Input Impedance of AnalogX and Voltage Divider
Posted: Sat Sep 23, 2017 9:43 pm
The specification page of AnalogX displays the input impedance of the device to be 10 Megaohms (Link page: https://wiki.autosportlabs.com/AnalogX. Whereas AnalogX takes an input of 5 V.
Let's say I am designing a voltage divider with two resistors of 40 kiloohms and 20 kiloohms.
Now for the loading condition of 10 Mohm, I am still getting the output voltage 16.644. I am using this loading calculator http://www.voltagedividercalculator.com ... r-dc-load/ putting 10 M ohm as the loaded resistors. I do know that raising the resistance values can impact in better output, but this will also reduce current to zero.
In the present scenario, I am getting 0.0000016 A, for higher value resistors I am hoping it to further scale down? So what will be the optimal solution for my case?
Let's say I am designing a voltage divider with two resistors of 40 kiloohms and 20 kiloohms.
Now for the loading condition of 10 Mohm, I am still getting the output voltage 16.644. I am using this loading calculator http://www.voltagedividercalculator.com ... r-dc-load/ putting 10 M ohm as the loaded resistors. I do know that raising the resistance values can impact in better output, but this will also reduce current to zero.
In the present scenario, I am getting 0.0000016 A, for higher value resistors I am hoping it to further scale down? So what will be the optimal solution for my case?