How reduce Noise , Low-Noise voltage reference MAX6341?

Status
Not open for further replies.
A

asrock70

Full Member level 4
Joined
Oct 9, 2010
Messages
205
Helped
5
Reputation
10
Reaction score
5
Trophy points
1,298
Visit site
Activity points
3,314
Do you know of any appnote or the reference designdescribing the reduction of noise voltage reference?
MAX6341 have Noise 0.1Hz - 10Hz 2,4uVp-p, ´I would like to get the noise and the order below
 

You can always reduce noise with a low-pass filter, if you use a (low-pass corner frequency) « (min. unwanted noise frequency). The disadvantage: the reference voltage takes several of these respective time-constants to reach its final value.

I.e. with a simple RC filter with a corner frequency of - say - 0.01Hz , it will take several minutes to reach its final value. And you'll have to use low-noise (electrolytic) caps.
 

Nothing is simple.
RC LPF will be effective, resistance introduced into the circuit's own noise and mainly it will be a voltage drop. Therefore, you must add the output buffer.
And already we have a resistor, amplifier, everything travels with the temperature, the time and has an impact on the accuracy and stability of reference.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…