AK2574VB AKM [Asahi Kasei Microsystems], AK2574VB Datasheet - Page 15

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

– CLKN). BIAS driver is turned on within 2 clock (12.8ns max) when BRST = 1. DATA input should be 2 clock (=
12.8ns min) behind BRST = 1. Fig 2-5 illustrates the timing example.
BRST (BRSTP – BRSTN) and DATA (DATAP – DATAN) are shifted into AK2574 at the falling edge of CLK (CLKP
Table 2-2 LVPEL Interface characteristics
Note 1: This parameter is characterized and is not 100% tested.
Fig 2-2 DATA / CLK / BRST Input Level
Fig 2-3 LVPECL input circuit
Fig 2-4 Set-up & Hold Time
2.2.2
<MS0266-E-00>
Single-ended Input
Voltage Swing
Common Voltage
BIAS Voltage
Input Impedance
Set-up Time
Hold Time
(DATAP - DATAN)
CLKP/CLKN
DATAP/DATAN
BRSTP/BRTSTN
(CLKP - CLKN)
130Ω
82Ω
DATA
Input Timing (SEL=”H”, in the case of the latched DATA with CLK)
CLK
Item
Vcom
DATAP
DATAN
CLKP
CLKN
BRSTP
BRSTN
Zin
|Vamp|
Symbol
tsu
AK2574
Vcom
Vbias
Zin
tsu
th
Vamp
0.5*VDD
th
Vbias
min
0.1
1.5
1.0
10
0.6*VDD
typ
-15-
VDD – 1.0
max
1.2
Unit
kΩ
ns
ns
V
V
V
Fig 2-2
Fig 2-3
Fig 2-3
Fig 2-4
Fig 2-4
Fig 2-2
Reference
Note 1
Remarks
2003/12