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WM8728 Datasheet(PDF) 26 Page - Wolfson Microelectronics plc

No. de pieza WM8728
Descripción Electrónicos  24-bit, 192kHz Stereo DAC with Volume Control and DSD Support
PDF  28 Pages
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Fabricante Electrónico  WOLFSON [Wolfson Microelectronics plc]
Página de inicio  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8728 Datasheet(HTML) 26 Page - Wolfson Microelectronics plc

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WM8728
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WOLFSON MICROELECTRONICS LTD
PP Rev 1.2 April 2001
26
RECOMMENDED DSD EXTERNAL COMPONENTS
20
DVDD
DGND
LATI2S
AGND
AVDD
VMID
C
9
C
8
AGND
7
6
MUTE Control
WM8728
Notes:
1. AGND and DGND should be connected as close to the WM8728 as possible.
2. C
2, C3, C4 and C8 should be positioned as close to the WM8728 as possible.
3. Capacitor types should be carefully chosen. Capacitors with very low ESR are
recommended for optimum performance.
4. When using monophase DSD encoding pin 3 BCKIN should be tied to
DVDD. In Biphase DSD encoding BCKIN runs at 2 cycles per bit.
VREFP
VREFN
C
3
C
4
C
5
C
2
DVDD
C
1
19
SCKDSD
18
SDIDEM
VOUTR
11
C
6
VOUTL
C
7
AC-Coupled
VOUTR/L
to External LPF
16
MODE
17
MUTEB
8
AVDD
4
MCLK
3
BCKIN
2
DIN
DSD right bitstream
DGND
AGND
1
LRCIN
10
14
9
13
+
12
+
+
5
ZERO
15
CSBIWL
DGND
DVDD
DSD left bitstream
DSD bit clock
DSD biphase mode clock
Figure 31 External Connections for DSD Applications
RECOMMENDED EXTERNAL COMPONENTS VALUES FOR DSD
COMPONENT
REFERENCE
SUGGESTED
VALUE
DESCRIPTION
C1 and C5
10
µF
De-coupling for DVDD and AVDD.
C2 to C4
0.1
µF
De-coupling for DVDD and AVDD.
C6 and C7
10
µF
Output AC coupling caps to remove midrail DC level from outputs.
C8
0.1
µF
C9
10
µF
Reference de-coupling capacitors for VMID pin.
Table 23 External Components for DSD



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