December 2024

Technical Paper

X-PIM: Fast Modeling and Validation Framework for Mixed-Signal Processing-in-Memory (PIM)

Researchers at Sungkyunkwan University used XMODEL to evaluate the system-level performance of transistor-level mixed-signal PIM circuits, achieving simulation speeds >300x faster than SPICE.

Q&A of the Month

How does XMODEL simulate nonlinear circuits and systems?

For fast and accurate event-driven simulation of analog circuits in SystemVerilog, XMODEL performs Laplace-domain computations. How, then, does it handle nonlinear circuits?

Tip of the Month

Shaping the phase noise of a clock with an arbitrary transfer function

You don't need a phase-locked loop (PLL) to filter the phase noise of an input clock. Using the 'clk_to_phase' and 'phase_to_clk' primitives, you can shape the phase noise with just a 'filter' primitive.

Primitive of the Month

clk_to_phase

This primitive extracts the phase value of an input clock.

Latest Issues

April 2025

Modeling NAND Flash Memory, Measuring Comparator's Offset, and More

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