Low-Voltage Differential Signaling (LVDS) is a new technology addressing the needs of today’s high performance data transmission applications. The LVDS interface standard is becoming the most popular differential data transmission standard in the industry. This is driven actwo simple features: “Gigabits @ milliwatts!” LVDS interface delivers high data rates while consuming significantly less power than competing technologies.

LVDS technology is a low swing, differential signaling technology, which allows single channel data transmission at hundreds or even thousands of Megabits per second (Mbps). Its low swing and current-mode driver outputs create low noise and provide very low power consumption across a wide range of frequencies. LVDS technology allows products to address high data rates ranging from 100’s of Mbps to greater than 2 Gbps. For all of the above reasons, it has been deployed across many market segments wherever the need for speed and low power exists.

Advantages of Low-Voltage Differential Signaling (LVDS) Interface

  • Saving power with Low-voltage power supply compatibility
  • LVDS is a low-noise and noise-tolerant technology, minimizing problems. Low noise generation and High noise rejection
  • LVDS transceivers are cost-efficient products that can also be integrated around digital cores providing a higher level of integration.
  • Easy termination for Robust transmission signals
  • Maximum switching speed. High performance can be achieved using common, off-the-shelf CAT3 cable and connectors, and/or FR4 material.
  • LVDS is a cost-effective solution for low-power digital design
  • LVDS moves data much faster than TTL, so multiple TTL signals can be serialized or multiplexed into a single LVDS channel, reducing board, connectors, and cabling costs.
  • LVDS consumes very little power, thereby reducing or eliminating power supplies, fans, and other peripherals.

The differential data transmission method used in LVDS is less susceptible to common-mode noise than single-ended schemes. Differential transmission uses two wires with opposite current/voltage swings instead of the one wire used in single-ended methods to convey data information. The advantage of the differential approach is that if noise is coupled onto the two wires as common-mode (the noise appears on both lines equally) and is thus rejected by the receivers, which looks at only the difference between the two signals. The differential signals also tend to radiate less noise than single-ended signals due to the canceling of magnetic fields. In addition, the current-mode driver is not prone to ringing and switching spikes, further reducing noise.

LVDS technology solutions eliminate the trade-offs in speed, power, noise, and cost for high-performance data transmission applications. In doing so, LVDS not only achieves great benefits in existing applications, but opens the door to many new ones.