AK4452VN Datasheet, PDF (85/91 Pages) Asahi Kasei Microsystems – 115dB 768kHz 32-bit 2ch Premium DAC

[AK4452]
10. Recommended External Circuits
■ Typical Connection Diagram
Figure 77 shows system connection diagram, and Figure 79 shows the analog output circuit example.
Digital 3.3V
Analog 5.0V
DSP
Micro-
Controller
10u
+
1u
+
0.1u
1 MCLK
2 BICK
3 LRCK
4 SDTI1
5 TST1
6 TDMO1
7 DZF
8 CAD1
TST4 24
TST3 23
TST2 22
AVDD 21
AVSS 20 ^0.1u
AOUTR1P 19
AOUTR1N ₁₈
VREFH1
N
17
0.1u
+
10u
+10u
R1ch
LPF
R1ch
Mute
R1ch Out
L1ch
LPF
L1ch
Mute
L1ch Out
Digital
Ground
Analog
Ground
+
Electrolytic Capacitor
Ceramic Capacitor
Notes:
- Chip Address = “00”. BICK = 64fs, LRCK = fs
- Power lines of AVDD and VREFH1 should be distributed separately from LDO and etc. while keeping low
impedance.
- DVSS and AVSS must be connected to the same analog ground plane.
- Connect a capacitor that is larger than 10µF to each the VREFH1 pin.
- All digital input pins should not be allowed to float.
Figure 77. Typical Connection Diagram (AVDD=5V, TVDD=3.3V)
Rev. 0.1
- - 85 - -
2014/04