I want to measure current as small as 0.1mA
I tried looking for current sense amplifiers but I didn't find any which can work at this range.
Please suggest some DIY solution.
- Please don't ask "Why do I need this?", "What is the current source?"
- Please don't suggest ready made expensive market ammeters.
Current is DC, 10-15 uA error is tolerable, steps can be as large as 10 uA, max current will be less than 5mA. Voltage drop of 5% is acceptable (applied biased on my load will vary from 10 V DC to 30V DC) Budget is not an issue, I want to make it myself. No preference regarding recording.