CVA1556N Ver la hoja de datos (PDF) - Calogic, LLC
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CVA1556N Datasheet PDF : 8 Pages
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CORPORATION
CVA1556N
APPLICATION INFORMATION
The CVA1556N is a high voltage triple CRT driver suitable for
VGA, Super VGA, IBM® 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 600Ω to ground or V+.
The output of CVA1556N is not short circuit proof. Any resistance
to V+ or Ground should be more than 600Ω.
TYPICAL CHARACTERISTICS
7.25V
RISE TIME
FIGURE 2. CVA1556N DC CHARACTERISTICS
80
2
1.8
70
1.6
60
1.4
50
1.2
1.0
40
0.8
30
0.6
0.4
20
0.2
10
0
0
-0.2
VOUT
VIN (VOLTS)
Q3-POWER
POWER/OUTPUT STAGE
1T-25
7.25V
FALL TIME
-2.75V
8.25V
20ns/DIV
1S-49
CROSS HATCH
WHITE BACKGROUND
-2.75V
8.25V
20ns/DIV
1S-50
CROSS HATCH
BLACK BACKGROUND
-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
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