AK2574VB AKM [Asahi Kasei Microsystems], AK2574VB Datasheet - Page 9

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

7. BRST Timing (SEL=”H”, with CLK)
Note 1: This parameter is characterized and is not 100% tested.
Note 2: Depends on TXACT detection level, Monitor PD current, etc. For more information, see “VI. 3.1 TXACT”.
8. I-DAC1
Shutdown
<MS0266-E-00>
Resolution
Current Supply with
Output Current with
Full Code
1 LSB Current Step
DNL
DATA Set-up Time
DATA Hold Time
BRST Set-up Time
BRST Hold Time
Delay Time of BRST “L” → “H”
to First DATA
Delay Time of Last DATA
to IBIAS OFF
Delay Time of BRST “H”→”L”
to TXACT OFF
IBIAS Overshoot
IBIAS Error before 2ns
of First DATA
Delay Time of First DATA
to TXACT Detection
BRSTP - BRSTN
CLKP- CLKN
DATAP - DATAN
IBIAS Current
IMOD Current
TXACT
Item
Item
Tsu-b
rib1
Tdr-bd
IMOD = VDD – 1.8V
IMOD = VDD – 1.8V
IMOD = VDD – 1.8V
IMOD = VDD
Condition
Symbol
Tdr-bd
Tdr-dt
Tsu
Tdf-di
Tdf-bt
Tsu-b
Th-b
Tsu
rib1
rib2
Th
Th
2ns
R_DAC2=FFh
R_DAC2=0Fh
R_DAC2=0Fh
R_DAC2=2Fh
R_DAC2=0Fh
R_DAC2=0Fh
Last Data=1
Conditions
rib2
min
Tdr-dt
76
-1
100% Nominal
-9-
0.333
typ
85
12.8
min
8
1.5
1.0
1.5
1.0
Note 2
max
12.86
100
120
108
94
+1
typ
98
Unit Remark
LSB Code 20h to FFh
+/- 15
mA
mA
max
uA
bit
150
16
2
Th-b
TXDIS = “1”
Unit
ns
ns
ns
%
%
%
%
Tdf-bt
Note 1
Note 1
Note 1
Tdf-di
Remarks
2003/12