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CVA2415 Datasheet(PDF) 4 Page - Calogic, LLC |
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CVA2415 Datasheet(HTML) 4 Page - Calogic, LLC |
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FIGURE 4. Typical Application CVA1203 - CVA2415 Application TYPICAL APPLICATION A typical application of the CVA2415 is shown in Figure 4. Used in conjunction with a CVA1203, a complete video channel from monitor input to CRT cathode is shown. In this application, feedback is local to theCVA1203. An alternative scheme would be feedback from the output of the CVA2415 to the positive clamp inputs of the CVA1203. This would provide slightly better black level control of the system. CVA2415 CORPORATION 1 2 3 4 5 6 7 8 9 10 13 14 11 12 28 27 26 25 24 23 22 21 20 19 16 15 18 17 CVA1203 0.1 µF 10K Ω 10K Ω 10K Ω 0.1 µF 0.1 µF 0.1 µF 0.1 µF 0.1 µF 0.1 µF 10K Ω 0.1 µF MAX MIN 10K Ω BLACK LEVEL GATE IN 10 µF + 10 µF 75 Ω 30 Ω* VIDEO IN R + 10 µF 75 Ω 30 Ω* VIDEO IN G + 10 µF 75 Ω 30 Ω* VIDEO IN B + CONTRAST CONTROL 100 µF + 100 Ω 51 Ω RED DRIVE 100 Ω 51 Ω GREEN DRIVE 500 Ω 390 Ω 500 Ω TO RED CASCODE DRIVER TO BLUE CASCODE DRIVER 0.1 µF BLACK LEVEL (BRIGHTNESS) CONTROL 10K Ω 10K Ω 91 Ω CUTOFF ADJ. V CC +12V V bias V in Vout R5 C6 C2 C L R6 D2 D1 L1 C4 12V C3 Q1 V CC V CC R4 OUTPUT 5 GND 2,7,9 1,6,8 3,4,10 11 V bias V in R6 C4 12V C3 Q1 2,7,9 1,6,8 V bias V in R6 C4 12V C3 Q1 2,7,9 1,6,8 1/3 CVA2415 Vout R5 C6 C2 C L D2 D1 L1 V CC V CC R4 OUTPUT 5 GND 3,4,10 11 1/3 CVA2415 Vout R5 C6 C2 C L D2 D1 L1 V CC V CC R4 OUTPUT 5 GND 3,4,10 11 1/3 CVA2415 1B-50 CUTOFF ADJ. CUTOFF ADJ. TO GREEN CASCODE DRIVER DC RESTORE C1 DC RESTORE DC RESTORE C1 C1 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076 C1 µF C2 µF C3 µF C4 µF CL* pF C6 µF R4 Ω R5 K Ω R6 Ω D1 D2 L1 nH Q1 CVA2415 1.0 0.01 0.1 0.47 12 1.0 34 1.5 150 FDH400 FDH400 560 2N5770 |
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