7.3.19.4 Filter
The IIR filter is as follows:
Equation 9. w(n) = (a
0 × DATA_OUT(n) + a
1 × w(n – 1) + a
2w(n – 2))
where
- a0, a1, and a2 are the IIR filter coefficients,
- DATA_OUT(n) is the DATA_OUT output prior to the IIR filter,
Equation 10. DATA_OUTF(n) = (b
0 × w(n) + b
1 × w(n – 1) + b
2w(n – 2)
where
- b0, b1, and b2 are the IIR filter coefficients,
- and DATA_OUTF(n) is the output of the PGA305 device after the second-order IIR filter.