ASAHI KASEI
[AK4522]
SYSTEM DESIGN
Figure 7 shows the system connection diagram. This is an example which analog signal is input by single ended circuit. In
case of differential input, please refer to Figure 10. An evaluation board is available which demonstrates application
circuits, the optimum layout, power supply arrangements and measurement results.
4.5 ∼ 5.5V
Analog Supply
2.7 ∼ 5.5V
Digital Supply
+
10u
0.1u
0.1u
+
10u
1
2
VREFH
AINR+
AINR-
AINL+
AINL-
VA
VCOM 24
23
AOUTL 22
470
470
AOUTR
2.2n
0.1u
0.1u
3
+
+
4.7u
2.2n
21
20
CMODE
PD
4
5
0.1u
4.7u
5
6
DGND 19
VD 18
AK4522
0.1u
+
10u
7
AGND
DIF0
8
MCKI 17
DEM1 16
Format
Setting
9
DIF1
Mode
Setting
10
11
12
15
14
13
LRCK
SCLK
SDTI
DEM0
SMUTE
SDTO
Audio
Controller
Figure 7. Typical Connection Diagram
Notes:
- When AOUT drives some capacitive load, some resistor should be added in series between AOUT and
capacitive load.
- All input pins except CMODE pin should not be left floating.
M0020-E-02
2012/01
- 13 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
