Tool/software:
Hi Expert,
Have a nice day! I have question need your professional support:
I want to know what is the “Maximum capacitive load” mean? Why it should be < 1nF?
If I connect RC Low-pass filter on the out put, need the C to be less than 1nF?
Thanks!
Best Regards,
Leo Ma
Hello Leo,
Thank you for your post.
If you were to place a 1.5nF capacitor on the output then you would see oscillations in the output due to stability.
If you place a series resistor on the output before the capacitor this can help stability with higher capacitive loads.
I would recommend a resistor in the range of 600Ohms to 1kOhms.
A good rule of thumb is to exceed the output impedance over frequency for your variant.
You will see that the A4 plot is reaching ~550Ohms at HF. This is why I am recommending the 600Ohm to 1kOhm range.
I hope this helps,
Joe
Hi Joe,
Customer now test INA186-Q1 (not INA181-Q1):
R=5.1K, C=10nF, with large Vout ripple:
R=5.1K, C=100nF, with small Vout ripple:
Are the parameter(R=5.1K, C=100nF,) reasonable?
Regards,
Leo Ma
