March 2020

PRIMITIVE OF THE MONTH

interp_xbit

This primitive models a digital buffer stage, of which output transition time is determined by a weighted interpolation of the two inputs' arrival times.

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MODEL OF THE MONTH

Digital phase interpolator

Check out how you can model a digitally-controlled phase interpolator stage found in many clock-and-data recovery (CDR) circuits by combining the 'interp_xbit' and 'dac' primitives.

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TIP OF THE MONTH

How to model a phase interpolator stage that operates over a wide frequency range

Learn how to use an 'interp_var_xbit' primitive to model a phase interpolator that operates over a wide frequency range.

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