PCM1802

SLES023B – DECEMBER 2001 – REVISED MARCH 2002

7

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TYPICAL PERFORMANCE CURVES OF INTERNAL FILTER

HPF (low cut filter) frequency response

Figure 5. LCF Stopband Characteristics

Frequency [

× fS/1000]

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

0

0.0

0.1

0.2

0.3

0.4

AMPLITUDE

vs

FREQUENCY

Figure 6. LCF Passband Characteristics

Frequency [

× fS/1000]

–1.0

–0.8

–0.6

–0.4

–0.2

–0.0

0.2

0

123

4

AMPLITUDE

vs

FREQUENCY

analog filter—antialiasing filter frequence response

Figure 7. Antialias Filter Stopband Characteristics

–50

–45

–40

–35

–30

–25

–20

–15

–10

–5

0

f – Frequency – Hz

AMPLITUDE

vs

FREQUENCY

100

1k

10k

10M

100k

1M

Figure 8. Antialias Filter Passband Characteristics

–1.0

–0.9

–0.8

–0.7

–0.6

–0.5

–0.4

–0.3

–0.2

–0.1

–0.0

f – Frequency – Hz

AMPLITUDE

vs

FREQUENCY

1

10

100

100k

1k

10k

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.