AK4562 Datasheet, PDF (26/29 Pages) Asahi Kasei Microsystems – LOW POWER 20BIT CODEC WITH PGA

ASAHI KASEI
[AK4562]
SYSTEM DESIGN
Figure 21 shows the system connection diagram. An evaluation board [AKD4562] is available which demonstrates
application circuit, optimum layout, power supply arrangements and measurement results.
28 27 26 25 24 23 22
1 OPGAR
2 LOUT2
3 ROUT2
4 LIN1
5 RIN1
6 LIN2
7 RIN2
AK4562
CDTI 21
LRCK 20
MCLK 19
TST 18
BCLK 17
SDTI 16
SDTO 15
Micro
Controller
Audio
Controller
+
2.2u
8 9 10 11 12 13 14
0.1u
0.1u _0.1u
AGND
System
Digital GND
0.1u
2.2V ~ 3.0V Analog Supply
+ ^10u
+10u
+10u
1.8V ~ 3.0V Digital Supply
10 ohm
Figure 21. System Connection Diagram Example
Notes:
- When AOUT drives some capacitive load, some resistor should be added in series between AOUT and capacitive
load.
- TST pin always fixes to “L”.
- AGND and DGND pins connect to AGND.
MS0031-E-00
- 26 -
2000/05