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| CRT Driver CORPORATION Preliminary Data Sheet CVA1556N FEATURES DESCRIPTION The CVA1556N CRT driver amplifier is a very low cost solution designed for monitors up to 69KHz. This product is designed to replace the discrete solution for the 14", 15" and 17" monitors. ORDERING INFORMATION Part CVA1556N Package 8-PDIP Temperature 0oC to +110oC * * * * * * Little or No Heat Sink Required Ease of Use Emitter Peaking Rise Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <8.0ns Fall Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <8ns APPLICATIONS 14", 15" and 17" Monitors with 69KHz Scanning Frequency CONNECTION AND BLOCK DIAGRAMS VCC R POWER Q1 VBIAS N/A VIN GAIN/PEAKING CONTROL 1 2 3 4 8 7 6 5 RPOWER VCC VOUT GND 1S-45 VOUT Q2 VB Q3 VIN Q4 4 GAIN/PEAK GND 1T-26 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CVA1556N CORPORATION ABSOLUTE MAXIMUM RATINGS Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100V Storage Temperature . . . . . . . . . . . . . . . . . . . -25oC to +125oC Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 175oC Operating Temperature (Case) . . . . . . . . . . . . . 0oC to +110oC Lead Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300oC DC ELECTRICAL CHARACTERISTICS Vs = 80V, CL = 12pF, VBIAS = 12V, VIN = 2.7V, RL = 1500, TCASE = +25oC. SYMBOL Icc VOUT DC Av Supply Current Output DC Level Voltage Gain 44 CHARACTERISTICS MIN TYP 20 50 13 MAX 26 56 15 UNITS mA V V AC ELECTRICAL CHARACTERISTICS Vs = 80V, CL = 12pF, VBIAS = 12V, VIN = 2.7V, RL = 1500, TCASE = +25oC. SYMBOL Tr Tf Le OS Rise Time Fall Time Linearity Overshoot CHARACTERISTICS MIN TYP 7.5 7.5 5 3 MAX 9 9 UNITS ns ns % % FIGURE 1. TEST AND APPLICATION CIRCUIT 80V C1 8 7 R1 L1 VIN R2 3 1 6 CVA1556N 4 R6 C3 R4 R5 R7 VOUT 5 C2 R3 +12V C1 = 10mF C2 = .01mF C3 = 47pF L1 = .56mH R1 = 1.5K (5W) R2 = 339 R3 = 509 R4 = 1009 R5 = 339 R6 = 8209 R7 = 479 1U-14 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CVA1556N CORPORATION APPLICATION INFORMATION The CVA1556N is a high voltage triple CRT driver suitable for VGA, Super VGA, IBM(R) 8514, 1024 x 768 non-interlaced display applications. The CVA1556N features 80V operation and low power dissipation. The part is housed in the industry standard 8-pin PDIP. Thermal Considerations The transfer characteristics of the CVA1556N application (Figure 2.) are shown in Figure 3. Since this is a class A input stage, power supply current increases as the input signal increases and consequently power dissipation also increases. The CVA1556N can be used without a heat sink. Under white screen condition, i.e. 25V output, dissipation is 0.6W/channel. Under gray level conditions CL =12pf, VOUT = 45P-P, the dissipation is 1.1W/channel. The CVA1556N maximum load is 600 to ground or V . The output of CVA1556N is not short circuit proof. Any resistance to V+ or Ground should be more than 600. TYPICAL CHARACTERISTICS RISE TIME 7.25V FIGURE 2. CVA1556N DC CHARACTERISTICS 80 70 60 50 40 0.8 30 20 10 0 0 0.2 0.5 0.7 1.0 1.2 1.5 1.7 2.0 2.2 2.5 2.7 3.0 3.2 3.5 3.7 4.0 4.2 4.5 4.7 5.0 5.2 5.5 5.7 6.0 2 1.8 1.6 1.4 1.2 1.0 V OUT (VOLTS) 0.6 0.4 0.2 0 -0.2 V IN (VOLTS) V OUT Q3-POWER POWER/OUTPUT STAGE + 1T-25 FALL TIME 7.25V -2.75V 20ns/DIV 1S-49 -2.75V 20ns/DIV 1S-50 CROSS HATCH WHITE BACKGROUND 8.25V 8.25V 10V/DIV 10V/DIV CROSS HATCH BLACK BACKGROUND 10V/DIV -2.75V 20ns/DIV 1T-01 -1.75V 20ns/DIV 1T-02 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 10V/DIV CVA1556N CORPORATION TYPICAL APPLICATION 1 R104 15K 2 1 2 3 2 1 C107 0.1U V 1 20 VR101 10K CLAMP+ 2 L101 4U7 1 N + P C105 10U 16V 2 19 R 1 P101 2 R101 75 W C101 47u V N P + 3 18 2 R107 390 1 2 R110 18K 1 GND 2 P101 1 2 1 C102 47u V N P + R102 75 W C106 0.1U V 2 1 C110 0.1U V 1 G 3 P101 2 5 16 L102 1 4U7 2 N + P C126 10U 16V GND 4 P101 1 6 CVA1233 15 2 R108 390 1 2 R111 18K 1 7 2 1 C103 47u V N P + R103 75 W C107 0.1U V 14 2 1 32 C111 0.1U V 1 VR104 10K G-GAIN B 5 P101 2 8 13 2 R109 390 1 2 R112 18K 1 GND 6 P101 1 9 2 7 P101 1 8 P101 9 P101 VR102 10K CONTRAST 1 2 32 1 C109 0.1U V 1 R106 100 2 10 1 2 C108 0.1U V 12 2 1 32 C112 0.1U V 1 VR105 10K B-GAIN CLAMP R105 15K 11 1 R156 100 W 1U-15A GND 2 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CONTINUED ON NEXT PAGE 4 17 32 VR103 10K R-GAIN CVA1556N CORPORATION TYPICAL APPLICATION (continued) C160 10m R113 ???? C125 ??? R116 22 C115 ??? CVA1556N 1 8 R128 ??? L111 R119 33 2 3 4 7 6 5 L103 R112 D1 D2 C130 ??? 100V R122 33 C118 27 R125 100 R114 100 C126 ??? R117 22 C116 ??? CVA1556N 1 8 R129 1.5K L111 R120 33 2 3 4 7 6 5 L109 R133 D3 D4 C140 10.4 100V R123 33 C119 27 R126 100 R115 100 C127 ??? R118 22 C117 ??? CVA1556N 1 8 R130 1.5K L108 R121 33 2 3 4 7 6 5 L110 R134 D5 D6 C150 10mF 100V R124 33 C120 27 R127 100 1U-15BB CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CONTINUED ON NEXT PAGE CVA1556N CORPORATION TYPICAL APPLICATION (continued) VR106 100K VR107 100K VR108 100K 16 15 14 13 12 11 10 9 CVA4502 1 2 R135 ??? C121 10mF D7 3 4 5 R136 ??? D8 6 R137 ??? D9 7 8 L104 .68 R148 47 1/2W + - R147 820 C121 1mF CRT101 L105 .68 R150 47 1/2W CRT SP102 SP101 SP103 + - R149 820 C122 1mF C130 ???? G1 G2 G4 R153 1.5K D104 C131 330P C132 .001mF R154 15K 1/2W L106 .68 G2 + - R151 820 R150 47 1/2W C123 1mF G1 H +12V V1 JP101 C114 10U +80V 1U-15C CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CVA1556N CORPORATION CUIRCUT BOARD 1T-04A CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CVA1556N CORPORATION CUIRCUT BOARD 1T-04B Information furnished by Calogic is believed to be accurate and reliable. However, no responsibility is assumed for its use: nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of Calogic. CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 |
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