Datasheet

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Antialias
LPF
BCK
V
IN
L
Reference
V
REF
V
IN
R
Delta-Sigma
Modulator
×1/64
Decimation
Filter
with
High-Pass Filter
Power Supply
AGNDV
CC
V
DD
DGND
Clock and Timing Control
LRCK
DOUT
SCKI
B0004-10
Antialias
LPF
Delta-Sigma
Modulator
Serial
Interface
Mode/
Format
Control
FMT
MD1
MD0
TYPICAL PERFORMANCE CURVES OF INTERNAL FILTERS
DECIMATION FILTER FREQUENCY RESPONSE
Normalized Frequency [× f
S
]
−200
−150
−100
−50
0
50
0 8 16 24 32
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
PCM1808
SLES177A – APRIL 2006 – REVISED AUGUST 2006
Functional Block Diagram
All specifications at T
A
= 25°C, V
CC
= 5 V, V
DD
= 3.3 V, master mode, f
S
= 48 kHz, system clock = 512 f
S
, 24-bit data, unless
otherwise noted.
OVERALL CHARACTERISTICS STOP-BAND ATTENUATION CHARACTERISTICS
Figure 1. Figure 2.
6
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