AK5356 Datasheet, PDF (20/22 Pages) Asahi Kasei Microsystems – LOW POWER 20BIT ADC WITH MIC AMP & PGA

ASAHI KASEI
[AK5356]
SYSTEM DESIGN
Figure 13 shows the system connection diagram. An evaluation board [AK5356] is available which demonstrates the
application circuit, optimum layout, power supply arrangement and measurement results.
C1: 0.1µ
C2: 10µ
1µ ⁺
+C2
47µ ⁺
C1
2.4∼3.3V Analog Power Supply
6.8k
6.8k
+ _C2
4.7µ
C1
2.2µ C1
+
C2 C1
2.0∼3.3V Analog Power Supply
+
1 RIN
2 VCOM
3 AVDD
4 AVSS
C2 C1
5 DVSS
1.8∼3.3V Digital Power Supply
+
6 DVDD
7 SDTO
Top View
PREOR 21
+ ^47µ
PRENR 20
0.33µ
PRER 19
PREL 18 ^0.33µ
PRENL 17 ^+47µ
PREOL 16
4.7µ
MICL 15
MIC
Device
Audio
Controller
Micro
Controller
Figure 13. System Connection Diagram Example
NOTE: Electrolytic capacitor value of VCOM depends on low frequency noise of supply voltage.
MS0171-E-00
- 20 -
2002/08