G005

Normalized Frequency [

× fS/1000]

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

0

0.0

0.1

0.2

0.3

0.4

G006

Normalized Frequency [

× fS/1000]

−1.0

−0.8

−0.6

−0.4

−0.2

0.0

0.2

0

1

2

3

4

G004

Normalized 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 = y128 and y64

G003

Normalized 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 = y128 and y64

Normalized Frequency [

× fS]

−200

−150

−100

−50

0

50

0

8

16

24

32

40

48

56

64

Oversampling Ratio = y128

G001

G002

Normalized Frequency [

× fS]

−200

−150

−100

−50

0

50

0

8

16

24

32

Oversampling Ratio = y64

7

PCM1803A

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SLES142B – JUNE 2005 – REVISED JULY 2016

Product Folder Links: PCM1803A

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Copyright © 2005–2016, Texas Instruments Incorporated

6.6 Typical Characteristics

6.6.1 Typical Curves of Internal Filter

6.6.1.1 Decimation Filter Frequency Response

All specifications at TA = 25°C, VCC = 5 V, VDD = 3.3 V, master mode, fS = 44.1 kHz, system clock = 384 fS,

oversampling ratio = ×128, 24-bit data (unless otherwise noted)

Figure 1. Overall Characteristics

Figure 2. Overall Characteristics

Figure 3. Stop-Band Attenuation Characteristics

Figure 4. Pass-Band Ripple Characteristics

6.6.1.2 Low-Cut Filter Frequency Response

All specifications at TA = 25°C, VCC = 5 V, VDD = 3.3 V, master mode, fS = 44.1 kHz, system clock = 384 fS,

oversampling ratio = ×128, 24-bit data (unless otherwise noted)

Figure 5. HPF Stop-Band Characteristics

Figure 6. HPF Pass-Band Characteristics