Generally, the negative reference voltage generated from the positive reference voltage is an inverting op amp. Then, if accuracy is required, two precision matched resistors are required. Then I saw this circuit for generating a negative precision reference voltage without precision resistors on the Internet. Please help analyze the principle.
Rosemarie 發表於 October 6, 2020
This is to take ADR127 as the reference voltage source, and then realize the output of the negative reference voltage through the negative feedback of AD8603.
Hakeem 發表於 October 6, 2020
What is the function of the 0.1uF capacitor?
Kalie 發表於 October 6, 2020
0.1uF is the decoupling capacitor
Shalom 發表於 October 6, 2020
In fact, it would be better to add a capacitor bank and a decoupling network.
