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TYPICAL PERFORMANCE CURVES OF INTERNAL FILTER
DIGITAL FILTER
Decimation Filter Frequency Response
−200
−150
−100
−50
0
50
0 8 16 24 32
Frequency [× f
S
]
Amplitude – dB
G001
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
G002
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
G003
Frequency [× f
S
]
−10
−9
−8
−7
−6
−5
−4
−3
−2
−1
0
0.45 0.47 0.49 0.51 0.53 0.55
Amplitude − dB
–4.13 dB at 0.5×
G004
PCM1850A
PCM1851A
SLES173 – MARCH 2006
All specifications at T
A
= 25 ° C, V
CC
= 5 V, V
DD
= 3.3 V, master mode, f
S
= 48 kHz, system clock = 256 f
S
, 24-bit data (unless
otherwise noted).
AMPLITUDE AMPLITUDE
vs vs
FREQUENCY FREQUENCY
Figure 1. Overall Characteristics Figure 2. Stop-Band Attenuation Characteristics
AMPLITUDE AMPLITUDE
vs vs
FREQUENCY FREQUENCY
Figure 3. Pass-Band Ripple Characteristics Figure 4. Transition-Band Characteristics
9
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