Hi team,
I have a question about the signal source resistance value.
The circuit which my customer is considering is as follows.
The total input impedance(10MΩ//22MΩ) is 6.9MΩ.
As far as I calculated the voltage drop error,if the signal source resistance is 3.3kΩ or less,
it will be 1LSB(=3mV) or less.
Q1) I believe if the signal source resistance is 1.5kΩ or less,
the voltage drop error will be less than 1LSB even if considering the variation
of the input impedance.
Is my thinking reasonable?
note: From the following past post,I understand that you don't provide a minimum or maximum value,
but I'd like to know the validity even if you can not ensure it.
Sincerely,
Tsuyoshi Tokumoto
