Prev: number of iterations in cordic
Next: CIC Filter Length
From: analog_fever on 5 Aug 2010 15:48
I am reading about CIC filters used for an Sigma Delta converter. In that
the author mentions that

- For a 2nd order filter, decimating by N, the length of the impulse
response is 2N+1

- For a 3rd order filter, decimating by N, the length of the impulse
response is 3N.

- For a 4th order filter, decimating by N, the length of the impulse
response is 4N.

The filter has to operate for a min number of cycles at least equal to the
length of the impulse response.

Can somebody explain how he is defining the length of the impulse response
here?
 | 
Pages: 1
Prev: number of iterations in cordic
Next: CIC Filter Length