LVDS Trace Calculator
Low Voltage Differential Signaling
Calculate trace width and differential impedance for LVDS designs. From LCD panels to camera interfaces, get the right 100Ω differential pair dimensions for reliable low-power, high-speed signaling.
Common LVDS Applications
| Application | Typical Pairs | Data Rate | Differential Z |
|---|---|---|---|
| LCD Displays | 4-8 pairs | 100-500 MHz | 100Ω |
| Camera (CSI-2) | 1-4 pairs | Up to 2.5 Gbps/lane | 100Ω |
| SerDes Links | 1-2 pairs | Up to 3.125 Gbps | 100Ω |
| FPD-Link III | 1-4 pairs | Up to 2.975 Gbps | 100Ω |
LVDS PCB Design Guidelines
100Ω Differential
Standard LVDS requires 100Ω differential impedance. Some variants (like RSDS) may use different values. Always check your specific interface specification.
Termination
LVDS uses a 100Ω termination resistor at the receiver end. This is often integrated into the receiver IC. External resistors may be needed for some designs.
Length Matching
Match P and N traces within 5 mils. For multi-pair interfaces like displays, match all data pairs to the clock within specification (typically ±100 mils).
LVDS vs Other Differential Standards
LVDS Characteristics
Comparison with Others
Typical LVDS Trace Dimensions
4-Layer Board (FR4, 1.6mm)
Design Notes
• Route as tightly-coupled differential pairs
• Keep pair-to-pair spacing ≥3x trace width
• Avoid routing near high-speed digital noise
• Use ground planes for reference
• Consider EMI if traces are long
* Use our calculator with your actual stackup for precise values.
Calculate Your LVDS Trace Dimensions
Use our free impedance calculator to determine exact trace width and spacing for your LVDS design. Enter your stackup parameters for accurate 100Ω differential calculations.
LVDS Design FAQ
What impedance for LVDS?
Standard LVDS uses 100Ω differential impedance with a 100Ω termination resistor at the receiver. This is the same as Ethernet and HDMI.
How long can LVDS traces be?
LVDS can work over several meters of cable or PCB trace. Practical limits depend on data rate and noise environment—typically 10-50cm on PCB.
Do I need external termination?
Many LVDS receivers have internal termination. Check your IC datasheet. If external termination is needed, place a 100Ω resistor near the receiver.
What's the difference between LVDS and SubLVDS?
SubLVDS (SLVS) uses lower voltage swing and is common in camera sensors. It typically uses the same 100Ω impedance but different voltage levels.
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