Electronic Design

Eye Diagrams, Bathtub Curves, And Bit-Error Rates

On an oscilloscope's eye-pattern diagram, the distance between peak deterministic and random jitter amplitudes (the unit interval, or UI) is often called a "bathtub," which functions as a ...
EDN

Product how-to: HSPICE accurately analyzes gigabit circuits like DDR4 & USB3

Connecting an application processor to a DRAM chip through a 3200 Mbps LPDDR4 interface is not any easier than routing a 2600 MHz 4G LTE antenna. While RF front ends may enjoy ceramic packages and ...
EDN

Look for jitter in a bathtub

Imagine you're under pressure to move a hypothetical multi-gigabit-per-second communications design to production. One problem remains elusive—the high-speed communication between chips suffers ...
Electronic Design

Eye-Diagram Analysis Speeds DDR SDRAM Validation

Double-data-rate synchronous dynamic random access memory (DDR SDRAM) physical-layer testing is a crucial step in making sure devices comply with the JEDEC specification. The ultimate goal is to ...