CVA2417.pdf

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Corel Ventura - 2417TL.CHP
CORPORATION
Improved
Triple 85MHz CRT Driver
CVA2417TL
FEATURES
·
Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85MHz
DESCRIPTION
The CVA2417TL is an improved version that features
excellent gray scale linearity with no crossover distortion and
less EMI. Designed especially to drive high resolution monitor
for resolution up to 1280 x 1024 (non-interlaced) with pixel
frequency up to 160MHz.
The part is housed in the industry standard 11-lead TO-220
molded power package. The heat sink is floating and may be
grounded for ease of manufacturing and RFI shielding.
Fall Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.8ns
·
RiseTime. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4ns
·
Swing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V P-P
·
Excellent Gray Scale Linearity
·
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80V
·
Pin to Pin Compatible with CVA2417TX
APPLICATIONS
·
CRT Driver for 1280 x 1024 and 1024 x 768 Color
Monitors
ORDERING INFORMATION
Part
Package
Temperature
CVA2417TL
T11A
-20 o C to +100 o C
CONNECTION DIAGRAM AND SIMPLIFIED SCHEMATIC
11
10
9
V+
V+
11
V
BIAS 3 (12V)
OUT 3
8
7
V
BIAS 2 (12V)
IN 3
V OUT
3,4,10
6
V
GND
IN 2
5
4
3
V BIAS
V
V
OUT 2
2,7,9
OUT 1
2
1
BIAS 1 (12V)
V
V IN
1,6,8
IN 1
PIN 1 DESIGNATOR
T11A
1H-32
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
·
383829527.002.png
CVA2417TL
CORPORATION
ABSOLUTE MAXIMUM RATINGS
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90V
Storage Temperature . . . . . . . . . . . . . . . . . . -25 o C to +100 o C
Operating Temperature . . . . . . . . . . . . . . . . -20 o C to +100 o C
Lead Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +300 o C
DC ELECTRICAL CHARACTERISTICS V S = 80V, C L = 12pF, V bias = 12V, V in = 3.4V, T case = +25 o C. See Figure 1.
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX
UNITS
I CC
Supply Current @ 1MHz
32
38
mA
I CC
Supply Current @ 50MHz
55
mA
V outDC
Output DC Level
40
45
50
V
A V
Voltage Gain
11
13
15
V
Gain Matching
0.2
dB
AC ELECTRICAL CHARACTERISTICS V S = 80V, C L = 12pF, V bias = 12V, T case = +25 o C. See Figure 1.
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX
UNITS
t r
Rise Time
4.4
6.0
ns
t f
Fall Time
3.8
5.0
ns
BW
Bandwidth
85
MHz
Le
Linearity
8
%
OS
Overshoot
10
%
FIGURE 1. TEST CIRCUIT
12V
C4
C3
V CC
C6
C2
R1
2,7,9
11
V
D1
L1
CC
V BIAS
1/3
Q1
3,4,10
INPUT
CVA2417TL
OUTPUT
V OUT
R5
R4
C1
1,6,8
R2
C L
V IN
D2
R6
R3
5
GND
C1 = 0.01 m F
C2 = 0.01 m F
C3 = 0.1 m F
C4 = 0.47 m F
C = 12pF (Including Parasitics)
L
R1 = 8.2k W
R2 = 2.7k W
R3 = 10.0K W
R4 = 34 W
R5 = 1.5k W
R6 = 150 W
D1 = FDH400
D2 = FDH400
L1 = 560nH
Q1 = 2N5770
C6 = 1.0 m F
1L-06
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
383829527.003.png
CVA2417TL
CORPORATION
APPLICATION INFORMATION
The CVA2417TL is a high voltage triple CRT driver suitable for
VGA, Super VGA, IBM ® 8514, 1280 x 1024 and 1024 x 768
non-interlaced display applications. The CVA2417TL features
80V operation and low power dissipation. The part is housed
in the industry standard 11 lead TO-220 molded power
package. The heat sink is floating and may be grounded for
ease of manufacturing and RFI shielding.
FIGURE 2. CVA2417TL DC Characteristics
6
110
100
5
90
80
4
Thermal Considerations
The transfer characteristics of the amplifier are shown in
Figure 2. Since this is a class A input stage, power supply
current increases as the input signal increases and
consequently power dissipation also increases. Average
dissipation per stage is 2.8W, increasing to 4.8W at minimum
output voltage.
The CVA2417TL cannot be used without heat sinking. Figure
2 shows the power dissipated in each channel over the
operating voltage range of the device. Under white screen
conditions, i.e.: 20V output, dissipation increases to 16W
total. The CVA2417TL case temperature must be maintained
below +90 o C. If the maximum expected ambient temperature
is +50 o C, then a heat sink is needed with thermal resistance
equal to or less than:
R th = ( 90 - 50 o C )
16W
70
VOLTAGE POWER
60
3
50
40
2
30
20
10
1
0
1
2
3
4
5
6
7
INPUT VOLTAGE
1G-26
to ground or V + .
The output of CVA2417TL is not short circuit proof. Any
resistance to V + or Ground should be > 600
W
= 2.5 o C/W
W
.
FIGURE 3.
FALL TIME
RISE TIME
BANDWIDTH
80V
80V
0dB
10V
10V
1
10
100
5ns/DIV
5ns/DIV
MHz
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
The CVA2417TL maximum load is 600
383829527.004.png
CVA2417TL
CORPORATION
TYPICAL APPLICATION
A typical application of the CVA2417TL is shown in Figure 4.
FIGURE 4. TYPICAL APPLICATION
12V
C3
11
C4
V CC
C6
C2
R2
V BIAS
2,7,9
D1
L1
1/3
CVA2419TL
V OUT
R4
OUTPUT
FROM
3,4,10
R1
V IN
C1
R5
C L
1,6,8
PREAMP
D2
5
GND
DC
RESTORE
1L-07
C1
m F
C2
m F
C3
m F
C4
m F
CL*
pF
C6
m F
R1
W
R2
W
R4
W
R5
K W
D1
D2
L1
nH
Q1
CVA2417
1.0
0.01
0.1
0.43
12
1.0
22
47
34
1.5
FDH400 FDH400 560 2N5770
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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