AK4558EN Datasheet, PDF (89/94 Pages) Asahi Kasei Microsystems – 108dB 216kHz 32Bit CODEC with PLL

[AK4558]
18. Recommended External Circuits
Figure 77 and Figure 78 show the system connection diagram. An evaluation board is available which
demonstrates application circuits, the optimum layout, power supply arrangements and measurement
results.
■ Parallel Mode
Mode
Controller
Reset
Analog Supply
(2.4～3.6V)
1u
C1
C1
10u 0.1u
+
22 ^LIN
23 ^RIN
24 ^AVDD
25 ^VSS1
26 ^VCOM
27 ^LOUT
28 ^ROUT
AK4558
Top View
14 ^VDD18
13 ^VSS2
12 ^TVDD
11 ^MCKI
10 ^SDTI
9 ^BICK
8 ^SDTO
1.0u
0.1u 10u
+
Power Supply
(2.4～3.6V)
Audio
Controller
Figure 77. System Connection Diagram (PS pin= “H”, LDOE pin= “H”)
Note:
- VSS1 and VSS2 of the AK4558 must be distributed separately from the ground of external
controllers.
- All digital input pins must not be allowed to float.
- An AC coupling capacitor value of at least 10uF is recommended for the LIN and RIN pins to
preserve low frequency response.
015004500-E-02
- 89 -
2015/09