WM8738 Production Data
w
PD, Rev 4.5, February 2012
16
APPLICATIONS INFORMATION
RECOMMENDED EXTERNAL COMPONENTS
DVDD
DGND
AVDD
CAP
C
12
C
11
AGND
1
14
Hardware
Control
WM8738
C
2
DVDD
C
1
4
FMT
AVDD
13
MCLK
3
BCLK
12
LRCLK
2
SDATO
Audio Serial Data I/F
AGND
9
+
5
+
+
11
NOHP
AGND
10
C
RIN
7
VREF
C
10
C
9
AGND
6
+
7
Notes:
1. AGND and DGND should be connected as close to the WM8738 as possible.
2. C
2
, C
3
, C
9
and C
11
should be positioned as close to the WM8738 as possible.
3. Capacitor types should be carefully chosen. Capacitors with very low ESR are recommended for optimum
performance.
C
4
C
3
LIN
5
C
8
DVDD
DVDD
6
C
C
8
R
1
R
4
R
2
R
3
Figure 9 External Components Diagram
RECOMMENDED EXTERNAL COMPONENTS VALUES
COMPONENT
REFERENCE
SUGGESTED
VALUE
DESCRIPTION
C1 and C4 10F
De-coupling for DVDD and AVDD
C2 and C3 0.1F
De-coupling for DVDD and AVDD
C5 and C7 1F
Analogue input AC coupling caps
C6 and C8 4.7nF
Analogue input filtering (RC) capacitor
R2 and R3 10k
Current limiting resistors
R1 and R4 680
Analogue input filtering (RC) resistor
C9 0.1F
Reference de-coupling capacitors for VREF pin
C10 10F
C11 0.1F
Reference de-coupling capacitors for CAP pin
C12 10F
Table 3 External Components Description
WM8738 Production Data
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PD, Rev 4.5, February 2012
17
PACKAGE DIMENSIONS
NOTES:
A. ALL LINEAR DIMENSIONS ARE IN MILLIMETERS (INCHES).
B. THIS DRAWING IS SUBJECT TO CHANGE WITHOUT NOTICE.
C. BODY DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSION, NOT TO EXCEED 0.25MM (0.010IN).
D. MEETS JEDEC.95 MS-012, VARIATION = AB. REFER TO THIS SPECIFICATION FOR FURTHER DETAILS.
Symbols
Dimensions
(mm)
Dimensions
(Inches)
MIN MAX MIN MAX
A
1.35 1.75 0.0532 0.0688
A1
0.10 0.25 0.0040 0.0098
B
0.33 0.51 0.0130 0.0200
C
0.19 0.25 0.0075 0.0098
D
8.55 8.75 0.3367 0.3444
E
3.80 4.00 0.1497 0.1574
e
1.27 BSC 0.05 BSC
H
5.80 6.20 0.2284 0.2440
h
0.25 0.50 0.0099 0.0196
L
0.40 1.27 0.0160 0.0500
0
o
8
o
0
o
8
o
REF:
JEDEC.95, MS-012
0.10 (0.004)
SEATING PLANE
DM001.C
E
D: 14 PIN SOIC 3.9mm Wide Body
H
B
D
A
A1
C
h x 45
o
-C-
8
71
14
L
e
WM8738 Production Data
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PD, Rev 4.5, February 2012
18
IMPORTANT NOTICE
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WM8738CGED/R

Mfr. #:
Manufacturer:
Cirrus Logic
Description:
Audio A/D Converter ICs Stereo ADC Low Power
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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