AK5374 Datasheet, PDF (47/51 Pages) Asahi Kasei Microsystems – 24-bit Stereo ADC with USB Interface

[AK5374]
SYSTEM DESIGN
Figure 18 shows the system connection diagram. An evaluation board (AKD5374) is available for fast evaluation as well
as suggestions for peripheral circuitry.
To Host
+5V
USB
D+ D-
Regulator
+3.3V
10u 0.1u
0. 1u
C
X ’ta l= 24M Hz
1.5k
C
Rd
18
18
R-ch
M ic ropho ne
L-ch
28 ATIO
29 VREF
4.7u 0.1u
30 VCOM
4.7u 0.1u
31 MPWR
10u
0.1u
1u
32 AVDD
33 VSS3
34 MICRN
35 MICRP
1u
36 NC
AK5374EN
Top View
VSS2 18
DVDD 17
0.1u 10u
TESTM2 16
CSN 15
SK 14
EPAO 13
EPAI 12
VSS1 11
TESTM1 10
1u
5 6k
1u
3 300p
1 00k
330 0p
MUTE SW
EEP-
R OM
Notes:
- “C” and “Rd” values are dependent on the crystal. When the 24MHz crystal oscillator is used (CKM pin =
“H”), AT-41-24.000M-LN-N-0005 (Nihon Dempa Kogyo) or HC49SFNB24000H0PESZ1 (Kyocera) is
recommended. When the 16MHz crystal oscillator is used (CKM pin = “L”), AT-41-16.000M-LN-N-0005
(Nihon Dempa Kogyo) or HC49SFNB16000H0PESZ1 (Kyocera) is recommended.
- VSS1-3 must be connected the same ground plane.
- All digital input pins must not be left floating.
Figure 18. System Connection Diagram
MS1197-E-00
- 47 -
2010/05