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PDF MSK643 Data sheet ( Hoja de datos )
| Número de pieza | MSK643 | |
| Descripción | VERY HIGH VOLTAGE CRT VIDEO AMPLIFIER | |
| Fabricantes | MSK | |
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Hay una vista previa y un enlace de descarga de MSK643 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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MIL-PRF-38534 CERTIFIED
M.S.KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
WIDE BANDWIDTH,
VERY HIGH VOLTAGE
CRT VIDEO AMPLIFIER
643
(315) 701-6751
FEATURES:
Negative Output Voltage for Grid Drive
2.5nS Transition Times
Drives 8.5pF Capacitive Load With Ease
DC Coupled for Output Level Adjust
175MHz Bandwidth
70Vpp Output Swing
Replacement for CR3424R
Contact MSK for MIL-PRF-38534 for Qualification Status
DESCRIPTION:
The MSK 643 is a wide bandwidth, high voltage color or monochrome CRT video amplifier designed specifically to
drive the grid of today's most demanding high resolution CRT monitors. The MSK 643 is a transimpedance amplifier
capable of achieving a ±35V output voltage swing with an input current of ±10mA. The output of the amplifier is
DC biased at half the power supply voltage. Transition times in the range of 2.5nS enable the MSK 643 to drive 10nS
pixels with ease and make it ideally suited for monitors with 1280 x 1024 or higher display resolutions. The MSK 643
is mounted in a space efficient 9 pin single in-line bathtub package with two mounting tabs for direct mounting to a
heat sink or chassis.
EQUIVALENT SCHEMATIC
www.DataSheet4U.com
TYPICAL APPLICATIONS
CRT Driver for Color and
Monochrome Monitors
High Voltage Transimpedance Amplifier
Ultra High Speed Amplifier for
Test Equipment
PIN-OUT INFORMATION
1 Inverting Input
2 Ground
3 Ground
4 -Vee
5 -Vee
1
6 -Vee
7 Ground
8 Ground
9 Output
Rev. E 5/06
1 page  
COMPLETE VIDEO SYSTEM
Figure 3 above illustrates how an MSK 620 and MSK 643 can be used to build a compete video system for high voltage grid
drive. RA and RB act as a level shift stage to match the +3.9Vdc level at the output of the MSK 620 with the -1.55Vdc level at
the input of the MSK 643. The output of the MSK 643 is sampled and fed back to the MSK 620. This scheme provides black level
control superior to sampling the signal at pin 14 of the MSK 620. The general rule of thumb for transition times for a video driver
is that rising and falling edges should be no more than one third the pixel time of the monitor. To improve rise and fall time in the
system, the peaking capacitor Cp was added across the input resistor of the MSK 643. At high frequencies Cp increases the gain
of the amplifier there by causing peaking. Cp should be a variable capacitor so that the response of the amplifier can be fine tuned
for minimum transition time with minimum overshoot.
5 Rev. E 5/06
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MSK643.PDF ] | |
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