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參數(shù)資料
| 型號： | CVA2415 |
| 廠商： | CALOGIC LLC |
| 英文描述： | Low Cost Triple 65MHz CRT Driver |
| 中文描述： | 低成本三65MHz CRT顯示器驅(qū)動 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大小： | 61K |
| 代理商： | CVA2415 |
APPLICATION INFORMATION
The CVA2415 is a high voltage triple CRT driver suitable for
VGA, Super VGA, IBM 8514 1024 x 768 non-interlaced
display applications. The CVA2415 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.
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 1.8W, increasing to 3.2W at minimum
output voltage.
The CVA2415 cannot be used without heat sinking.
Figure 2
shows the power dissipated in each channel over the
operating voltage range of the device, Typical "average"
power dissipation with the device output voltage at one half
the supply voltage is 1.8W per channel for a total dissipation
of 5.4W package dissipation. Under white screen conditions,
i.e.: 15V output, dissipation increases to 3W per channel or
9W total.
The CVA2415 case temperature must be
maintained below +100
oC. If the maximum expected ambient
temperature is +50
oC, then a heat sink is needed with thermal
resistance equal to or less than:
Rth =
(100 50oC)
9W
= 5.5oC/W
The Thermalloy #6400 is one example of a heatsink that
meets this requirement.
The output of CVA2415 is not short circuit proof.
Any
resistance to V
+ or Ground should be > 600.
CVA2415
CORPORATION
FALL TIME
10ns/DIV
VOLTS
10V/D
IV
20V
80V
BANDWIDTH
100
MHz
110
0dB
GAI
N
10dB/D
IV
RISE TIME
VOLTS
10V/DIV
10ns/DIV
20V
80V
FIGURE 3.
FIGURE 2. CVA2415 DC Characteristics
CALOGIC
CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
INPUT VOLTAGE
OUT
P
U
T
VO
L
T
A
G
E
(VO
LTS
)
0
60
90
35
7
PO
WE
R
D
ISSIPA
T
IO
N
(WATTS)
14
6
2
50
80
40
70
30
20
10
VOLTAGE
POWER
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