hi
I have test ADL5304 with PIN(PD), My PD is about 100nA in the room. I cover it up, PD is about 1nA.
ADL5304 is normal at PD 100nA, but it is normal at 1nA, Please give me some idea.
Follow is normal picture at 100nA , it is about 1.5V.
Follow is abnormal pitcture at 1nA.
Follow is ADL5304 Circuit diagram。
Thanks!
Looking at the 'scope picture, the frequency is 50 Hz, a common power line frequency. Its likely that the input is picking up power line interference. To measure low-level input current accurately, careful…
First, confirm the 50 Hz is line-frequency related. An easy way to do so is set the oscilloscope trigger source to LINE. If the waveform remains stable on screen, it's line-frequency related.
If line…
