AK2574VB AKM [Asahi Kasei Microsystems], AK2574VB Datasheet - Page 29

• Manufacturer Part Number: AK2574VB
• Description: 156M Laser Diode Driver + APC for Burst Mode
• Manufacturer: AKM [Asahi Kasei Microsystems]

Fig-A illustrates circuit example of AK2574.
Fig-A Circuit Example
<MS0266-E-00>
Normal Operation with Open: Pull-down
Shutdown Operation with Open: Pull-up
Do not leave open
R3
VCC or GND
R6
C1
C21
R5
Pull-up or pull down
Do not leave open
C19
VDD or Open
DATA Only
C2
TD +
TD -
C11 C12
R2
R113
R114
C22
R111 = R113 = 130Ω
R112 = R114 = 82Ω
R1
R121 = R123 = R125 = R127 = 130Ω
R122 = R124 = R126 = R128 = 82Ω
R111
37
R112
C20
1
VCC or GND
IBIASC2
TEST1
DVDD
BIAS
AVDD
TXACT
IBIASR1
TESTMON
DVSS
PDIN
AVSS
PD
DATAP
LVPECL I/F
SEL
CLKP
CLKN
DATAN
R7
AK2574VB
C17
For full access: GND
For write protection: Open or VDD
C18
DATA & CLK
CLK +
Ⅶ. Circuit Example
CLK -
TD +
TD -
LD
VCC = 3.3V +/- 0.2V
R128
R127
R123
R124
R8
VDDMD
VDDDR
VSSDR
BRSTN
VSSMD
TEST2
TEST3
TEST4
TEST5
BRSTP
TEST6
-29-
R125
R126
R122
R121
LVPECL I/F
13
25
(see below)
C15
C13
Open
CLKP
DATAN
SEL
CLKN
DATAP
R132
R1 = 330Ω +/- 1%
R2 = 12kΩ +/- 1%
R3 = 82kΩ +/- 1%
R5=R6=R7 = 4.7kΩ～10kΩ
R8 = 4.7Ω～10Ω
C1=C2=0.1uF +/- 50%
C11=C13=C15=C17=C19=C21 = 0.1uF
C12=C14=C16=C18=C20=C22
R131
(under operating temperature)
C16
R131 = R133 = 130Ω
R132 = R134 = 82Ω
C14
= 0.01uF or 0.001uF
R133
R134
LVPECL I/F
2003/12