the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth, etc.

learn more…

DDR2 problem


Having some issues with a 225MHz DDR2 implementation at high temperature.I am wondering if the probl......

asked by bryan lastest answer by Hermann.Ruckerbauer

5 years 10 months 21 days

0

votes

3

answers
2114 views

Ground vias and the land of ID ("It Depends")


At the risk of finding myself embroiled in a furball, I thought I'd see if I could clear up (in my o......

asked by jeff.loyer lastest answer by scott

5 years 11 months 1 day

0

votes

5

answers
2574 views

time domain simulation w/ PDN planes


Hello experts,I'm trying to evaluate the impact of power plane noise on the HS signals. The sim setu......

asked by sherman.chen lastest answer by scott

5 years 11 months 2 days

0

votes

15

answers
2000 views

Ground vias around signal via


Hello Experts,I have a question on ground vias placement around signal via.My opinion is, if we have......

asked by aaditya.kandibanda lastest answer by weirsi

5 years 11 months 8 days

0

votes

14

answers
1835 views

plane inductance


Hi SI experts,Please consider this case:Two adjacent planes.One is used as high power ground plane.T......

asked by bowden.ivor

5 years 11 months 9 days

0

votes

0

answers
1759 views

Single ended Noise OR Differential Noise


Hi folks,I am doing power noise analysis on a system that uses SSTL IO buffers. Iam seeing the rippl......

asked by naresh.dhamija lastest answer by skgupta.sanjeev

5 years 11 months 15 days

0

votes

11

answers
1848 views

Re: si-list Digest V14 #214


Joel,In addition to Steve's reference to 802.3ap, I would also refer you to ANSIVITA 46.6 (if you ha......

asked by eric.tollefson lastest answer by sherman.chen

6 years 6 days

0

votes

1

answers
1938 views

Noise coupling from TI's MSP430FR5728 MCU to TI's......


Hi, expertAny one has experience with TI's MSP430FR5728 MCU? I had a noise issue when it used to con......

asked by 陆敏琪 lastest answer by dmarc-noreply

6 years 7 days

1

votes

2

answers
2343 views

Need a equation of inductance calculation for mic......


Hello everyone,Now I want to calculate a approximate value for inductance of microstripline over a g......

asked by wangwensong1986 lastest answer by cristian.gozzi

6 years 8 days

0

votes

9

answers
2864 views

treating physical structure of systems as a colle......


Hi All,I am presenting a short webinar using GoToMeeting next Tuesday on treatingthe physical struc......

asked by doug

6 years 27 days

0

votes

0

answers
1568 views

power planes on adjacentlayers crossing each othe......


Hi SI-LIST,We are using a 12 layer PCB stack up and have power planes on layer 6 andlayer 7 (just to......

asked by ashok15687 lastest answer by Wolfgang.Maichen

6 years 2 months 15 days

0

votes

6

answers
1026 views

Do narrow ground areas on PCBs radiate?


I was once told by an EMI consultant not to have a narrow ground area onPCB that did not have stitch......

asked by joel lastest answer by Gert.Havermann

6 years 2 months 23 days

0

votes

4

answers
1161 views

Termination of unused Ethernet pairs


HiI've got an board with 10/100 Ethernet on it and we have no margin inconducted emissions tests for......

asked by james.dowle lastest answer by leeritchey

6 years 3 months 7 days

0

votes

1

answers
1843 views

Insertion loss for Back-drilled vias at higher fr......


Hi all, I am doing HFSS simulation to compare performance of a 12Gbps 60milsconnector (Press fit ......

asked by bala89si lastest answer by Gert.Havermann

6 years 4 months

0

votes

5

answers
1810 views

Reference for DDR3 signals


Hi Guys,I'm currently doing DDR3 analysis. My board uses DIMM Modules and operates @ 1600Mbps. DIMM ......

asked by razeen_rulez lastest answer by liewluping

6 years 4 months 18 days

0

votes

3

answers
2296 views

free jitter webinar Wed May 7


Hi folks-Join me and Alan Blankman on Wed May 7 at 2 pm EDT for our free webinar"Essentials of Jitte......

asked by eric

6 years 4 months 24 days

0

votes

0

answers
1405 views

What is the intention of this application of ferr......


Hi,My first post on the reflector! :)I was looking through some documentation for the Xilinx FPGAs a......

asked by carson.au lastest answer by weirsi

6 years 5 months 12 days

0

votes

8

answers
2545 views

Grounding of PCB mounting holes.


I would like hear opinions on the subject of grounding PCBs.I have heard and encountered the followi......

asked by joel lastest answer by Gert.Havermann

6 years 5 months 22 days

0

votes

1

answers
2432 views

Heat Sink Hook Grounding


Hi Experts,What is the impact of grounding Heat sink anchors?I want to use them as probe ground poin......

asked by ranjith.raviprakash lastest answer by weirsi

6 years 6 months

0

votes

22

answers
639 views

Clarification on Trace Routing over Plane Splits


Hi all -I have previously spent time in the high-speed realm, routing PCIe,SATA, HT, and many other ......

asked by movax lastest answer by movax

6 years 6 months 1 day

0

votes

4

answers
2564 views
Looking for more? Browse the complete list of questions, or popular tags. Help us answer unanswered questions.