MAX3264_3265 光纤LAN收发器的设计挑战.pdf

文档介绍：DESIGN SHOWCASE
LAN
(LAN)

3V
LAN
LAN
Maxim
LED VCSEL(
(APC )
)
1 0
LED VCSEL

VCC +
10mA 60mA
1300nm +25°C
10mA +50°C 30mA
Maxim
MAX3766 MAX3286 MAX3296
( )
CW
(780nm 850nm )
(
) APC
VCC GND APC
TO-46
Maxim
8nH
MAX3766 MAX3286† MAX3296†
300ps
VL=L∆i/∆t 30mA
VCC GND
8nH (30mA/300ps)=800mV
† MAX3264/MAX3265/MAX3286/MAX3296
11
APC TIA
APC
TIA
1mAp-p
Maxim TIA
“”
50dB 70dB
( )
(TIA) ( )
TIA
PECL
622Mbps LAN
300Mbps
-28dBm 10
3µAp-p
MAX3264† MAX3265†
TIA
µA=533kΩ(114dB)
PECL TIA † MAX3264/MAX3265/MAX3286/MAX3296
( )
( )
12