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Differential Stripline Impedance Equation:
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Differential stripline impedance refers to the characteristic impedance between two conductors in a stripline configuration, which is crucial for maintaining signal integrity in high-speed differential signaling applications.
The calculator uses the differential stripline impedance equation:
Where:
Explanation: This equation calculates the differential impedance based on the single-ended impedance and the geometric relationship between conductor spacing and height above ground plane.
Details: Accurate differential impedance calculation is essential for designing high-speed digital circuits, ensuring proper signal transmission, minimizing reflections, and maintaining signal integrity in differential signaling systems.
Tips: Enter single-ended impedance in ohms (Ω), spacing in millimeters (mm), and height in millimeters (mm). All values must be positive numbers greater than zero.
Q1: What is the difference between single-ended and differential impedance?
A: Single-ended impedance is the impedance of a single conductor relative to ground, while differential impedance is the impedance between two conductors carrying differential signals.
Q2: When should I use differential stripline configuration?
A: Differential stripline is commonly used in high-speed digital systems, particularly when noise immunity and signal integrity are critical concerns.
Q3: How does spacing affect differential impedance?
A: Increased spacing between conductors generally increases differential impedance, while decreased spacing reduces it.
Q4: What are typical values for differential impedance?
A: Common differential impedance values are 100Ω for many high-speed interfaces, though specific applications may require different values.
Q5: Are there limitations to this equation?
A: This equation provides a good approximation but may have limitations with extreme geometries or very high frequency applications where more complex models may be needed.