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about ALL Digital Delay Line

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dendrite

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I made an all-digital delay line (only use the inverters).
But in the PTV condition, the delay of slow condition is three times of the fast condition.
I want some advice. Thank you!
 

Yes. The simple inverter delay chain is various time in different corner. If you want accurate timing, you must desgin DLL.
 

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    dendrite

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Thank you. I'll do it.
Yun Lin said:
Yes. The simple inverter delay chain is various time in different corner. If you want accurate timing, you must desgin DLL.
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