AK5371VQ Asahi Kasei Microsystems, AK5371VQ Datasheet - Page 14

• Manufacturer Part Number: AK5371VQ
• Description: 2CH A/D CONVERTER WITH USB I/F
• Manufacturer: Asahi Kasei Microsystems

MS0103-E-00
The following figure shows the system connection diagram. This is an example which uses external 1K bit EEPROM (AK93C45A)
as Device and String Descriptor. If EEPROM is not used, EPEN pin should be tied to DGND.
Ceramic capacitors (0.1uF) for VA pin, VD pin, VREF pin and VCOM pin should be located as near as possible.
System Block Diagram
ASAHI KASEI
MS0103-E-00
R1:4.7k
Phone Jack
STEREO SW
R1:4.7k
<REMARK> This drawing does NOT mean physical pin locations/ordering
0.1u
0.1u
C2:0.33u
C1 is specified for lower end cut-off frequency
C3 forms Anti-aliasing filter in conjuction with the
internal resistor at AMPR2O/AMPL2O
R0: 0 resister when BIASSEL is Low
100
C1:1.0u<
C1:1.0u<
100
C2:0.33u
300 (TBD) resister when BIASSEL is High
u
u
R0
0.1u
C3:1000p
VREF
MICBIAS
MICR
AMPR1O
AMPR2I
MICL
AMPL1O
AMPL2I
4.7u 0.1u 4.7u
AMP2RO
C3:1000p
VCOM
AMP2O
4.7u
0.1u
8200p
VA AGND
51k
LFLT1,2
14
6800p
BGND
18k
XTALIN
0.1u
4.7u
15p
VD DGND
Testmode 1
Testmode 2
Testmode 3
XTALOUT
15p
EPAO
EPDI
11.2896M
RSTN
Test
DP
DN
SK
CS
0.1u
10
56k
3300p
10u
GND
10uH
1.5k
5V
D-
D+
EEPROM
GND
analog
GND
Regulator
To Host/Hub
[AK5371]
2001/06
digital
GND
0.1u
10u