March 2024

Technical Paper

A UVM/SystemVerilog Testbench for an LDO Voltage Regulator

Check out this UVM testbench that performs the line/load transient & regulation tests and IDDQ & PSSR measurements on a low-dropout voltage regulator circuit in a single run.

Model of the Month

Modeling a digital buffer with adjustable rise and fall delays

Can you model a buffer stage of which rising and falling delays are individually adjusted by digital inputs?

Tip of the Month

Fixing coarse-resolution waveforms displayed with third-party waveform viewers

Got stair-case waveforms when viewing xreal-type signals with PrimeWave or ViVA? Well, it's not XMODEL to blame.

Primitive of the Month

slice

This primitive continuously compares the two xreal-typed inputs and produces an xbit-type output indicating which one is higher.

Latest Issues

March 2025

Silicon Photonics Simulation with XMODEL, Measuring I-V Curves, and More

February 2025

Catching Elusive Voltage Spikes with Assertions, Modeling VCO with Extra Digital Inputs, and More

January 2025

Modeling Delta-Sigma Digital-to-Analog Converters, XMODEL at DVCon US, and More

December 2024

Modeling Mixed-Signal Processing-in-Memory Circuits, Filtering Phase Noise, and More

November 2024

Modeling a Digital LDO, Tips on Modeling High-Pass Filters, and More