Datasheet

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MAX3946
1Gbps to 11.3Gbps, SFP+ Laser Driver
with Laser Impedance Mismatch Tolerance
Typical Application Circuit for 10GBASE-LR
HOST BOARD
HOST FILTER
HOST FILTER
MODE_DEF2 (SDA)
MODE_DEF1 (SCL)
TX_DISABLE
RATE SELECT
TX_FAULT
SerDes
SUPPLY FILTER
SUPPLY FILTER
V
CC
(3.3V)
SFP CONNECTOR
V
CC
(3.3V)
0.1µF
V
CCD
R
2
R
1
R
PD
R
MON
V
EET
V
EE
V
CCR
TIN+
TOUT-
TOUT+
BIAS
BMAX
BMON
SCL
SOFTWARE
3-WIRE
INTERFACE
ADC
I
2
C
SDA
CSEL
SCL
SDA
CSEL
RPMIN
RIN+
RIN-
ROUT-
ROUT+
LOS
CAZ
3-WIRE
INTERFACE
11.3G FP/DFB
LDD
11.3G LAM
3-WIRE
INTERFACE
10G DFB-
TOSA
TIN-
FAULT
DISABLE
V
CCT
Z
DIFF
= 100I
Z
DIFF
= 100I
LOS
4.7kI TO 10kI
4.7kI TO 10kI
V
CC
V
CC
V
CC
V
CC
FR4 MICROSTRIP UP
TO 5.5in
0.1µF
0.1µF
0.1µF
0.1µF
FR4 MICROSTRIP UP
TO 12in
0.1µF
10G PIN ROSA
SFP+ OPTICAL TRANSCEIVER
MAX3946
MAX3945
DS1878
SFP CONTROLLER
0.1µF