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b =
1 + (1
a)
-
2
2
HPF(Z) =
1
Z
-
-
1
1
bZ
-
-
1
2
a
-
2
´
HPF Gain =
cos
+ sin
1
w
-
N
N
w
cos
w
N
2
-
1
2
-
1 +
cos
+ sin
1
-
w
w
N
N
cos
w
N
SBAS418I – SEPTEMBER 2007 – REVISED MARCH 2015
(13)
See the
section for an example of how to use this equation.
HPF Transfer Function
(14)
where
b
is calculated as shown in
(15)
Table 35. t
DR
Time for Data Ready (Sinc Filter)
f
DATA
f
CLK
(1)
128k
440
64k
616
32k
968
16k
1672
8k
2824
(1)
For SYNC and Wake-Up commands, f
CLK
= number of CLK cycles from next rising CLK edge directly after eighth rising SCLK edge to
DRDY falling edge. For Wake-Up command only, subtract two f
CLK
cycles.
is referenced by
and
.
46
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