The FNK-LT12 singlemode optical fiber transceivers provide low profile,
cost effective solutions for Gigabit Ethernet and 1x Fiber Channel
optical fiber data links with a duplex LC connector interface. These
transceivers are fully compliant with the IEEE Gigabit Ethernet and
ANSI 1x Fiber Channel standards but can be used for any other data
communications purpose within their operating parameters.
This transceiver consist of transmitter and receiver functions combined
in a Low Profile RJ module. The optical transmitter is a high output 1310
nm FP laser. The transmitter input lines are driven with differential
LVPECL signals applied to the Transmit (TX+ and TX-) pins. These
signals are internally converted to a suitable modulation current by a
CMOS integrated circuit. The optical transmitter can be disabled by
applying an LVTTL signal to the Transmit Disable (TDIS) pin.
The optical receivers consist of PIN and Preamplifier assemblies and
CMOS limiting post-amplifier integrated circuits. Outputs from the
receivers consist of differential CML data signals on the Receive (RX+
and RX-) pins and a single ended LVTTL loss of signal function on Loss
of Signal (LOS) pin. The RX data is squelched (JAM) upon LOS Assert
to prevent garbage data output when no optical signal is present
Key Features & Benefits
Gigabit Ethernet and 1x FC Applications, up to 10 km
3.3 V, 1310 nm, FP, Singlemode
Front load pluggable miniature transceiver
MSA height, but half the footprint
MSA compliant Digital Diagnostics
Surface Mount I/O pins for high speed signal integrity
Industrial Temp Range, Vibration tolerant design
Individual (separate) +3.3 V power supply per port
Industry standard duplex multimode LC receptacle
Full compliance to IEEE and ANSI requirements
EN-60825 / IEC-825 / CDRH Class 1 Compliant
2
FNK-LT12x
ORDERING INFORMATION
F
F = Front Load
Low Rider
N
N = No GND tabs
K
K = Gigabit Ethernet
1x Fibre Channel
-LT12
LT12 = SM
1310 nm
H
H = No conf coat
M = Conf coat
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Storage Temperature
Lead Hand Soldering Temperature
1
Lead Soldering Time
1
Supply Voltage
Data Input Voltage
Differential Input Voltage (p-p)
Output Current
1
SYMBOL
T
S
T
SOLD
t
SOLD
V
CC
V
I
V
D
I
O
MIN
-55
TYPICAL
MAX
+100
+260
10
UNIT
°C
°C
Second
V
V
V
mA
-0.5
-0.5
+4.5
V
CC
2.0
50
The Front Load Pluggable Optical Transceiver is not soldered, rather it is the Cage and Connector that are soldered to the application card. Therefore,
these Solder specifications apply only for the Cage and Connector
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Operating Temperature Limit
Supply Voltage
Tx Common Mode Voltage
Tx Differential Input Voltage (p-p)
Rx Data Output Load
SYMBOL
T
A
V
CC
V
CM
V
D
R
L
MIN
-40
+3.135
TYPICAL
MAX
+85
+3.465
UNIT
°C
V
V
2.0
0.35
50
1.25
V
W
TRANSMITTER
PARAMETER
2
Optical Output Power
1
Optical Output Wavelength
Spectral Width (RMS)
Extinction Ratio
Supply Current
Optical Rise/Fall Time (20% - 80%)
Relative Intensity Noise
Total Jitter
Transmit Disable Voltage
Transmit Enable Voltage
1
2
-12
7
SYMBOL
P
O
λ
OUT
∆λ
RMS
ER
I
CC
t
R,F
RIN
T
j
V
D
V
EN
MIN
-9.5
1285
TYPICAL
MAX
-3.0
UNIT
dBm
nm
nm
dB
1310
1343
4
9
120
160
0.26
-116
153
2.0
V
EE
V
CC
0.8
mA
ns
dB/Hz
ps
V
V
BER = 10 @ 1.25 Gbps, PRBS 2 -1, NRZ, Compliant with IEEE-802.3z and ANSI X3.297 / FC-PH-2
V
CC
Tx = 3.15 – 3.45 V, T
A
= Operating temperature range
+1 321 308 4100
cinch.com
FNK-LT12x
RECEIVER
PARAMETER
Optical Sensitivity
1
Optical Input Wavelength
Optical Return Loss
Supply Current
Loss of Signal Assert Time
Loss of Signal Deassert Time
Loss of Signal Deassert Level
2
Loss of Signal Assert Level
Loss of Signal Hysteresis
RX Data Output – Low
RX Data Output – High
1
2
-12
3
SYMBOL
P
I
λ
IN
ORL
I
CC
T
LOSAS
T
LOSDS
LOS
OFF
LOS
ON
HYS
V
OL
-V
CC
V
OH
-V
CC
MIN
-20.0
1270
12
TYPICAL
MAX
0.0
1355
UNIT
dBm
nm
dB
70
<10
<10
-30
120
100
350
mA
µs
µs
dBm
-20
1.5
-1.810
-1.165
2.25
3.5
-1.475
-0.880
dBm
dB
V
V
BER = 10 @ 1.25 Gbps, PRBS 27-1, NRZ, Compliant with IEEE-802.3z and ANSI X3.297 / FC-PH-2
Rx Data output are squelched when Loss of Signal is asserted to prevent garbage data output when no optical signal is present
CONFORMAL COATING OPTION
PARAMETER
Specification
Coating
Deposition
Film Thickness
VALUE
MIL-I-46058C, Type XY
Parylene type C
Vacuum deposited
1 MIL +/- 0.0002”
REGULATORY COMPLIANCE
REQUIREMENT
MIL-STD-883-3015.7
IEC-801-2
IEC-801-3
FCC
EN 55022 (CISPR 22A)
IEC-825 issue 1993-11
FDA CDRH 21-CFR 1040
FEATURE
ESD
ESD
EMI
EMI
EMI
Eye Safety
Eye Safety
CONDITION
Class II
Human Body Model
Immunity
Class B
Class B
Class 1
Class 1
NOTES
2200 V
25 kV
10 V/m
>20 dB
10 V/m
TUV Certificate Number on File
CDRH Accession Number on File
4
FNK-LT12x
MECHANICAL DETAILS – FRONT LOADER
All dimensions in inches.
All dimensions +- 0.005”, unless noted
Screw torque 0.50 +/- 0.10 in-lbs
MECHANICAL DETAILS – FRONT LOADER CAGE
All dimensions in inches.
All dimensions +- 0.005”, unless noted
Screw torque 0.50 +/- 0.10 in-lbs
+1 321 308 4100
cinch.com
Mouser Electronics
Authorized Distributor
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