mrinalmani
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Hi!
My work is generally limited to power electronics and therefore I do not have much of experience with high frequency signal transmission.
However, an application requires carrying 5 digital lines, from one portion of a 4-layer PCB to another portion. Length of traces will be approx 50mm. Frequency is 24MHz.
1. Do I need some special treatment for routing the lines or can I just route them simply as I have been routing other traces?
2. I used a simple microstrip impedance calculator software an it shows that at 24MHz the capacitance is approx 2pF/inch. For two inch trace it should be 4pF. This should be 1.8Kohm impedance at 24MHz, but the software shows an impedance of only 70Ohm. What am I missing?
3. Please give some guidelines how to route the traces with minimum mutual interference. Signal voltage = 3.3V
Thanks
My work is generally limited to power electronics and therefore I do not have much of experience with high frequency signal transmission.
However, an application requires carrying 5 digital lines, from one portion of a 4-layer PCB to another portion. Length of traces will be approx 50mm. Frequency is 24MHz.
1. Do I need some special treatment for routing the lines or can I just route them simply as I have been routing other traces?
2. I used a simple microstrip impedance calculator software an it shows that at 24MHz the capacitance is approx 2pF/inch. For two inch trace it should be 4pF. This should be 1.8Kohm impedance at 24MHz, but the software shows an impedance of only 70Ohm. What am I missing?
3. Please give some guidelines how to route the traces with minimum mutual interference. Signal voltage = 3.3V
Thanks