Datasheet

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TYPICAL PERFORMANCE CURVES OF INTERNAL FILTER
Digital Filter—Decimation Filter Frequency Response
Frequency [× f
S
]
−200
−150
−100
−50
0
50
0 8 16 24 32 40 48 56 64
Oversampling Ratio = 128
Amplitude − dB
G001
Frequency [× f
S
]
−200
−150
−100
−50
0
50
0 8 16 24 32
Amplitude − dB
Oversampling Ratio = 64
G002
Frequency [× f
S
]
−100
−90
−80
−70
−60
−50
−40
−30
−20
−10
0
0.00 0.25 0.50 0.75 1.00
Amplitude − dB
Oversampling
Ratio = 128 and 64
G003
Frequency [× f
S
]
−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
Amplitude − dB
Oversampling
Ratio = 128 and 64
G004
PCM1802
SLES023C – DECEMBER 2001 – REVISED JANUARY 2005
AMPLITUDE AMPLITUDE
vs vs
FREQUENCY FREQUENCY
Figure 1. Overall Characteristics Figure 2. Overall Characteristics
AMPLITUDE AMPLITUDE
vs vs
FREQUENCY FREQUENCY
Figure 3. Stop-Band Attenuation Characteristics Figure 4. Pass-Band Ripple Characteristics
All specifications at T
A
= 25 ° C, V
CC
= 5 V, V
DD
= 3.3 V, master mode, f
S
= 44.1 kHz, system clock = 384 f
S
,
oversampling ratio = × 128, 24-bit data, unless otherwise noted.
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