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Solutions Search - Display & Video Solutions

LT8570 VFD (Vacuum Fluorescent Display) Power Supply Switches at 1MHz

Feb 2nd 2015
The LT®8570 and LT8570-1 are PWM DC/DC converters. The LT8570 contains a 0.5A, 65V power switch, while the LT8570-1 contains a 0.25A, 65V power switch. The LT8570 and LT8570-1 can be configured as either a boost, SEPIC or inverting converter. ...

Circuit 

 

LT1615 1-Cell Li-Ion to 20V Converter for LCD Bias

Sep 12th 2014
The LT1615/LT1615-1 are micropower step-up DC/DC converters in a 5-lead low profile (1mm) ThinSOT package. The LT1615 is designed for higher power systems with a 350mA current limit and an input voltage range of 1.2V to 15V, whereas the LT1615-1 is intended for lower power and single-cell applications with a 100mA current limit ...

Circuit LTspice 

 

LT3471 OLED Driver

Sep 11th 2014
The LT3471 dual switching regulator combines two 42V, 1.3A switches with error amplifiers that can sense to ground providing boost and inverting capability. The low VCESAT bipolar switches enable the device to deliver high current outputs in a small footprint. The LT3471 switches at 1.2MHz, allowing the use of tiny, low cost ...

Circuit LTspice 

 

LT8580 VFD (Vacuum Fluorescent Display) Power Supply Switches at 1MHz Danger High Voltage! Operation by High Voltage Trained Personnel Only

Jul 21st 2014
The LT®8580 is a PWM DC/DC converter containing an internal 1A, 65V switch. The LT8580 can be configured as either a boost, SEPIC or inverting converter. ...

Circuit 

 

VFD (Vacuum Fluorescent Display) and Filament Power Supply

Jan 12th 2012
The LT8582 is a dual independent channel PWM DC/DC converter with a power good pin and built-in fault protection to help guard against input overvoltage and overtemperature conditions. Each channel consists of a 42V master switch and a 42V slave switch that can be tied together for a total current limit of 3A. ...

Circuit 

 

LT3579 VFD (Vacuum Flourescent Display) Power Supply Switches at 1MHz

Apr 28th 2010
The LT®3579 is a PWM DC/DC converter with built-in fault protection features to aid in protecting against output shorts, input/output overvoltage, and overtemperature conditions. The part consists of a 42V master switch, and a 42V slave switch that can be tied together for a total current limit of 6A. ...

Circuit 

 

VFD (Vacuum Fluorescent Display) and Filament Power Supply

Mar 23rd 2010
The LT3581 is a PWM DC/DC converter with built-in fault protection features to aid in protecting against output shorts, input/output overvoltages, and overtemperature conditions. The part consists of a 42V master switch, and a 42V slave switch that can be tied together for a total current limit of 3.3A. ...

Circuit 

 

LT3758 VFD (Vacuum Fluorescent Display) Flyback Power Supply

Jul 20th 2009
The LT3758 is a wide input range, current mode, DC/DC controller which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. The LT3758 drives a low side external N-channel power MOSFET from an internal regulated 7.2V supply. The fixed ...

Circuit 

 

2.7V to 4.2V to -5V at 90mA and 4.6V at 100mA AMOLED Power Supply

May 4th 2009
LT3582 are dual DC/DC converters with positive and negative outputs. The positive output voltage can be set between 3.2V and 12.775V in 25mV steps. The negative output voltage can be set between –1.2V and –13.95V in –50mV steps. Optional I2C Programming. ...

Circuit 

 

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 

 

5 Output Regulator For TFT-LCD Panels: 5V@0.5A, 22V@20mA, -10V@20mA, 3.3V@0.5A, 8V@80mA

Jul 28th 2008
The LT3513 5-output adjustable switching regulator provides power for large TFT-LCD panels, providing Vlogic, Avdd, Von and Voff ...

Circuit LTspice 

 

Li-Ion to +5V@25mA, +16V@1mA, –13V@1mA TFT LCD Power Supply + 10 White LEDs

Feb 11th 2008
The LTC3524 is an integrated BIAS and white LED power converter solution for small/medium-sized polysilicon thin film transistor (TFT) liquid crystal (LCD) display panels. ...

Circuit 

 

LCD Bias (+5V, -7.5V, +12.5V) Plus 8 LED Power Supply

Feb 11th 2008
The LTC3524 is an integrated BIAS and white LED power converter solution for small/medium-sized polysilicon thin film transistor (TFT) liquid crystal (LCD) display panels. A 1.5MHz synchronous boost converter generates a programmable low noise, high efficiency 25mA TFT supply of up to 6.0V. Regulated, low ripple charge pumps ...

Circuit LTspice 

 

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 

 

Li-Ion to Six White LEDs and OLED/LCD Bias

May 10th 2007
The LT3498 can provide both the positive bias voltage required for OLED or CCD bias as well as drive multiple white LEDs for display backlighting ...

Circuit LTspice 

 

Li-Ion to Two White LEDs and OLED/LCD Bias

May 10th 2007
The LT3498 can provide both the positive bias voltage required for OLED or CCD bias as well as drive multiple white LEDs for display backlighting ...

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 

 

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 

 

DC925A - LT3489EMS8E Demo Board | Triple Output, Boost Plus 23V Charge Pump & -8V Inverting Charge Pump

Sep 21st 2006
Demonstration circuit 925 features the LT3489EMS8E in a circuit specifically designed to drive large TFT/LCD displays. The demo circuit demonstrates small size and low component count in a Boost Circuit. It converts a 3.3V-6V input to 8V at 600mA, 23V at 10mA and -8V at 20mA. Since the maximum Vin of the LT3489 is 16V, this ...

Demo Board LTspice 

 

+24V and -16V LCD Bias

May 3rd 2006
Positive (24V@24mA) and negative (-16V@24mA) bias voltages for TFT LCD displays can be generated from a 3V to 6V input supply by the LT3487 ...

Circuit 

 

Buffered Input Multiplexer/ADC Driver

Aug 19th 2005
The LT6556 is a complete 3-channel wideband video 2:1 multiplexer with internally set gain of one. This part is ideal as an input port receiver for HD component or high-resolution RGB video products. The basic application circuit is shown in Figure 35, with 1kΩ output loads to represent subsequent processing circuitry (the ...

Circuit 

 

Input Video Selector and ADC Driver for Multimedia Display System

Aug 19th 2005
Input selection is readily implemented with the LT6556 on 5V, supporting all video resolutions including UXGA by virtue of its 750MHz bandwidth and 6.5ns settling time. For the AC-coupling shown, the outputs swing approximately ±0.7V about the mid-supply level, within an available range of 2.6VP-P. ...

Circuit 

 

Three Channel Integrated Multiplexer and Line Driver

Apr 29th 2005
The LT6555 is a complete 3-channel wideband video 2:1 multiplexer with internally set gain of two. This part is ideal as an output port driver for HD component or high-resolution RGB video products. The basic application circuit is shown here with terminations shown on all ports, though in many applications the input loading ...

Circuit 

 

4:1 RGB Multiplexer

Apr 29th 2005
Since the LT6555 includes an enable control line, it is possible to extend the selection range of the multiplexer. This circuit shows two LT6555 devices in a configuration that provides 4:1 selection of RGB sources to an RGB output port (these could also be YPBPR signals as well, depending on the source). To avoid frequency ...

Circuit 

 

DC883A - LT3473EDD | Li-Ion to 25V Step-Up DC/DC Converter, 3V to 4.2Vin, 25Vout @ 80mA

Mar 4th 2005
Demonstration circuit DC883 features the LT®3473 micropower step-up DC/DC converters with integrated Schottky diode and output disconnect circuitry. The output on DC883 is 25V at up to 80mA from a 3~4.2V input, while automatic Burst Mode operation maintains efficiency at light load. The lithium ion battery input voltage ...

Demo Board LTspice 

 

OLED Driver: 7V@350mA, -7V@250mA

Sep 23rd 2004
The dual boost/inverting LT3471 provides positive (7V@350mA) and negative (-7V@250mA) bias voltages for an OLED display from a single cell Li-Ion ...

Circuit LTspice 

 

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 

 

7V, 50mW OLED Driver from a 2V to 5.5V input

Mar 17th 2004
The LTC3459 controls peak inductor current when VIN is greater than or less than VOUT. This allows current to be controlled during start-up in a boost application or VOUT to be regulated below VIN when powered from a fresh battery. Peak current control makes the LTC3459 an ideal candidate for charging a back-up source such as ...

Circuit 

 

Li-Ion Powered Driver For 6 White LEDs and OLED Display

Mar 3rd 2004
The LT3466-1 integrates a high voltage boost converter for OLED Bias (16V@30mA) with a high performance white LED driver ...

Circuit 

 

Li-Ion to 10 White LEDs and LCD Bias (+/-8V) with Output Disconnect

Mar 3rd 2004
With two small external switched capacitor networks, the LT3466-1 can provide both positive and negative bias voltages (+/- 8V @ 10mA) for an LCD display as well as driving 10 white LEDs ...

Circuit 

 

Li-Ion Powered Driver For 6 White LEDs and OLED With Output Disconnect

Mar 3rd 2004
The addition of an external transistor adds output disconnect to the LT3466-1 boost converter ...

Circuit 

 

Li-Ion to 8 White LEDs and +/-15V TFT LCD Bias Supply

Mar 3rd 2004
The LT3466-1 provides a small, integrated solution for TFT LCD Bias (+/-15V @ 10mA) and backlighting (8 white LEDs) in a single package ...

Circuit 

 

5.1V, –15V, 15V Triple Output TFT-LCD Supply

Feb 18th 2004
From an input range of 1.5V to 4.6V, the LTC3450 generates all required bias voltages for a TFT LCD display: Avdd (5.1V at 10mA), VGH (15V at 500uA) and VGL (-15V at 500uA) ...

Circuit 

 

5.1V, –10V, 15V Triple Output TFT-LCD Supply

Feb 18th 2004
From an input range of 1.5V to 4.6V, the LTC3450 generates all required bias voltages for a TFT LCD display: Avdd (5.1V at 10mA), VGH (15V at 500uA) and VGL (-10V at 500uA) ...

Circuit 

 

5.1V, 15V, -5V Triple Output TFT-LCD Supply

Feb 18th 2004
From an input range of 1.5V to 4.6V, the LTC3450 generates all required bias voltages for a TFT LCD display: Avdd (5.1V at 10mA), VGH (15V at 500uA) and VGL (-5V at 500uA) ...

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 

 

Quad Output TFT-LCD Power Supply: 12.2V@500mA, 3.3V@2A, 35V@30mA, -5.5V@50mA

Sep 30th 2003
The LT1943 integrates 4 high efficiency switching regulators to provide 4 high power outputs for biasing TFT-LCD displays: 12.2V@500mA, 3.3V@2A, 35V@30mA, -5.5V@50mA ...

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 

 

YPBPR to RGB Converter

Sep 26th 2003
In this realization of a component video (YPBPR) to RGB adapter, amplifier count is minimized by performing passive arithmetic at the outputs, but this requires higher gains, thus a higher supply potential is needed for this (for at least the positive rail). One small drawback to this otherwise compact solution is that the ...

Circuit 

 

YPBPR to RGB Video Converter

Jul 18th 2003
This circuit shows LT6552 amplifiers connected to convert component video (YPBPR) to RGB. This circuit maps the sync on Y to all three outputs, so if a separate sync connection is needed by the destination device (e.g. studio monitor), any of the R, G, or B channels may be simply looped-through the sync input (i.e. set ZIN ...

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 Baseband Video Splitter/Cable Driver (DC Coupled)

May 2nd 2003
A simple video splitter application using an LT6206. Both amplifiers are driven by the input signal and each is configured for a gain of two, one for driving each output cable. Here again careful input biasing is required (or a negative supply as suggested previously). ...

Circuit 

 

LT6550 RGB to YPBPR Component-Video Conversion

Jun 27th 2002
Figure 15 shows a method of generating the standard definition YPBPR signals from an RGB source using a pair of LT6550 triple amplifiers. It should be noted that to ensure Y includes a correct sync, correct syncs should be present at all three inputs or else added directly at the Y output (gated 8.5mA current sink or 350Ω ...

Circuit LTspice 

 

S-Video Splitter (AC Coupled)

Jun 27th 2002
This figure shows an LT6551 quad amplifier driving two sets of “S-video” (Y/C format) output cables from a single Y/C source. Internal gain-setting resistors within the LT6551 reduce part-count. ...

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 

 

LT1945 Dual Output (+12V@20mA, -20V@10mA) Converter

Sep 20th 2001
From a 2.7V to 5V input, the LT1945 dual boost/inverting regulator generates both positive (12V@20mA) and negative (-20V@10mA) bias voltages for TFT LCD displays ...

Circuit LTspice 

 

Triple Output Power Supply (5V, 15V, -10V) for LCD Displays

Apr 26th 2001
From 2.7V to 4.2V, the LT1944-1 generates 3 supplies (5V@40mA, 15V@2.5mA, -10V@1mA) required to bias a small LCD display ...

Circuit 

 

TFT-LCD Bias Generator: 10V, 24V, -6V Output

Apr 26th 2001
With a small external charge pump network, the LT1947 produces all three required bias voltages for TFT-LCD displays: 10V@150mA, 24V@10mA and -6V@10mA ...

Circuit 

 

Four Output (-6.5V@500uA, 20V@500uA, 10V@2mA, 5 LED) Supply For Color LCD Displays

Apr 26th 2001
From a 2.7V to 4.2V input, the LT1944 can generate 3 required bias voltages (-6.5V@500uA, 20V@500uA, 10V@2mA) and drive a string of 5 white LEDs for backlighting ...

Circuit 

 

TFT-LCD Bias Generator: 12V, 20V, -6V Output

Apr 26th 2001
With a small external charge pump network, the LT1947 produces all three required bias voltages for TFT-LCD displays: 12V@120mA, 20V@10mA and -6V@20mA ...

Circuit 

 

High Speed RGB to YPBPR Converter

Jan 19th 2000
An LT6559 and an LT1395 can also be used to map RGB signals into YPBPR “component” video. The LT1395 performs a weighted inverting addition of all three inputs. The LT1395 output includes an amplification of the R input by –324/1.07k = –0.3. The amplifi cation of the G input is by –324/549 = –0.59. Finally, the B ...

Circuit 

 

TFT Bias (5V@40mA, 10V@2mA, -10V@2mA) and White LED Backlight Supply From Single Li-Ion Cell

May 25th 1999
The LT1942 is a highly integrated quad switching regulator designed to provide all necessary power supply functions for TFT displays, including the white LED backlight driver. The TFT supply output voltages are independently set, unlike charge pump solutions which have many limitations. ...

Circuit 

 

Buffered RGB to Color-Difference Matrix

Dec 11th 1998
Two LT1399s can be used to create buffered color difference signals from RGB inputs. In this application, four amplifiers are used to create color difference signals. The luminance signal Y is created using amplifiers A2 and A3. The remaining color-difference signals each use a single amplifier and the newly created Y output ...

Circuit 

 

RGB Video Inverter

Oct 14th 1998
This circuit is useful for viewing photographic negatives on video. A single channel can be used for composite or monochrome video. The inverting amplifier stages are only switched in during active video so the blanking, sync and color burst (if present) are not disturbed. To prevent video from swinging negative, a voltage offset ...

Circuit 

 

2:1 RGB Multiplexer and Cable Driver

Oct 14th 1998
The LT1675 is also an integrated 3-channel 2:1 multiplexer that includes gain of two for cable-driving applications. The basic configuration is shown in Figure 34. A single channel version for composite video applications is available as an LT1675-1. ...

Circuit 

 

Two-Input Video Fader

Feb 11th 1994
In some cases it is desirable to adjust amplitude of a video waveform, or cross-fade between two different video sources. This circuit provides a simple means of accomplishing this. The 0V to 2.5V control voltage provides a steering command to a pair of amplifier input sections; at each extreme, one section or the other takes ...

Circuit 

 

Gamma Correction Amplifier

Mar 23rd 1992
This circuit shows a schematic of a typical circuit which can correct for positive or negative gamma. This is an upgrade of a classic circuit which uses diodes as the nonlinear elements. The temperature variation of the diode junction voltages is compensated to the fi rst order by the balanced arrangement. LT1227s and LT1229s ...

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