Timeline for Raspberry Pi 3 GPIO Input Offset Current Specs?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 19, 2016 at 15:28 | comment | added | MadHatter | Peter Bennett, I am reading a digital signal, but the signal has a very weak drive. I am concerned with input leakage current. | |
| Aug 19, 2016 at 0:37 | comment | added | Peter Bennett | Reading between the lines, I suspect that you are trying to make an analog measurement using the Pi's digital GPIO pins. As far as I know, the Pis do not have any analog inputs, so you can't do analog meaurements with them (without adding an external ADC). | |
| Aug 18, 2016 at 23:00 | answer | added | mbrig | timeline score: 1 | |
| Aug 18, 2016 at 22:45 | answer | added | Daniel V | timeline score: -2 | |
| Aug 18, 2016 at 21:33 | comment | added | MadHatter | Yes but I'm feeding the input with a source that could be around 47k to 100k Ohm, so it is no longer irrelevant. I am trying to avoid adding a buffer amplifier to save space... | |
| Aug 18, 2016 at 21:32 | comment | added | Majenko | I guess \$V_{IL}\$ and \$V_{IH}\$ are most likely \$0.3V_{CC}\$ and \$0.6V_{CC}\$ respectively. Current is mostly irrelevant for an input - it is high impedance. | |
| Aug 18, 2016 at 21:11 | history | asked | MadHatter | CC BY-SA 3.0 |