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LM2453

LM2453
型号:LM2453
品牌:NS NS
批号:13+RoHs
封装:ZIP-15
原价:28
数量:50000
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备注:100% 全新原装(Brand new)
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详细描述

LM2453

Monolithic Triple 6 nS CRT Driver With Integrated Clamp and G1 Blanking
 
 
The AC2DC driver is aintegrated high voltage triple CRT
driver circuit designed for use icolor monitor applications.
The input signal interface to the IC is a multiplexed signal
containing both clamp and video signal information, relative
to a 1.7 VDC reference.
The IC contains three high gain, high input impedance, wide
band amplifiers which directly drive the RGB cathodes of a
CRT. Each channel has its gaiinternally set to −52 and can
drive CRT capacitive loads as well as resistive loads present
iother applications, limited only by the package’s power
dissipation.
Integrated with the driver is triple clamp circuit for DC recovery of each of the AC coupled outputs. The DC clamp circuit
amplifies the clamp signal that is multiplexed othe video
signal input. The DC clamp amplifiers are high gain, high input impedance amplifiers, setting a low impedance DC level
at the clamp output which cabe used to restore the DC
level of the cathode drive. Each channel has a gaithat is internally set to +73.
Also integrated withithe package is a 40 VP-P
vertical
blanking driver that is designed to provide vertical retrace
blanking oG1 of the CRT. This is a current limited, low impedance output capable of driving normal G1 decoupling capacitances via aexternal resistor. The output of the G1
driver caalso be used to drive a voltage boost capacitor (22
µF). Wheconnected betweethe G1 drive output and the
120V supply input pin, a 120V boost supply is achieved
which cabe used to drive the internal DC clamp circuit,
thereby eliminating the requirement for a 120V clamp supply.
The IC is packaged iaindustry standard 15-lead TO-220
molded plastic power package.
 
 
 
Features
Low power dissipation
Well matched with LM1253A video pre-amp
Three wideband video amplifiers
Three integrated active clamp circuits
Convenient TO-220 staggered lead package
Built ihorizontal blanking
Integrated 120V supply and G1 vertical blank drive
circuit
Applications
1280 x 1024 Resolutiodisplays up to 85 Hz refresh
Pixel clock frequencies up to 135 MHz
Monitors requiring horizontal video blanking
 
 
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