October 2022

Model of the Month

Modeling digital-to-analog converters (DAC)

This application note shows how to model a few basic types of DAC circuits and characterize their INL, DNL, SINAD, ENOB, etc.

Primitive of the Month

probe_value

This primitive samples the value of an xreal-typed signal at specified triggering events and record the results to a text file for further post-processing.

Tip of the Month

Recording signal values to a text file

Here is an example of recording the signal values to a text file using the 'probe_value' primitives.

XMODEL Release Updates

XMODEL 2022.10

This release introduces new primitives such as 'vlimit', 'ilimit', and 'probe_value' and new measurement scripts that simulate the BER bathtub curves, jitter transfer (JTRAN), and jitter tolerance (JTOL) of a high-speed receiver.