Popular electrical standards such as USB, Ethernet, RS-485 and CAN use
differential signaling and balanced twisted-pail media to provide reliable high-speed communication.
Acronyms ANSI American National Standards Institute | EMC Electromagnetic Compatibility | EMI Electromagnetic Interference | ESD Electrostatic Discharge | I/O Input/output | ICT Information Communications Technology | IEC International Electrotechnical Commission | IEEE Institute of Electrical and Electronics Engineers | LAN Local Area Network | LVDS Low-voltage
Differential Signaling | SAN Storage Area Network | SAS Serial Attached | SCSI SCSI Small Computer System Interface | USB Universal Serial Bus
Most important,
differential signaling allows the receiver to filter out noise.
To mitigate many of the design problems associated with high-speed single-ended and/or parallel busses, Serial ATA uses low voltage
differential signaling. With this approach, each data signal is in fact transmitted over two lines which carry equal and opposite versions of the signal.
Because multi-gigabit signals use
differential signaling, and have rise/fall times less than 100 ps, it is important to match both sides of the differential signal to less than 10 ps, which translates to a length of just tens of mils on a PCB.
The 14 m[m.sup.2] 100-pin TQFP-packaged component includes four integrated SDI cable drivers, two SDI output drivers, two relocked loop-through drivers and a 5-bit
differential signaling (LVDS) parallel bus for FPGA interface.
* An integrated video graphics array controller and the Graphics Media Accelerator 950 for graphics via a Peripheral Component Interconnect Express x16 port, low-voltage
differential signaling and TV-out connector.
The HDMI standard uses transition minimized
differential signaling (TMDS) technology, which provides differential signals with nominal amplitude transitions of 500mV.
IDT (Integrated Device Technology, Inc.) (Nasdaq:IDTI), a communications IC company, has announced its entry into the high-performance clock distribution market with the introduction of a family of industry leading, low-voltage
differential signaling (LVDS) fan-out buffers.
It boasts throughput exceeding 10Gbps utilizing low voltage
differential signaling, (LVDS) technology.
Differential signaling schemes are a common approach to achieving higher noise immunity for critical signals in a high speed digital design.
The Open Low Voltage
Differential Signaling Display Interface v0.95, or OpenLDI, defines how an FPD connects to the display driver in a laptop computer.
