Big changes await disk drive industry News & Analysis 7/29/2003 Post a comment The hard-disk drive industry is finally coming to terms with the reality that many of its underlying technologies are approaching their performance limits. Starting this year manufacturers are gearing up to debut faster, more cost-effective, less power-hungry serial technologies to replace parallel SCSI and ATA interfaces.
Managing Loss in High-Speed PCBs News & Analysis 7/11/2003 Post a comment As design frequencies increased into the 300-400 MHz range, and especially with the introduction of super-high-speed gigabit-per-second serial signaling, losses in PCB traces suddenly became impossible to ignore. Still, many designers are unsure when loss is really important, what causes
it, how it can be measured, and how to minimize it. This article examines all of these issues.
As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.
January 2016 Cartoon Caption ContestBob's punishment for missing his deadline was to be tied to his chair tantalizingly close to a disconnected cable, with one hand superglued to his desk and another to his chin, while the pages from his wall calendar were slowly torn away.122 comments