Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 Data Sheet
Product codes
ATEVK1105
724
AT32UC3A
34.6.2
Interpolation filter
The interpolation filter interpolates from f
s
to 128f
s
. This filter is a 4th order Cascaded Integrator-
Comb filter, and the basic building blocks of this filter is a comb part and an integrator part.
34.6.3
Sigma Delta Modulator
This part is a 3rd order Sigma Delta Modulator consisting of three differentiators (delta blocks),
three integrators (sigma blocks) and a one bit quantizer. The purpose of the integrators is to
shape the noise, so that the noise is reduces in the band of interest and increased at the higher
frequencies, where it can be filtered.
34.6.4
Data Format
Input data is on two’s complement format.
32058K
AVR32-01/12