AK2574 Datasheet, PDF (29/30 Pages) Asahi Kasei Microsystems – 156M Laser Diode Driver + APC for Burst Mode

ASAHI KASEI
[AK2574]
Ⅶ. Circuit Example
Fig-A illustrates circuit example of AK2574.
Fig-A Circuit Example
C19
C20
C17
PD
C1
37
VCC = 3.3V +/- 0.2V
C18
LD
R8
25
R1 = 330Ω +/- 1%
R2 = 12kΩ +/- 1%
R3 = 82kΩ +/- 1%
R5=R6=R7 = 4.7kΩ～10kΩ
R8 = 4.7Ω～10Ω
C1=C2=0.1uF +/- 50%
(under operating temperature)
C11=C13=C15=C17=C19=C21 = 0.1uF
C12=C14=C16=C18=C20=C22
= 0.01uF or 0.001uF
C2
R1
IBIASC2
IBIASR1
C16
VSSMD _C15
VDDMD
PDIN
VDDDR
R3
R2
TESTMON
VSSDR ^C13
C14
BIAS _AK2574VB TEST2
AVDD
TEST3
C21
C22
AVSS
TXACT
TEST4
TEST5
R131
R133
LVPECL I/F
TEST1
BRSTP
DVSS
DVDD
R5 _{C11 C12}
BRSTN
TEST6
R132
Open
R134
VCC or GND
1
R6
Pull-up or pull down
Do not leave open
VCC or GND
Normal Operation with Open: Pull-down
Shutdown Operation with Open: Pull-up
R7
Do not leave open
13
R131 = R133 = 130Ω
R132 = R134 = 82Ω
LVPECL I/F
(see below)
For full access: GND
For write protection: Open or VDD
DATA Only
R111
TD +
R113
TD -
R112
R114
LVPECL I/F
DATA & CLK
DATAP
DATAN
SEL
TD +
R123
TD -
R124
VDD or Open
CLKP
CLKN
R111 = R113 = 130Ω
R112 = R114 = 82Ω
CLK +
R127
CLK -
R128
R121 = R123 = R125 = R127 = 130Ω
R122 = R124 = R126 = R128 = 82Ω
R121
DATAP
R122
DATAN
SEL
R125
CLKP
R126
CLKN
<MS0266-E-00>
-29-
2003/12