AK5385AVF Datasheet, PDF (17/24 Pages) Asahi Kasei Microsystems – 24Bit 192kHz DS ADC

ASAHI KASEI
[AK5385A]
SYSTEM DESIGN
Figure 4 shows the system connection diagram. An evaluation board is available which demonstrates application circuits,
the optimum layout, power supply arrangements and measurement results.
Digital Supply
3.0 ~ 5.25V
Reset
0.1µ
1 VREFL
10µ
2 AVSS
0.1µ
VREFR 28
10µ
AVSS 27
0.22µ 3 VCOM
TEST 26
4 LIN+
RIN+ 25
5 LIN-
RIN- 24
0.1µ
6 CKS0
AVDD 23
AK5385A 0.1µ
7 DVDD
AVSS 22
10µ
10µ
8 DVSS
BVSS 21
9 OVF
DFS1 20
10 PDN
HPFE 19
11 DIF
DFS0 18
12 M/S
MCLK 17
13 LRCK
CKS1 16
14 BICK
SDTO 15
Analog Supply
4.75 ~ 5.25V
DSP and uP
Note:
- AVSS, BVSS and DVSS of the AK5385A should be distributed separately from the ground of external digital
devices (MPU, DSP etc.).
- All input pins except pull-down (CKS0, CKS1 and TEST pin) pin should not be left floating.
Figure 4. Typical Connection Diagram
Digital Ground
System
Controller
Analog Ground
1 VREFL
VREFR 28
2 AVSS
AVSS 27
3 VCOM
TEST 26
4 LIN+
5 LIN- _AK5385A
6 CKS0
RIN+ 25
RIN- 24
AVDD 23
7 DVDD
AVSS 22
8 DVSS
BVSS 21
9 OVF
DFS1 20
10 PDN
HPFE 19
11 DIF
DFS0 18
12 M/S
MCLK 17
13 LRCK
CKS1 16
14 BICK
SDTO 15
Figure 5. Ground Layout
Note:
- AVSS BVSS, and DVSS must be connected to the same analog ground plane.
MS0265-E-01
- 17 -
2003/11