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WM1824CGEFL/V
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P23
WM1824
Production Data
w
PD, Rev 4.1, December 2011
16
POWER DOMAINS
Figure 9 Power Domain Diagram
Power Domain
Name
Blocks Using
This Domain
Domain Description
DAC Power Supplies
3.3V ± 10%
AVDD
Line Driver
DAC
DC Servo
Analogue Supply
3.3V ± 10%
LINEVDD
Charge Pump
Digital LDO
Digital Pad buffers
Analogue Supply
1.8V – 3.3V ± 10%
DBVDD
Digital
Input Pins
Digital Buffer Supply
Internally Generated Power Supplies and References
1.65V ± 10%
VMID
DAC, LDO
Ext decoupled resistor string
-3.3V ± 10%
CPVOUTN
Line Driver
Charge pump generated voltage
Table 5 Power Domains
Production Data
WM1824
w
PD, Rev 4.1, December 2011
17
DIGITAL FILTER CHARACTERISTICS
PARA
METER TEST
CONDITIONS
MIN
TYP
MAX
UNIT
DAC Filter – 256fs to 1152fs
Passband
0.1dB
0.454fs
Passband Ripple
0.1
dB
Stopband
0.546fs
Stopband attenuation
f > 0.546fs
-50
dB
Group Delay
10
Fs
DAC Filter – 128fs and 192fs
Passband
0.1dB
0.247fs
Passband Ripple
0.1
dB
Stopband
0.753fs
Stopband attenuation
f > 0.753fs
-50
dB
Group Delay
10
Fs
TERMINOLOGY
1.
Stop Band Attenuation (dB) – the degree to
which the frequency spectrum is attenuated
2.
Pass-band Ripple – any variation of t
he frequency response in the pass-band region
WM1824
Production Data
w
PD, Rev 4.1, December 2011
18
DAC FILTER RESPONSES
-120
-100
-80
-60
-40
-20
0
0
0.5
1
1.5
2
2.5
3
Frequenc
y (Fs
)
Res
pons
e (dB)
-0.2
-0.1
5
-0.1
-0.0
5
0
0.05
0.1
0.15
0.2
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
Frequenc
y (Fs
)
Res
pons
e (dB)
Figure 10 DAC Digital Filter Frequency
Response
– 256fs to 1152fs Clock Modes
Figure 11 DAC Digital Filter Ripple –
256fs to 1152fs Clock
Modes
-100
-80
-60
-40
-20
0
0
0.1
0.2
0.3
0.4
0
.5
0.6
0.7
0
.8
0.9
1
Frequenc
y (Fs
)
Res
pons
e (dB)
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0
0
.
0
50
.
1
0
.
1
5
0
.
20
.
2
50
.
30
.
3
5
0
.
40
.
4
50
.
5
Frequenc
y (Fs
)
Res
pons
e (dB)
Figure 12 DAC Digital Filter Frequency
Response
– 128fs and 192fs Clock Modes
Figure 13 DAC Digital Filter Ripple – 128fs to 192fs
Clock
Modes
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P23
WM1824CGEFL/V
Mfr. #:
Buy WM1824CGEFL/V
Manufacturer:
Cirrus Logic
Description:
Audio D/A Converter ICs Stereo DAC w/ 2Vrms ground ref line Dvr
Lifecycle:
New from this manufacturer.
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