參數(shù)資料
型號(hào)： AK2574
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 156M Laser Diode Driver + APC for Burst Mode
中文描述： 1.56激光二極管驅(qū)動(dòng)器apc的突發(fā)模式
文件頁數(shù)： 15/30頁
文件大?。?/td> 248K
代理商： AK2574
ASAHI KASEI
[AK2574]
<MS0266-E-00>
-15-
2003/12
Table 2-2 LVPEL Interface characteristics
Item
Single-ended Input
Voltage Swing
Common Voltage
BIAS Voltage
Input Impedance
Set-up Time
Hod Time
Note 1: This parameter is characterized and is not 100% tested.
Symbol
|Vamp|
min
0.1
typ
max
1.2
Unit
V
Reference
Fig 2-2
Remarks
Vcom
Vbias
Zin
tsu
th
0.5*VDD
10
1.5
1.0
VDD – 1.0
V
V
k
Ω
ns
ns
Fig 2-2
Fig 2-3
Fig 2-3
Fig 2-4
Fig 2-4
Note 1
0.6*VDD
Fig 2-2 DATA /CLK /BRST Input Level
Vcom
Vamp
CLKP/CLKN
DATAP/DATAN
BRSTP/BRTSTN
Fig 2-3 LVPECL input circuit
DATAP
DATAN
CLKP
CLKN
BRSTP
BRSTN
AK2574
Zin
Vbias
82
Ω
130
Ω
Fig 2-4 Set-up & Hold Time
DATA
(DATAP - DATAN)
CLK
(CLK P - CLK N)
tsu
th
2.2.2
BRST (BRSTP – BRSTN) and DATA (DATAP – DATAN) are shifted into AK2574 at the falling edge of CLK (CLKP
– 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.
Input Timing (SEL=”H”, in the case of the latched DATA with CLK)
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