Frequency [× fS]

−1.0

−0.8

−0.6

−0.4

−0.2

0.0

0.2

0.0

0.1

0.2

0.3

0.4

0.5

0.6

Oversampling

Ratio = ×128 and ×64

G004

Frequency [× fS]

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

0

0.00

0.25

0.50

0.75

1.00

Oversampling

Ratio = ×128 and ×64

G003

Frequency [× fS]

−200

−150

−100

−50

0

50

0

8

16

24

32

40

48

56

64

Oversampling Ratio = ´128

G001

Frequency [× fS]

−200

−150

−100

−50

0

50

0

8

16

24

32

Oversampling Ratio = ×64

G002

8

PCM1802

SLES023D – DECEMBER 2001 – REVISED DECEMBER 2016

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Copyright © 2001–2016, Texas Instruments Incorporated

6.6.1 Typical Characteristics: Internal Filter

6.6.1.1 Digital Filter: Decimation Filter Frequency Response

TA = 25°C, VCC = 5 V, VDD = 3.3 V, Master mode, fS = 44.1 kHz, system clock = 384 fS, oversampling ratio =

×128, and 24-bit data (unless otherwise noted).

Figure 7. Amplitude vs Frequency Overall Characteristics

Figure 8. Amplitude vs Frequency Overall Characteristics

Figure 9. Amplitude vs Frequency Stop-Band Attenuation

Characteristics

Figure 10. Amplitude vs Frequency Pass-Band Ripple

Characteristics