AK4538 Datasheet, PDF (57/70 Pages) Asahi Kasei Microsystems – 16Bit DS CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4538]
SYSTEM DESIGN (52pin QFN)
Figure 46 shows the system connection diagram for the 52-pin QFN version of the AK4538. An evaluation board
[AKD4538] is available which demonstrates the optimum layout, power supply arrangements and measurement results.
2.2µ
Analog Supply
2.4 ~ 3.6V
10µ
52
1µ
1 MICOUT
2 MDT
1µ
3 EXT
2.2k
4 MPE
2.2k
5 MPI
1µ
6 INT
0.1µ
7 VCOM
8 AVSS
0.1µ
9 AVDD
1µ
1µ 1µ
1µ 1µ C C C C
1µ
RRR
51 50 49 48 47 46 45 44 43 42 41 40
Top View
MUTET 39
HPL 38
HPR 37
HVSS 36
HVDD 35
SPN 34
SPP 33
M/S 32
XTI/MCKI 31
10Ω
0.22µ
16Ω
1µ
6.8Ω _47µ
6.8Ω
16Ω
0.22µ
10Ω
0.1µ 10µ
Analog Supply
2.4 ~ 3.6V
8Ω
C
10µ 0.1µ
10 PVDD
11 PVSS
12 VCOC
10kΩ
4.7n
13 NC
XTO 30
DVSS 29
DVDD 28
NC 27
C
0.1µ 10µ
10
14 15 16 17 18 19 20 21 22 23 24 25 26
Reset
DSP and uP
Notes:
- AVSS, DVSS, PVSS and HVSS of the AK4538 should be distributed separately from the ground of external
controllers.
- Values of R and C in Figure 46 should depend on system.
- All input pins should not be left floating.
Figure 46. Typical Connection Diagram
MS0198-E-01
- 57 -
2003/5