Part Number: DDC114
Hi,
I am currently working with a DDC114 with a custom board.
I get the following value in TEST mode in RANGE 7 on channel 1. When i read the datasheet, on range 7 with 0pF detector the noise shall be 3.7 RMS noise (PPM FSR).
At 3 sigma it should translate into 11.1 peak to peak (PPM FSR). Now with 2^20 FSR x 11.1ppm = 11.64 count noise peak to peak.
I get about 20-25 on my custom board (this the graphic below).
Could you confirm that my calculation is good and that i have an issue on my board?
Thanks in advance, Cyril.