Hi team,
My customer is using the ADC0809, and they find that the START signal can't meet the requirement of our datasheet.
But it seems the operation of ADC0809 is OK, now they want to know if there is risk for some functions.
The schematic is as below:
The problem of the START signal is that:
1. There is a 2ns overshot in START(the yellow one), the voltage of the overshot has reached to -3.28V(as below)
The Ts is about 248ns, the Th is 560ns, all is larger than 50ns.(as below)
The yellow one is the START signal, the blue one is address signal.
3. They use the START signal to for the ALE signal.
Please help to check the timing and comment if this is a risk for above three timing problem
Lacey
Thanks a lot!
