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PDF MSK642 Data sheet ( Hoja de datos )
| Número de pieza | MSK642 | |
| Descripción | HIGH VOLTAGE CRT VIDEO AMPLIFIER | |
| Fabricantes | MSK | |
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Hay una vista previa y un enlace de descarga de MSK642 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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ISO 9001 CERTIFIED BY DSCC
WIDE BANDWIDTH, HIGH VOLTAGE
642CRT VIDEO AMPLIFIER
M.S.KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
(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
50Vpp Output Swing
Replacement for CR2424R
MIL-PRF-38534 CERTIFIED
DESCRIPTION:
The MSK 642(B) 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 642(B) is a transimpedance
amplifier capable of achieving a ±25V output voltage swing with an input current of ±9.3mA. 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 642
to drive 10nS pixels with ease and make it ideally suited for monitors with 1280 x 1024 or higher display resolutions.
The MSK 642 is mounted in a space efficient 9 pin single in-line bathtub package with heat sink fins.
EQUIVALENT SCHEMATIC
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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 10/05
1 page  
COMPLETE VIDEO SYSTEM
Figure 3 above illustrates how an MSK 620 and MSK 642 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 642. The output of the MSK 642 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 642. 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 ringing.
5 Rev. E 10/05
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MSK642.PDF ] | |
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