ak2573a AKM Semiconductor, Inc., ak2573a Datasheet - Page 13

• Manufacturer Part Number: ak2573a
• Description: 125m / 156m Laser Diode Driver Apc - Asahi Kasei Microsystems
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
3.1 LVPECL Input (DATAP / DATAN / CLKP / CLKN)
Table 3-2 shows LVPECL input characteristics. The AK2573A LV PECL input, which is biased to 0.6 * VDD with
10k! or more inpedance respectively, supports both AC and DC coupling. Fig 3-2 illustrates LVPECL input with AC
coupling and Fig3-3 illustrates with DC coupling respectively.
Table 3-2 LVPEL Interface characteristics
Note 1: This parameter is characterized and is not 100% tested.
Fig 3-1 DATA / CLK Input Level
Fig 3-2 LV PECL input with AC coupling
Fig 3-4 Set-up & Hold Time
<MS0189-E-01>
Swing
Single-ended Input Voltage
Common Voltage
BIAS Voltage
Input Impedance
Set-up Time
Hold Time
CLKP/CLKN
DATAP/DATAN
(CLKP - CLKN)
(DATAP -
0.01uF or more
0.01uF or more
DATAN)
DATA
CLK
Vcom
Item
100
Zin
Zin
DATAN
CLKN
DATAP
CLKP
tsu
| Vamp|
Symbol
Vcom
Vbias
Zin
tsu
Vamp
th
AK2573A
th
0.5*VDD
Vbias
min
0.1
1.5
1.5
10
Vbias
0.6*VDD
-13-
typ
Fig3-3 LVPECL input with DC coupling
130
82
VDD – 1.0
max
1.2
DATAP
DATAN
CLKP
CLKN
Zin
Unit
k!
ns
ns
V
V
V
AK2573A
see Fig 3-2 and 3-3
see Fig 3-4
Note 1
see Fig 3-1
Remarks
[AK2573A]
Vbias
2004/5