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Calogic LLC |
CORPORATION
Low Cost
Triple CRT Driver
Preliminary Data Sheet
CVA2403T
FEATURES
• Rise/Fall Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0ns
• Swing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65VP-P
• Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90V
• High Input Impedance
APPLICATIONS
• CRT driver for up to 82kHz monitors
• Excellent Gray Scale Linearity
• Emitter Peaking Option
• Adjustable Gain
DESCRIPTION
The CVA2403T is a high input impedance wideband triple
amplifier. The device is specifically designed to drive a CRT
featuring a high speed buffer for easy matching to a pre-amplifier,
no crossover distortion for excellent gray scale linearity, external
emitter peaking to maximize the high frequency gain at the cross
hatch pattern and an adjustable gain for ease of use. This
device can drive monitors with resolutions of 1280 X 1024
(interlaced) with pixel frequencies of 220MHz.
The part is housed in the industry standard 11-lead TO-220
molded power package. The heat sink is grounded.
ORDERING INFORMATION
Part Package
CVA2403T
T11A
Temperature
-20oC to +100oC
CONNECTION DIAGRAM AND SIMPLIFIED SCHEMATIC
11
VOUT 1
10
VOUT 2
9
VCC
8
VOUT 3
7
VBIAS
6
Gain/Peaking
Control
3
5
VIN 3
4
Gain/Peaking
Control
2
3 VIN 2
2
Gain/Peaking
Control
1
1
VIN 1
TOP VIEW
T11A PACKAGE
GND = TAB
1N-22
R1 = 1000Ω
VCC
9
VBIAS
7
VIN
1,3,5
12Ω
VOUT
11,10,8
12Ω
2,4,6
Gain/Peaking
Control
GND
TAB
1P-38
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CVA2403T
CORPORATION
ABSOLUTE MAXIMUM RATINGS
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90V
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16W
Storage Temperature . . . . . . . . . . . . . . . . . . . -25oC to +100oC
Operating Temperature . . . . . . . . . . . . . . . . . -20oC to +100oC
Lead Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300oC
DC ELECTRICAL CHARACTERISTICS Vs = 80V, CL = 8pF, DCINPUT BIAS = 12V, VIN = 3.4V, VOUT = 50Vp-p. TCASE = +25oC.
See Figure 1.
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX
UNITS
Icc
VOUT DC
Av
Supply Current
Output DC Level
Voltage Gain
Gain Matching
30 34 40 mA
40 45 50
V
13 15 17
V
0.2 dB
AC ELECTRICAL CHARACTERISTICS Vs = 80V, CL = 8pF, DCINPUT BIAS = 12V, VIN = 3.4V, VOUT = 50Vp-p. TCASE = +25oC.
See Figure 1.
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX
UNITS
Tr Rise Time
4 4.5 ns
Tf Fall Time
4 4.5 ns
Le Linearity
6%
OS Overshoot
5%
FIGURE 1. TEST CIRCUIT
VBIAS
C1
VCC 9
C3
C2
VIDEO
INPUT
7
VIN
1,3,5
CVA2403T
VP G
2,4,6
D1
VOUT
8,10,11
D2
R2 GND
TAB
R1
C7
C4
TEKTRONIX
C6
FET PROBE
MODEL 6201
(CAP. 1.5pF)
C1 = 0.01µF
C2 = 100µF
C3 = 0.1µF
C7 = 120pF
C4 = 100µF
C6 = 8pF
R1 = 62Ω
R2 = 20Ω
D1, D2 = FHD400
1P-39
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
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