Hi, I was wondering if I have a 30mA current getting into the In+ of LTC2508 in a long period of time, e.g. three months, would LTC2508 features be affected in anyways? e.g. the dynamic range?
Thanks for the reply!
" The only way to inject 30mA into the In+ input is by exceeding the absolute maximum rating for In+" is it because the absolute maximum for Analog Input Leakage Current is 10nA or because the absolute maximum for Digital Input Current is 10uA?
your statement is absolutely right according to Note.1, on the other hand, Note.3. says "This product can handle input currents up to 100mA below ground or above REF or OVDD without latch-up".
The In+ input (See Figure 3 of the data sheet.) goes straight into a 45pF capacitor except for protection diodes that are normally reverse biased. The only way to draw any significant current into the input is to take the input voltage above REF or below ground. Exceeding REF or ground by more than 300mV exceeds the absolute maximum ratings for the LTC2508-32.