Signal Integrity

RSS

In earlier DDR systems, the clock, command, and address signals (here in referred to as C/A) were distributed to multiple DRAMs using a forked topology, in which these signals propagate to all the DRAMs in the system at approximately the same time. The propagation delays on the command and address lines (in such systems) introduced timing skew into the system, limiting the operating frequency of the bus and eventually impacting the performance of these memory systems.

Ever wonder how much energy is required to transmit data and why so much power is dissipated into heat? SIJ EAB member Yuriy Shlepnev takes a closer look.

Who doesn’t love an easy-to-use 2D field solver to calculate the single-ended or differential impedance of PCB transmission lines? Eric Bogatin takes this one from Sierra Circuits for a test drive.

Recent studies indicate that the industry is nearing the precipice where plated through hole via technology has reached a limit in supporting serial links with 28 GHz Nyquist frequency requirements. At DesignCon2021, a team from the Mayo Clinic presented this paper about their work to extend the “life” of conventional PCB technology.

Microchip Technology Inc. has eliminated the cost, complexity, and customization challenges of these hybrid solutions by offering a discrete-component-based, space-grade DC-DC power converter family that now includes 28V-input, 50-watt (W) radiation-tolerant options.

5 Series mixed signal oscilloscope (MSO). With numerous enhancements, the 5 Series B MSO delivers even more versatility while continuing to provide high-fidelity waveforms, spectrum analysis capabilities, and flexible signal access.  

With the recent introduction of the Averatek Semi-Additive Process (A-SAP) process, linewidths under 1 mil are possible using the same fabrication processing line as for traditional 4 mil wide lines. This opens up the possibility of using narrower traces in the BGA escape region than in long-path routing regions. However, using this routing architecture means the narrower traces in the BGA escape field are at a higher impedance than the wider, 50 ohm traces in the routing region. So, how long can these traces be before the impedance mismatch is a problem? The authors of this piece propose an analysis methodology to find out.

Impedance is the most fundamental and important electrical property of any component. With a very simple technique, anyone can simulate the impedance of any circuit in seconds using any version of SPICE, for free. Read on to learn more.

Kandou announced volume production of its Matterhorn™ family of USB-C® multiprotocol retimer solutions with USB4™ support.

As rated by reader views, here are the Top 5, Most Read Blogs on SIJ of all time. Thank you for your continued readership, as we look forward to bringing you many more great features in 2022 and beyond!