xwm8722eds ETC-unknow, xwm8722eds Datasheet - Page 22

• Manufacturer Part Number: xwm8722eds
• Description: Stereo Dac With Integrated Tone Generator And Line/variable Level Outputs
• Manufacturer: ETC-unknow

WM8722
RECOMMENDED EXTERNAL COMPONENTS
Figure 11 External Components Diagram
RECOMMENDED EXTERNAL COMPONENTS VALUES
Table 11. External Components Description
C5, C6, C7 and C8
Notes:
1. AGND and DGND should be connected as close to the WM8722 as
2. C
3. Capacitor types should be carefully chosen. Capacitors with very low
COMPONENT
REFERENCE
recommended for optimum
C1 and C4
C2 and C3
2
, C
C9,C10
2-wire Interface
3
C11
C12
Audio Serial Data I/F
, C
R1
SPI Interface
9
, C
10
and C
SPI or 2-wire
11
should be positioned as close to the WM8722 as
Interface
DGND
DVDD
SUGGESTED
C
VALUE
1
DGND
DVDD
0.1 F
0.1 F
10k
R1
10 F
10 F
10 F
1 F
+
C
C
C
9
10
2
16
17
18
19
20
14
6
2
4
5
1
7
3
DVDD
DGND
MC
MD
LATCH
BUSY
TCLK
DIN
LRCIN
BCKIN
SCKI
MXINR
MXINL
DESCRIPTION
De-coupling for DVDD and AVDD.
De-coupling for DVDD and AVDD.
Output AC coupling caps to remove midrail DC level from outputs.
Reference de-coupling capacitors for CAP pin.
AC coupling capacitors for setting DC inputs level of analogue
WM8722
LINEOUTR
LINEOUTL
VAROUTR
VAROUTL
AGND
AVDD
CAP
11
10
12
13
15
9
8
C
C
C
C
+
+
+
+
C
C
3
11
7
8
5
6
C
C
4
AGND
12
AVDD
AGND
+
+
AC-Coupled
Variable Outputs
to External LPF
AC-Coupled
Line Level outputs
to External LPF
AI Rev 2.1 June 2001
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