Datasheet

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