ak4342 AKM Semiconductor, Inc., ak4342 Datasheet - Page 39

• Manufacturer Part Number: ak4342
• Description: 24-bit Stereo Dac With Hp-amp & 2v Line-out
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Figure 32 shows the system connection diagram. An evaluation board [AKD4342] is available which demonstrates the
optimum layout, power supply arrangements and measurement results.
Note:
MS0506-E-02
Power Supply
Power Supply
1.6 ∼ 3.6V
2.7 ∼ 3.6V
-
-
-
-
-
A 2Ω resistor should be added in series between HVDD/PVDD pins and power supply line in
order to limit the current.
These capacitors should use low ESR (Equivalent Series Resistance) over all temperature range. When these
capacitors are not bipolar, the positive side should be connected CP pin or analog ground.
AVSS, DVSS, PVSS and HVSS of the AK4342 should be distributed separately from the ground of external
controllers.
All digital input except for pull-up pins should not be left floating.
If TVDD voltage is the same as DVDD voltage, TVDD pin is directly connected to DVDD pin and the capacitor
(10µF and 0.1µF) connected to TVDD pin can be removed.
Digital Ground
+
µP
10u
Analog Ground
2.2u
+
10u 0.1u
Figure 32. Typical Connection Diagram in 3-wire mode
+
1u
0.1u
0.1u
0.1u
25
26
27
28
29
30
31
32
MUTET
VCOM
AVDD
AVSS
DVSS
DVDD
TVDD
I2C
SYSTEM DESIGN
Analog Input
- 39 -
AK4342EN
Aux-out
Top View
Lineout
DSP
0.1u
HPR
HPL
HVEE
PVEE
PVSS
PVDD
CN
CP
16
15
14
13
12
11
10
9
(+):Note
2.2u
2.2u
(+):Note
0.1u
[AK4342]
Headphone
2006/07