f/fDATA

−160

−140

−120

−100

−80

−60

−40

−20

0

20

0

1

2

3

4

5

6

7

8

G026

f/fDATA

−160

−140

−120

−100

−80

−60

−40

−20

0

20

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

G025

f/fDAC

−5

−4

−3

−2

−1

0

1

2

3

4

5

0.0

0.1

0.2

0.3

0.4

0.5

Rolloff

FIR

Corrected

G027

DAC5686

www.ti.com ............................................................................................................................................................ SLWS147F – APRIL 2003 – REVISED JUNE 2009

MAGNITUDE

MAGNITUDE

vs

vs

FREQUENCY

FREQUENCY

Figure 41. Magnitude Spectrum for

Figure 42. Magnitude Spectrum for

8× Interpolation (dB)

16× Interpolation (dB)

MAGNITUDE

vs

FREQUENCY

Figure 43. Magnitude Spectrum for Inverse sinc Filtering

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