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.
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.