FTLX1371 PRELIMINARY Datacom SFP+ Product Specification – July 2008
IV.
Electrical Characteristics
(T
OP
= -5 to 70
°C,
V
CC
= 3.14 to 3.46 Volts)
Parameter
Symbol
Vcc
Icc
P
R
in
Vin,pp
V
D
V
EN
ΔZ
M
Supply Voltage
Supply Current
Power Dissipation
Transmitter
Input differential impedance
Single ended data input swing
Transmit Disable Voltage
Transmit Enable Voltage
Receiver
Termination Mismatch at 1 MHz
Single Ended Output Voltage Tolerance
Output AC Common Mode Voltage
Output Rise and Fall time (20% to 80%)
Relative Noise LRM Links with crosstalk
Min
3.14
Typ
200
Max
3.46
300
1.0
Unit
V
mA
W
Ω
mV
V
V
%
V
mV
RMS
Ps
dB/Hz
Ref.
100
90
2
Vee
350
Vcc
Vee+ 0.8
5
4.0
7.5
2
3
4
-0.3
Tr, Tf
dRNx
30
TBD
equation
per SFF-8431
180
2
Vee
600
Vcc
HOST
Vee+0.8
per SFF-8431
5
6
Difference Waveform Distortion Penalty
Differential Voltage Modulation Amplitude
LOS Fault
LOS Normal
Power Supply Noise Tolerance
dWDP
VMA
V
LOS fault
V
LOS norm
VccT/VccR
dB
mV
V
V
mVpp
7
8
8
9
Notes:
1. Non-condensing.
2. Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
3. Per SFF-8431 Rev 3.0
4. Into 100 ohms differential termination.
5. Measured with Module Compliance Test Board and OMA test pattern.
6. Crosstalk source rise/fall time (20%-80%) is 35 ps.
7. Defined with reference receiver with 14 T/2 spaced FFE taps and 5 T spaced DFE taps.
8. LOS is an open collector output. Should be pulled up with 4.7k – 10kΩ on the host board. Normal operation
is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.
9. As described in Section 2.8.1, SFF-8431 Rev 3.0.
©
Finisar Corporation - July 25, 2008 DRAFT Rev. A3
Page 5
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