Timeline for Is this a good design & layout of an active differential 'scope probe?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 7, 2012 at 20:20 | vote | accept | Rocketmagnet | ||
| Apr 7, 2012 at 18:58 | comment | added | Rocketmagnet | OK, I have made the change to the planes. | |
| Apr 6, 2012 at 23:32 | comment | added | The Photon | Also it would be worth looking at the noise spectrum when you have nothing connected to the probe. If you see a peak in the 10 - 100 MHz range, you could suspect a capacitor problem. | |
| Apr 6, 2012 at 23:30 | comment | added | The Photon | Some kind of bad behavior at a specific frequency, probably somewhere between 10 and 100 MHz, like a low response or oscillation or ringing. | |
| Apr 6, 2012 at 18:58 | comment | added | Rocketmagnet | How will I recognize anti-resonance? | |
| Apr 6, 2012 at 16:30 | comment | added | The Photon | Anyway, the capacitor value is easy to change later if you have a problem...at least you know to look out for it. | |
| Apr 6, 2012 at 8:56 | comment | added | Rocketmagnet | Thanks Photon. Yes, I wondered about the ground plane. I'll make the change. About the capacitors: 100pF and 100nF are shown on the schematics on page 16. I also read the Murata app note, but I wasn't sure who to believe, so I went for the datasheet's suggestion. | |
| Apr 6, 2012 at 0:39 | history | answered | The Photon | CC BY-SA 3.0 |