AK4640_05 Datasheet, PDF (62/78 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4640]
SYSTEM DESIGN (AK4640VN)
Figure 45 shows the system connection diagram for the AK4640VN. An evaluation board [AKD4640] is available which
demonstrates the optimum layout, power supply arrangements and measurement results.
1µ
1µ 1µ
RRR
1µ 1µ C C
1µ
1 MICOUT
2 NC
1µ
3 EXT
2.2k
4 MPE
2.2k
5 MPI
1µ
6 INT
2.2µ ^0.1µ
Analog Supply
2.4 ~ 3.6V
10µ 0.1µ
7 VCOM
8 AVSS
9 AVDD
10µ 0.1µ
10 PVDD
11 PVSS
10kΩ ^{12 VCOC}
4.7n
13 NC
Top View
1µ
1µ
MUTET 39
HPL 38
HPR 37
10Ω
0.22µ
16Ω
6.8Ω _47µ
16Ω
6.8Ω
0.22µ
10Ω
HVSS 36
HVDD 35
0.1µ 10µ
Analog Supply
2.4 ~ 3.6V
SPN 34
8Ω
SPP 33
M/S 32
XTI/MCKI 31
C
XTO 30
C
DVSS 29
DVDD 28
0.1µ 10µ
NC 27
10
Reset
DSP and uP
Notes:
- AVSS, DVSS, PVSS and HVSS of the AK4640 should be distributed separately from the ground of external
controllers.
- Values of R and C in Figure 45 should depend on system.
- All digital input pins should not be left floating.
Figure 45. Typical Connection Diagram (AK4640VN)
MS0273-E-02
- 62 -
2005/04