lvds ffc
LVDS (Low Voltage Differential Signal) is a serial data transmission technology that uses differential signaling to reduce electromagnetic noise and other interference that can degrade the quality of the signals transmitted.lvds ffc LVDS can transmit parallel or serial data, and it can operate over long distances at high speeds. This type of signaling is used in a number of applications, including LCD displays and computer graphics cards.
The main advantage of LVDS is its ability to operate at very high data rates without generating excessive electromagnetic interference.lvds ffc The differential signaling scheme makes it much less susceptible to external interference because the two wires carry opposite signals that tend to cancel each other out. This also makes LVDS more resistant to common mode noise that can interfere with single-ended schemes. The differential signals on the wires are sensed by a receiver as voltage differences, so the receivers reject noise that is coupled onto the lines.
In addition, LVDS requires very little power to operate, making it a good choice for applications with limited space and power.lvds ffc LVDS supports a range of operating temperatures and is compatible with a variety of power supplies. It is also tolerant to electrical disturbances such as ground shift, driver offset voltage and longitudinally coupled noise. LVDS can achieve a low Bit Error Rate (BER) with a minimum of +-1V ground shift and driver offset voltage on the output pins of the transmitters. LVDS can also tolerate a maximum of +2.2V receiver input voltage from the driver outputs to the receiver ground.
The LVDS drivers have current-mode outputs that can closely model the input impedance of the transmission line, which is important for minimizing cable loading effects.lvds ffc This feature is especially important in miniaturized devices where space is limited and the transmission line runs near other components that can generate noise. Several generations of LVDS drivers have been designed to support the varying power supply conditions and transmission lengths found in modern devices.
LVDS has become the dominant technology for connecting computer graphic cards to motherboards and other display-related circuitry.lvds ffc Its popularity stems from its ability to transfer large amounts of video and graphic data with high speed over links that can be several meters long, allowing designers to use multiple card slots in a system. LVDS is often implemented in conjunction with other technologies such as SCSI to provide higher data rates over longer links.
In the early 1990s, Apple Computer needed a way to transfer streams of digital video to its Macintosh computers.lvds ffc It worked with National Semiconductor to create QuickRing, a high-speed auxiliary bus that bypassed the NuBus backplane in Apple’s Macintosh systems to transfer multiple streams of digital video to the display processor. The system then became popular in notebook computers, flat panel display (FPD) monitors and other consumer electronics devices. For these high-resolution applications, LVDS can provide up to 24 channels of video, audio and other data with minimal pixel degradation and synchronization.
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