ASAHI KASEI
[AK5385B]
Compare PCB layout example between AK5385B and AK5394A
Analog Ground
Analog Ground
VREFL
0.1µ
0.1µ
0.1µ
0.1µ
0.1µ
10µ
10µ
10µ
10µ
10µ
10µ
1
2
3
4
5
6
7
8
9
VREFL+
VREFL-
VCOML
AINL+
AINL-
ZCAL
VD
VREFR+ 28
VREFR- 27
VCOMR 26
AINR+ 25
AINR- 24
VA 23
1
2
3
4
5
6
7
8
9
VREFR 28
AVSS 27
TEST 26
RIN+ 25
RIN- 24
(short)
(short)
AVSS
VCOM
LIN+
0.22µ
0.22µ
0.22µ
5V
Analog
5V
Analog
LIN-
0.1µ
CKS0
DVDD
DVSS
OVF
AVDD 23
AVSS 22
BVSS 21
DFS1 20
HPFE 19
DFS0 18
MCLK 17
CKS1 16
SDTO 15
3.0 ~ 5.25V
Digital
0.1µ
3.0 ~ 5.25V
Digital
0.1µ
AGND 22
BGND 21
DFS1 20
HPFE 19
DFS0 18
MCLK 17
FSYNC 16
SDATA 15
10µ
10µ
DGND
CAL
10µ
10µ
10 RSTN
10 PDN
11 DIF
11 SMODE2
12 SMODE1
13 LRCK
12 M/S
13 LRCK
14 BICK
14 SCLK
AK5394A
AK5394A
AK5385B
AK5385B
Pin #
1
VREFL+
VREFL
Lch Positive Voltage Reference Output Pin, 3.75V
Normally connected to AGND with a large
electrolytic capacitor and connected to VREFL−
with a 0.22µF ceramic capacitor.
Lch Voltage Reference Input Pin, AVDD
Normally, connected to AVSS with a 10µF
electrolytic capacitor and a 0.1µF ceramic capacitor.
AVSS
VREFL−
Analog Ground Pin
Lch Negative Voltage Reference Output Pin, 1.25V
Normally connected to AGND with a large
electrolytic capacitor and connected to VREFL+
with a 0.22µF ceramic capacitor.
2
6
ZCAL
CKS0
Master Clock Select 0 Pin
(Internal Pull-down Pin, typ. 100kΩ)
Zero Calibration Control Pin
This pin controls the calibration reference signal.
CAL
OVF
9
Calibration Active Signal Pin
Analog Input Overflow Detect Pin
SMODE2
Serial Interface Mode Select Pin
SMODE1
Serial Interface Mode Select Pin
FSYNC
DIF
11
12
Audio Interface Format Pin
M/S
Master / Slave Mode Pin
CKS1
16
Master Clock Select 1 Pin
(Internal Pull-down Pin, typ. 100kΩ)
AVSS
Frame Synchronization Signal Pin
VREFR−
Analog Ground Pin
Rch Negative Voltage Reference Output Pin, 1.25V
Normally connected to AGND with a large
electrolytic capacitor and connected to VREFR+
with a 0.22µF ceramic capacitor.
VCOMR
Rch Common Voltage Pin, 2.75V
27
26
28
TEST
Test Pin (Internal Pull-down Pin, typ. 100kΩ)
VREFR
Rch Voltage Reference Input Pin, AVDD
Normally, connected to AVSS with a 10µF
electrolytic capacitor and a 0.1µF ceramic capacitor.
VREFR+
Rch Positive Reference Output Voltage, 3.75V
Normally connected to AGND with a large
electrolytic capacitor and connected to VREFR−
with a 0.22µF ceramic capacitor.
MS0406-E-00
2005/08
- 5 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
