ADS5295IPFP datasheet(67/93 Pages) TI2

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−80

−70

−60

−50

−40

−30

−20

−10

0.1

0.2

0.3

0.4

0.5

Normalized Frequency (fIN/fS)

Low-Pass

High-Pass

G024

−80

−70

−60

−50

−40

−30

−20

−10

0.1

0.2

0.3

0.4

0.5

Normalized Frequency (fIN/fS)

Low-Pass

Band-Pass 1

Band-Pass 2

High-Pass

G025

ADS5295

www.ti.com

SBAS595 – DECEMBER 2012

Predefined Coefficients

The built-in filter types (low pass, high pass, and band pass) use predefined coefficients. The frequency

response of the built-in filters is shown in Figure 62 and Figure 63.

Figure 62. Filter Response (Decimate-by-2)

Figure 63. Filter Response (Decimate-by-4)

The predefined coefficients for the decimate-by-2 and decimate-by-4 filters are listed in Table 11 and Table 12,

respectively.

Table 11. Predefined Coefficients for Decimate-by-2 Filters

DECIMATE-BY-2

COEFFICIENTS

LOW-PASS FILTER

HIGH-PASS FILTER

–22

–65

–52

–27

–2

–35

–107

–178

202

–4

–41

h10

636

–644

h11

1024

1061

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