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MSK642 Dataheets PDF



Part Number MSK642
Manufacturers MSK
Logo MSK
Description HIGH VOLTAGE CRT VIDEO AMPLIFIER
Datasheet MSK642 DatasheetMSK642 Datasheet (PDF)

ISO 9001 CERTIFIED BY DSCC WIDE BANDWIDTH, HIGH VOLTAGE CRT VIDEO AMPLIFIER M.S.KENNEDY CORP. 4707 Dey Road Liverpool, N.Y. 13088 642 (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 speci.

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ISO 9001 CERTIFIED BY DSCC WIDE BANDWIDTH, HIGH VOLTAGE CRT VIDEO AMPLIFIER M.S.KENNEDY CORP. 4707 Dey Road Liverpool, N.Y. 13088 642 (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 www.DataSheet4U.com TYPICAL APPLICATIONS CRT Driver for Color and Monochrome Monitors High Voltage Transimpedance Amplifier Ultra High Speed Amplifier for Test Equipment 1 PIN-OUT INFORMATION 1 2 3 4 5 Inverting Input Ground Ground -Vee -Vee 6 7 8 9 -Vee Ground Ground Output Rev. E 10/05 ABSOLUTE MAXIMUM RATINGS -VEE θJC IOUT Supply Voltage Thermal Resistance (Junction to Case) Peak Output Current ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 7 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ -65V 27°C/W ○ ○ TST TLD TC ○ ○ ○ ○ ○ ○ ○ ○ ○ 250mA TJ Storage Temperature Range -65°C to +150°C Lead Temperature Range 300°C (10 Seconds) Case Operating Temperature MSK642 -40°C to +85°C MSK642B -55°C to +125°C Junction Temperature 175°C ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ELECTRICAL SPECIFICATIONS -Vee=-60V Unless Otherwise Specified Parameter STATIC Power Supply Current VIN=N/C 1 2 3 Input Bias Voltage VIN=N/C 1 2,3 Output Offset Voltage VIN=N/C 1 2,3 Input Capacitance 2 Group A Test Conditions 1 Subgroup Min. MSK 642B Typ. Max. Min. MSK 642 Units Typ. Max. -1.4 -1.35 -28 -26 -40 -40 -55 -35 -1.55 -30 -30 10 -60 -45 -65 -45 -1.7 -1.8 -32 -34 -65 -1.3 -27 -40 -40 -55 -35 -1.55 -30 10 -60 -50 -1.8 -33 -65 mA mA mA V V V V pF V VIN=0.7V Derated Performance - Power Supply Range DYNAMIC CHARACTERISTICS Output Voltage High Output Voltage Low Voltage Gain Rise Time Fall Time Overshoot (Adjustable) 2 -3dB Bandwidth 2 f=10KHz f=10KHz VIN=2VPP; f=10KHz VOUT=40VPP VOUT=40VPP VOUT=20VPP VOUT=20VPP f=1KHz f=10KHz; 5VPP≤VOUT≤50Vpp 4 4 4 4 4 4 -54 10.5 125 - -56 -4 12.5 2.5 2.5 25 175 0.5 -6 14.5 3.4 3.4 1.5 5 -54 10 120 - -56 -4 12.5 2.5 2.5 25 175 0.5 -6 15 3.5 3.5 1.5 5 V V V/V nS nS % MHz V % Low Frequency Tilt Voltage 2 Linearity Error NOTES: RIN=215Ω, CIN=100pF, CLOAD=8.5pF, RL=∞, unless otherwise specified (See Figure 1). Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only. Industrial grade devices shall be tested to subgroups 1 and 4 unless otherwise specified. Military grade devices ('B' suffix) shall be 100% tested to subgroups 1,2,3 and 4. Subgroup 5 and 6 testing available upon request. Subgroup 1,4 TA=TC=+25°C Subgroup 2,5 TA=TC=+125°C Subgroup 3,6 TA=TC=-55°C 7 Continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cycle. 1 2 3 4 5 6 2 Rev. E 10/05 APPLICATION NOTES TYPICAL TEST CIRCUIT The signal source in Figure 1 can be either a fast pulse generator or a network analyzer as long as the output impedance is 50 ohms. The DC level of the input should be -1.55V and all cables should be kept as short as possible. Since total load capacitance should be kept below 8.5pF, a FET probe should be used on the ouput. OUTPUT ISSUES The output of the MSK 642 is a pair of bipolar emitter followers configured in a complimentary push pull configuration. This configuration eliminates the need for a pull up load resistor and makes the amplifier less susceptible to load capacitance variations. Connecting a wire or cable from the output of the amplifier to the CRT grid can create a resonant circuit which can cause unwanted oscillations or overshoot at its resonant frequency. A damping resistor in series with the lead inductance will alleviate this condition. The optimum value of this resistor can be determined using the following formula: R = 2* √L/C This resistor also doubles as an arcing protector. In the breadboarding stage, the value of this resistor should be determined experimentally. Resistance in the range of 50 to 100 ohms is usually sufficient. If a quick, simple peaking network is desired, a 300 ohm cable terminated by a capacitor will act like an inductor in the frequency range involved. USING THE MSK 642 The output of the amplifier is biased at one half of th.


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