Low Cost
Triple CRT Driver
CVA2400T
FEATURES
Rise/Fall Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0ns
Swing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65V
P-P
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90V
APPLICATIONS
CRT driver for up to 69kHz monitors with resolution up
to 1280 x 1024.
Excellent Gray Scale Linearity
Emitter Peaking Option
Adjustable Gain
DESCRIPTION
The CVA2400T contains three wideband amplifiers, designed
specifically to drive a CRT. It features no crossover distortion for
excellent gray scale linearity, external emitter peaking to
maximize the high frequency gain at cross hatch pattern and
adjustable gain for ease of use. This device can drive monitors
with resolutions of 1280 x 1024 (non-interlaced) with pixel
frequency of 176MHz.
The part is housed in the industry standard 11-lead TO-220
molded power package. The heat sink is grounded.
ORDERING INFORMATION
Part
Package
Temperature
CVA2400T
T11A
-20
o
C to +100
o
C
CORPORATION
CONNECTION DIAGRAM
OUT
OUT
11
10
9
8
7
6
5
4
3
2
1
IN
TOP VIEW
T11A PACKAGE
V
V
V
Gain/Peaking
Control
V
BIAS
V
CC
1J-13
OUT
V
IN
V
Gain/Peaking
Control
Gain/Peaking
Control
IN
V
GND = TAB
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
1N-19
GND
TAB
7
9
V
CC
11,10,8
12
12
V
BIAS
V
O
1,3,5
V
IN
2,4,6
Gain/Peaking
Control
= 1200
R
1
Preliminary Data Sheet
ABSOLUTE MAXIMUM RATINGS
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90V
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12W
Storage Temperature . . . . . . . . . . . . . . . . . . . -25
o
C to +100
o
C
Operating Temperature . . . . . . . . . . . . . . . . . -20
o
C to +100
o
C
Lead Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300
o
C
CVA2400T
CORPORATION
FIGURE 1. TEST CIRCUIT
GND
TAB
1N-20
V
IN
V
BIAS
C1 = 0.01
F
C2 = 100
F
C3 = 0.1
F
C7 = 120pF
D1, D2 = FHD400
R1 = 62
R2 = 20
C4 = 100
F
C6 = 8pF
R2
R1
C6
C4
C3
C2
C1
D2
D1
VIDEO
INPUT
V 9
CC
1,3,5
7
8,10,11
V
OUT
C7
V
P G
2,4,6
TEKTRONIX
FET PROBE
MODEL 6201
(CAP. 1.5pF)
CVA2400T
DC ELECTRICAL CHARACTERISTICS V
s
= 80V, C
L
= 8pF, DC
INPUT BIAS
= 12V, V
IN
= 1.8V, V
OUT
= 50V
p-p
. T
CASE
= +25
o
C.
See Figure 1.
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX
UNITS
I
cc
Supply Current
28
mA
V
OUT DC
Output DC Level
52
V
A
v
Voltage Gain
15
V/V
Gain Matching
0.2
dB
AC ELECTRICAL CHARACTERISTICS V
s
= 80V, C
L
= 8pF, DC
INPUT BIAS
= 12V, V
IN
= 3.4V, V
OUT
= 50V
p-p
. T
CASE
= +25
o
C.
See Figure 1.
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX
UNITS
T
r
Rise Time
5
ns
T
f
Fall Time
5
ns
L
e
Linearity
6
%
OS
Overshoot
5
%
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CVA2400T
CORPORATION
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
FIGURE 2. APPLICATION CIRCUIT
1N-21
GND
TAB
V
BIAS
C1 = 0.01
F
C2 = 100
F
C3 = 0.1
F
C4 = 100
F
C5 = 2.2
F
C7 = 40 - 120pf
D1, D2 = FHD400
L = 330 - 390nH
R1 = 62
R2 = 20
R3 = 47
R4 = 47(1/2W)
R7 = 33
R8 = 39
R10 = 680
R3
R4
C4
C3
C2
C1
D2
D1
V 9
CC
7
8,10,11
V
OUT
C5
SPARK
GAP
CVA2400T
R5
L
V
IN
R2
R1
VIDEO
INPUT
1,3,5
C7
V
PG
2,4,6
DC BIAS
CVA2400T
CORPORATION
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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