PCM1850

PCM1851

SLES108 − MARCH 2004

www.ti.com

9

High-Pass Filter Frequency Response

Figure 5. HPF Pass-Band Characteristics

Frequency [

× fS/1000]

−1.0

−0.8

−0.6

−0.4

−0.2

0.0

0.2

0

123

4

AMPLITUDE

vs

FREQUENCY

Figure 6. HPF Stop-Band 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

ANALOG FILTER

Antialiasing Filter Frequency Response (at PGA gain = –5.5 dB)

−6.5

−6.4

−6.3

−6.2

−6.1

−6.0

−5.9

−5.8

−5.7

−5.6

−5.5

Figure 7. Antialiasing Filter Pass-Band

Characteristics

f – Frequency – kHz

AMPLITUDE

vs

FREQUENCY

0.1

1

10

1k

100

−50

−45

−40

−35

−30

−25

−20

−15

−10

−5

0

Figure 8. Antialiasing Filter Stop-Band

Characteristics

f – Frequency – kHz

AMPLITUDE

vs

FREQUENCY

1

10

100

10k

1k

f–3dB = 300 kHz

All specifications at TA = 25°C, VCC = 5 V, VDD = 3.3 V, master mode, fS = 48 kHz, system clock = 256 fS, 24-bit data, unless otherwise noted