April 2021

Model of the Month

Relaxation oscillator

Check out how to model a simple relaxation oscillator using the new 'integ_rst' primitives.

Tip of the Month

Profiling XMODEL simulation runtimes

This tip explains how to profile the XMODEL simulation runtimes and find out where the bottleneck is.

Primitive of the Month

filter_sel

This primitive models a continuous-time linear filter, of which transfer function can be selected from multiple choices by a wire-type digital input.

Q&A of the Month

Sweeping multiple parameter values in XMODEL

Learn how to run XMODEL simulations while sweeping more than one parameters.

Latest Issues

March 2026

EQCHECK, Adaptive Decision-Feedback Equalizer, and More

February 2026

XMODEL at DVCon US, Introducing EQCHECK, and More

January 2026

Generating Random Step Sequences for Stress-Testing, Measuring Single-Bit Responses, and More

December 2025

Season's Greetings, Checking a Clocked Comparator's Correct Output, and More

November 2025

Checking the Settling of an Analog Signal, Handling Inherited Nets with Legacy SPICE Netlisters, and More