ASAHI KASEI
[AK2573A]
Ⅶ. Circuit Example
Fig-A illustrates circuit example of AK2573A.
Fig-A Circuit Example
VCC = 3.3V +/- 0.2V
C11 C12 C13 C14
PD
RPD
LD
L1
CPD
R1
C20
C19
C1
L1: Ferrite Bead (Murata BLM18BD102)
fpd = 1/ (2*π*RPD*CPD) = 1kHz～10kHz
R1 = 10Ω +/- 1%
AVSS
PDMON
BIAS
VDDMD
NC
R2
R2 = 12kΩ +/- 1%
VDDDR
C17
C18
R3 = R4 = R5 = R6 = 4.7kΩ～10kΩ
VSSDR
BIASMON
MODMON
TEST1
TEMPMON
TEMPALM
CURRALM
OPTALM
DATAALM
NC
C1 = 1uF
C12=C14=C16=C18=C20 = 0.01uF or 0.001uF
AK2573AVB
C11=C13=C15=C17=C19 = 0.1uF
TEST2
TEST3
R3
TEST4
DVSS
Mod_def 1
TEST5
SCL
Open
TEST6
SDA
Mod_def 2
R5
R4
Tx_Fault
LVPECL I/F
(see below)
C16
C15
VCC or GND
Normal Operation with Open: Pull-down
Shutdown Operation with Open: Pull-up
R6
For full access: GND
For write protection: Open or VDD
Tx_Disable
LVPECL I/F
DATA Only
DC Coupling
R111
DATA Only
AC Coupling
DATA & CLK
DC Coupling
R121
C101
R101
TD +
TD +
TD +
DATAP
DATAP
DATAP
R112
R122
R123
TD -
R113
TD -
DATAN
TD -
C102
DATAN
SEL
DATAN
SEL
R114
R124
SEL
CLKP
R125
R126
CLKP
CLKN
VDD or Open
CLK +
CLKN
VDD or Open
CLKP
R101 = 100Ω
C101 = C102 >= 0.01uF
R111 = R113 = 130Ω
R112 = R114 = 82Ω
R127
CLK -
CLKN
R128
R121 = R123 = R125 = R127 = 130Ω
R122 = R124 = R126 = R128 = 82Ω
<MS0189-E-01>
-37-
2004/5
AKM [ ASAHI KASEI MICROSYSTEMS ]
