WM8716
Production Data
APPLICATIONS INFORMATION
RECOMMENDED EXTERNAL COMPONENTS
DVDD
AVDD
8
15
9
DVDD
AVDD
AVDDR
AVDDL
+
C1
C2
7
20
DGND
+
C3
C4
C5
C6
DGND
14
10
19
AGND
AGNDR
AGNDL
AGND
28
27
26
23
22
ML/I2S
MC/DM1
MD/DM0
CSB/IWO
RSTB
Software I/F or
Hardware Control
C7
13
16
VOUTR
VOUTL
AC-Coupled Output
to External LPF
C8
12
17
24
25
MODE8X
WM8716
AVDD
R1
DIFFHW
MODE
21
ZERO
11
18
MUTEB
VMIDR
VMIDL
+
C11
C12
+
1
2
3
LRCIN
DIN
C9
C10
Audio Serial Data I/F
BCKIN
AGND
4
CLKO
XTI Buffered Output
5
6
XTI
System Clock Input or
Oscillator Input/Output
XTO
NOTES:
1. AGND and DGND should be connected as close to the WM8716 as possible.
2. 2 to C5, C9 and C11 should be positioned as close to the WM8716 as possible.
C
3. Capacitor type used can have a big effect on device performance. It is
recommended that capacitors with very low ESR are used and that ceramics
are either NPO or COG type material to achieve best performance from the
WM8716.
Figure 20 External Components Diagram
RECOMMENDED EXTERNAL COMPONENTS VALUES
COMPONENT
REFERENCE
SUGGESTED
VALUE
DESCRIPTION
C1 and C6
C2 to C5
10µF
0.1µF
10µF
0.1µF
10µF
10kΩ
De-coupling for DVDD and AVDD.
De-coupling for DVDD and AVDD.
C7 and C8
C9 and C11
C10 and C12
R1
Output AC coupling caps to remove VMID DC level from outputs.
Reference de-coupling capacitors for VMIDR and VMIDL.
Resistor to AVDD for open drain output operation.
Table 22 External Components Description
w
PD Rev 4.1 September 2006
22
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
