AK4524 Datasheet, PDF (26/31 Pages) Asahi Kasei Microsystems – 24BIT 96KHZ AUDIO CODEC

ASAHI KASEI
[AK4524]
SYSTEM DESIGN
Figure 10 & Figure 11 show the system connection diagram. This is an example which the AK4524 operates at X’tal mode.
In case of external clock mode, please refer to Figure 11. An evaluation board (AKD4524) is available which demonstrates
application circuits, the optimum layout, power supply arrangements and measurement results.
4.75 ~ 5.25V
Analog Supply
10u ⁺
0.1u10u
+
1 VCOM
2 AINR
3 AINL
4 VREF
0.1u
5 AGND
6 VA
7 TEST
C
8 XTO
9 ^XTI
C
VD
10 XTALE
AK4524
AOUTR+ 28
Rch
LPF
AOUTR- 27
AOUTL+ 26
Lch
LPF
AOUTL- 25
DGND 24
VD
23
0.1u 0.1u
VT
22
CLKO 21
M/ S
20
PD
19
Rch Out
Lch Out
5
2.7 ~ 5.25V
Digital Supply
Audio
Controller
11 LRCK
12 BICK
13 SDTO
CIF
18
CS
17
CCLK 16
Mode
Setting
14 SDTI
CDTI
15
Notes:
- X’tal Oscillation circuit is specified from 11.2896MHz to 24.576MHz.
- AGND and DGND of AK4524 should be distributed separately from the ground of external controller etc.
- When AOUT+/- drives some capcitive load, some resistor sholud be added in series between AOUT+/- and
capacitive load.
- All input pins except pull-down pin (TEST) should not be left floating.
Figure 10. Typical Connection Diagram (X’tal mode)
X’tal Frequency
11.2896MHz, 12.288MHz
16.384MHz, 16.9344MHz, 18.432MHz
22.5792MHz, 24.576MHz
C
33pF
15pF
10pF
Table 12. External capacitance example for X’tal
(Please contact X’tal oscillator manufacturer)
M0050-E-01
- 26 -
1999/5