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Solutions Search - Video Drivers

Paralleling Amplifiers and Layout Essentials for Driving Capacitive Loads Fast - LT1397, LT1206, LT1207

Glen Brisebois - Applications Engineer - Signal Conditioning Dec 15th 2008
Certain video and other technologies require driving planar conductive surfaces fast. Unfortunately, the surfaces can have high capacitance, which means that driving them fast takes high currents. This complicates the amplifier design but the situation extends beyond just the amplifier. Between the amplifier and the capacitive ...

Video 

 

Super-Simple Coax to Twisted-Pair Adapter

Oct 30th 2007
Launching a baseband camera signal into twisted pair is a relatively simple matter of building a differential driver such as shown in this circuit. In this realization one LT6652 is used to create a gain of +1 and another is used to make a gain of –1. Each output is series terminated in half the line impedance to provide a ...

Circuit 

 

400MHz, 5V Single Supply Video Driver (AC Coupled)

Sep 22nd 2006
The LT6557 400MHz triple video driver is specifically designed to operate in 5V single supply AC-coupled applications as shown. The input biasing circuitry is contained on-chip for minimal external component count. A single resistor programs the biasing level of all three channels. ...

Circuit 

 

HD Video Cable Driver Using Economical LT6559

Sep 22nd 2006
Single supply 5V HD Video Cable Driver with two resistors setting common voltage on capacitive coupled input. Two 270pF takes care of 10MHz filtering. This circuit depicts one of three channels. ...

Circuit 

 

Low Part Count UXGA-Resolution Cable Driver on 5V Supply

Sep 22nd 2006
LT6557 UXGA-Resolution Cable Driver circuit operating from a single 5V Supply. This circuit has a 400MHz large signal bandwidth. Single input biasing system resistor programs eliminates then usual input divider resistors. High resolution HD quality circuit, one of three shown. ...

Circuit 

 

Single Supply Video Line Driver (AC Coupled)

Aug 13th 2004
When AC-coupling video, the waveform dynamics change with respect to the bias point of the amplifi er according to the scene brightness of the video stream. In the worst case, 1VP-P video (composite or Luminance + Sync in Y/C or YPBPR format) can exhibit a varying DC content of 0.56V, with the dynamic requirement being ...

Circuit 

 

Three Channel, Single Supply Video Line Driver (AC Coupled)

Nov 21st 2003
The LT6553 ultra-high-speed triple video driver configured for single-supply AC-coupled operation. This part is ideal for HD or high-resolution workstation applications that demand high bandwidth and fast settling. The amplifier gains are factory-set to two by internal resistors ...

Circuit 

 

Triple Video Line Driver (DC Coupled)

Nov 21st 2003
In DC-coupled systems, the video swings are fixed in relation to the supplies used, so back-terminated cable drivers need only provide 2V of output range when optimally biased. In most cases, this permits operation on lower power supply potential(s) than with AC-coupling (unclamped mode). Generally DC-coupled circuits use split ...

Circuit 

 

Clamped AC-Input Video Cable Driver

Sep 26th 2003
This circuit shows a means of driving composite video on standard 75Ω cable with just a single 3.3V power supply. This is possible due to the low output saturation levels of the LT6205 and the use of input clamping to optimize the bias point of the amplifi er for standard 1VP-P source video. The circuit provides an active gain ...

Circuit 

 

Cable Sense Amplifier for Loop Through Connections with DC Adjust

Jul 18th 2003
This circuit shows a means of providing a multidrop tap amplifier using the differential input LT6552. This circuit taps the cable (loop-through configuration) at a high impedance and then amplifies the signal for transmission to a standard 75Ω video load (a display monitor for example). The looped-through signal would continue ...

Circuit 

 

All-In-One Twisted-Pair Video Line Receiver, Cable Equalizer, and Display Driver

Jul 18th 2003
Twisted pair exhibits a rolloff characteristic that requires equalization to correct for, so this circuit shows a suitable feedback network that accomplishes this. Here again the outstanding common mode rejection of the LT6552 is harnessed to eliminate stray pickup that occurs in long cable runs. ...

Circuit 

 

3.3V Single Supply LT6551 RGB Plus SYNC Cable Driver (DC Coupled)

Jun 27th 2002
The LT6551 drives four cables and operating from a single 3.3V supply. The inputs need to have signals centered at 0.83V for best linearity. This application would be typical of standard-definition studio-environment signal distribution equipment (RGBS format). ...

Circuit 

 

DC Stabilized 1000uV/msec Op Amp

Nov 1st 1983
Adding a discrete output stage provides full control of the circuit operating currents thereby obtaining very fast ac signal response. The LT1001 is used to adjust the output dc offset to a very low value, uVs, not typical for very high speed amplifier designs. ...

Circuit