1 = 10,684 K1 =10,600 K2 = 7,462 K2 = 7,374 White Black Blank SYNC 92.5 IRE [mA] 26.67 9.05 7.62 0.00 [V] 1.000 0.340 0.286 0.000 [mA] 19.05 1.44 0.00 [V] 0.714 0.054 0.000 Green Red/Blue 7.5 IRE 40 IRE Figure 2–14. Composite Video Output (With 7.5 IRE, 8-Bit Output) White Black/ Blank SYNC 100 IRE 40 IRE [mA] 25.24 7.62 0.00 [V] 0.950 0.286 0.000 [mA] 17.62 0.00 [V] 0.660 0.000 Green Red/Blue Figure 2–15. Composite Video Output (With 0 IRE, 8-Bit Output) NOTE: 75- Ω doubly terminated load, Vref = 1.235 V, RSET = 523 Ω. RS343A-levels and tolerances are assumed on all levels. |
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