ZARLINK ZL60114MLDA

ZL60113/4
12 x 3.125 Gbps Parallel Fiber Optic Link
Transmitter and Receiver
Data Sheet
May 2007
Ordering Information
ZL60113MLDA Parallel Fiber Transmitter
ZL60114MLDA Parallel Fiber Receiver
ZL6011xMMDA Parallel Fiber Module with
EMI gasket
0°C to +80°C
Features
•
•
•
•
•
•
•
•
•
•
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Description
12 parallel channels, total 37.5 Gbps capacity
Data rate up to 3.125 Gbps per channel
850 nm VCSEL array
Link reach 200 m with 50/125 µm 500 MHz.km
fiber at 3.125 Gbps
Channel BER better than 10-12
Industry standard MPO/MTP ribbon fiber
connector interface
Pluggable MegArray® ball grid array connector
Optionally available with EMI shield
Laser class 1M IEC 60825-1:2001 compliant
Power supply 3.3 V
Compatible with industry MSA
The ZL60113 and ZL60114 together make a high speed
transmitter/receiver pair for parallel fiber applications.
The ZL60113 transmitter module converts parallel
electrical input signals via a laser driver and a VCSEL
array into parallel optical output signals at a wavelength
of 850 nm.
The ZL60114 receiver module converts parallel optical
input signals via a PIN photodiode array and a
transimpedance and limiting amplifier into electrical
output signals.
The modules are pluggable each fitted with an industrystandard MegArray® BGA connector. This provides
ease of assembly on the host board and enables
provisioning of bandwidth on demand.
Applications
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•
•
•
High-speed interconnects within and between
switches, routers and transport equipment
Low cost SONET/SDH VSR (Very Short Reach)
OC-192/STM64 connections
InfiniBand® connections
General high-bandwidth density interconnections
Reliability assurance is based on Telcordia GR-468CORE and the parts are compliant to the EU directive
2002/95/EC issued 27 January 2003 [RoHS].
Exemption 6 & 7
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2007, Zarlink Semiconductor Inc. All Rights Reserved.
ZL60113/4
Data Sheet
Table of Contents
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ZL60113 Transmitter Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Transmitter Control and Status Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Transmitter Control and Status Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Transmitter Pinout Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Transmitter Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ZL60114 Receiver Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Receiver Control and Status Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Receiver Control and Status Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Receiver Pinout Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Receiver Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Handling instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cleaning the Optical Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
ESD Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Link Reach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Link Model Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
Absolute Maximum Ratings
Not necessarily applied together. Exceeding these values may cause permanent damage. Functional operation
under these conditions is not implied.
Parameter
Symbol
Min.
Max.
Unit
VCC
-0.5
3.6
V
2.4
V
Supply voltage
Differential input voltage amplitude
1
∆V
Voltage on any pin
VPIN
-0.3
VCC + 0.3
V
Relative humidity (non-condensing)
MOS
5
95
%
Storage temperature
TSTG
-40
100
°C
ESD resistance
VESD
±500
V
1. Differential input voltage amplitude are peak to peak values.
Recommended Operating Conditions
These parameters apply both to the transmitter and the receiver.
Parameter
Symbol
Min.
Max.
Unit
VCC
3.135
3.465
V
Operating case temperature
TCASE
0
80
°C
Signaling rate (per channel)1
fD
1.0
3.125
Gbps
LD
2
m
CBLK
100
nF
Power supply voltage
Link distance2
Data I/O DC blocking capacitors
3
Power supply noise4
VNPS
200
mVp-p
1. Data patterns are to have maximum run lengths and DC balance shifts no worse than that of a Pseudo Random Bit Sequence of
length 223-1 (PRBS-23). Information on lower bit rates is available on request.
2. For maximum distance, see Table 6.
3. For AC-coupling, DC blocking capacitors external to the module with a minimum value of 100 nF is recommended.
4. Power supply noise is defined at the supply side of the recommended filter for all VCC supplies over the frequency range of 500 Hz
to 3125 MHz with the recommended power supply filter in place.
HOST Vcc
1 µH
Module Vcc
10 µF
0.1 µF
Figure 1 - Recommended Power Supply Filter
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
ZL60113 Transmitter Specifications
All parameters below require operating conditions according to “Recommended Operating Conditions” on page 3.
Parameter
Symbol
Min.
Max.
Unit
Optical Parameters
Launch power (50/125 µm MMF)1
POUT
-2
dBm
Extinguished output power
POFF
-30
dBm
Extinction ratio
Optical modulation amplitude2
ER
6
dB
OMA
0.190
mW
λC
830
860
nm
∆λ
0.85
nmrms
RIN12OMA
-120
dB/Hz
tRO
120
ps
tFO
120
ps
TJ
0.32
UI
Deterministic jitter contributed (peak to peak)
DJ
0.14
UI
Channel to channel skew6
tSK
100
ps
PD
1.5
W
ICC
450
mA
Center wavelength
3
Relative intensity noise OMA
Spectral width
Optical output rise time (20 - 80%)
Optical output fall time (20 - 80%)
4
Total jitter contributed (peak to peak)
5
Electrical Parameters
Power dissipation
Supply current
7
∆VIN
200
1800
mVp-p
Differential input impedance8
ZIN
80
120
Ω
Electrical input rise time (20 - 80%)
tRE
150
ps
Electrical input fall time (20 - 80%)
tFE
150
ps
Differential input voltage amplitude (peak to peak)
1. The output optical power is compliant with IEC 60825-1 Amendment 2, Class 1M Accessible Emission Limits.
2. OMA are peak to peak values.
3. Spectral width is measured as defined in EIA/TIA-455-127 Spectral Characterization of Multimode Laser Diodes.
4. Total jitter is TP2 - TP1 as defined in IEEE 802.3 clause 38.6 (Gigabit Ethernet).
5. Deterministic jitter is informative. The random jitter and deterministic jitter together should be no higher than total jitter.
6. Channel skew is defined for the condition of equal amplitude, zero ps skew signals applied to the transmitter inputs.
7. Differential input voltage is defined as the peak to peak value of the differential voltage between DIN+ and DIN-. Data inputs are
CML compatible.
8. Differential input impedance is measured between DIN+ and DIN-.
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
Classified in accordance with IEC 60825-1/A2:2001, IEC 60825-2: 2000
Class 1 M Laser Product
Emitted wavelength: 840 nm
1
2
3
4
5
6
7
8
9
10
11
12
DIN1+
DIN1-
VCSEL
Driver
VCSEL
Array
DIN12+
DIN12-
VCSEL Driver Controller
VCC VEE
RESET
Tx_DIS
Tx_EN
FAULT
Figure 2 - ZL60113 Transmitter Block Diagram
Front view - MTP key up
Ch12
Ch11
Ch10
Ch9
Ch8
Ch7
Ch6
Ch5
Ch4
Host circuit board
Table 1 - Transmitter Optical Channel Assignment
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Zarlink Semiconductor Inc.
Ch3
Ch2
Ch1
ZL60113/4
Data Sheet
Transmitter Control and Status Signals
The following table shows the timing relationships of the status and control signals of the pluggable optical
transmitter.
Parameter
Symbol
Min.
Control input voltage high1
VIH
0.6VCC
Control input voltage low
VIL
Control pull-up resistor2
Typ.
Max.
Unit
V
0.2VCC
V
RPU
10
kΩ
3
RPD1
10
kΩ
4, 5
Status output voltage low
VOL
Status pull-down resistor4
RPD2
Control pull-down resistor
0.4
10
V
kΩ
FAULT assert time
TFA
100
µs
FAULT lasers off
TFD
100
µs
RESET duration
TTDD
RESET assert time
TOFF
RESET de-assert time
µs
10
10
µs
TON
100
ms
Tx_EN assert time
TTEN
1
ms
Tx_EN de-assert time
TTD
5
10
µs
Tx_DIS assert time
TTD
5
10
µs
Tx_DIS de-assert time
TTEN
1
ms
1. Applies to control signals RESET, Tx_DIS and Tx_EN.
2. Applies to control signals RESET and Tx_EN. Internal pull-up resistor.
3. Applies to control signal Tx_DIS. Internal pull-down resistor.
4. Applies to status signal FAULT. Internal pull-down to VEE.
5. With status output sink current max. 2 mA.
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Zarlink Semiconductor Inc.
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ZL60113/4
Data Sheet
Transmitter Control and Status Timing Diagrams
The following figures show the timing relationships of the status and control signals of the pluggable optical
transmitter.
VCC
TTEN
Tx Output [1:12]
Transmitter Not Ready
Normal Operation
RESET: floating or high
Figure 3 - Transmitter Power-up Sequence
FAULT
TFA
TFD
Data [1:12]
Tx Output [1:12]
No Fault
Fault
Figure 4 - Transmitter Fault Signal Timing Diagram
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
RESET
FAULT
TTDD
TON
Data [1:12]
Data [0:11]
Tx Output [1:12]
Tx Output [0:11]
Transmitter Not Ready
Normal operation
Figure 5 - Transmitter Reset Signal Timing Diagram
Tx_DIS
Tx_EN
TTD
Data
Data [1:12]
[0:11]
Normal operation
TTD
Lasers
off
Data [1:12]
[0:11]
Data
Tx Off
Normal operation
Lasers
off
Tx Off
Tx_EN
TTEN
Data[0:11]
[1:12]
Data
Transmitter Not Ready
Normal operation
Figure 6 - Transmitter Enable and Disable Timing Diagram
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
Tx_DIS High
Tx_DIS Low
Tx_EN High
Transmitter disabled
Normal operation
Tx_EN Low
Transmitter disabled
Transmitter disabled
Table 2 - Truth Table for Transmitter Operation (Pre-condition: RESET floating or HIGH)
Transmitter Pinout Assignments
K
J
H
G
F
E
D
C
B
A
1
NIC
NIC
NIC
VEE
VEE
VEE
VEE
VEE
VEE
NIC
2
NIC
NIC
NIC
VEE
VEE
DIN6+
VEE
VEE
DIN9+
VEE
3
NIC
VCC
VCC
VEE
DIN5+
DIN6-
VEE
DIN8+
DIN9-
VEE
4
NIC
VCC
VCC
DIN4+
DIN5-
VEE
DIN7+
DIN8-
VEE
NIC
5
NIC
VCC
VCC
DIN4-
VEE
DIN3+
DIN7-
VEE
DIN10-
VEE
6
NIC
VCC
VCC
VEE
DIN2+
DIN3-
VEE
DIN11-
DIN10+
VEE
7
NIC
NIC
NIC
DIN1+
DIN2-
VEE
DIN12-
DIN11+
VEE
NIC
8
NIC
RESET
FAULT
DIN1-
VEE
VEE
DIN12+
VEE
VEE
NIC
9
NIC
Tx_EN
Tx_DIS
VEE
VEE
VEE
VEE
VEE
VEE
NIC
10
NIC
NIC
NIC
NIC
NIC
NIC
DNC
DNC
DNC
DNC
Table 3 - Transmitter Host Circuit Board Layout (Top view, toward MPO/MTP connector end)
(10x10 array, 1.27 mm pitch)
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
Transmitter Pin Description
Signal Name
Type
Description
Comments
DIN[1:12] +/-
Data input
Transmitter data in, channel 1 to 12
Internal differential termination at 100 Ω.
VCC
Transmitter power supply rail
VEE
Transmitter signal common. All
transmitter voltages are referenced
to this potential unless otherwise
stated.
Directly connect these pads to the PC
board transmitter signal ground plane.
Tx_EN
Control
input
Transmitter enable.
HIGH: normal operation
LOW: disable transmitter
Active high, internal pull-up. See
Table 2.
Tx_DIS
Control
input
Transmitter disable.
HIGH: disable transmitter
LOW: normal operation
Active high, internal pull-down. See
Table 2.
FAULT
Status
output
Transmitter fault.
HIGH: normal operation
LOW: laser fault detected on at least
one channel
When active, all channels are disabled.
Clear by reset signal. Internal pull-up.
RESET
Control
input
Transmitter reset.
HIGH: normal operation
LOW:reset to clear fault signal
Internal pull-up.
DNC
Do not connect to any potential,
including ground.
NIC
No internal connection.
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
ZL60114 Receiver Specifications
All parameters below require operating conditions according to “Recommended Operating Conditions,” on page 3
and a termination load of 100 Ω differential at the electrical output.
Parameter
Symbol
Min.
Max.
Unit
SOMA
38
755
µW
λC
830
860
nm
RL
12
dB
SSOMA
80
µW
Optical Parameters
Receiver sensitivity (OMA) (50/125 µm MMF)1
Center wavelength
2
Return loss
3
Stressed receiver sensitivity (OMA)
Total link jitter contribution (peak to peak)4
TJL
0.65
UI
Deterministic link jitter contribution (peak to peak)
DJL
0.27
UI
Channel to channel skew6
tSK
100
ps
Signal detect assert
PSA
-15
dBm
Signal detect de-assert
PSD
5
-30
dBm
Electrical Parameters
Power dissipation
Supply current
7
PD
1.5
W
ICC
450
mA
∆VOUT
500
800
mVp-p
Output differential load impedance
ZL
80
120
Ω
Electrical output rise time (20 - 80%)
tRE
120
ps
Electrical output fall time (20 - 80%)
tFE
120
ps
Differential output voltage amplitude (peak to peak)
1. Optical modulation amplitude are peak to peak values. Receiver sensitivity is measured using a source that does not degrade the
sensitivity measurement, i.e. ideal source with fast rise/fall time and low RIN. Receive power for a channel is measured for a BER of
10-12 and 6 dB extinction ratio and the other 11 channels operating with incident power of 6 dB above the channel under test.
2. Return loss is measured as defined in TIA/EIA-455-107A Determination of Component Reflectance or Link/System Return Loss Using a Loss Test Set.
3. Based on Gigabit Ethernet Link model. See “Link Model Parameters,” on page 17 and receiver sensitivity specified.
4. Total link jitter equals TP4 - TP1.
5. Deterministic jitter is informative. Deterministic link jitter equals TP4 - TP1.
6. Channel skew is defined for the condition of equal amplitude, zero ps skew signals applied to the receiver inputs.
7. Differential output voltage is defined as the peak to peak value of the differential voltage between DOUT+ and DOUT- and measured
with a 100 Ω differential load connected between DOUT+ and DOUT-. Data outputs are CML compatible.
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Zarlink Semiconductor Inc.
ZL60113/4
1
2
3
4
5
7
6
8
9
10
11
12
Data Sheet
DOUT1+
DOUT1-
TarnsImpedance
and
Limiting
Amplifier
PIN
Array
DOUT12+
DOUT12-
VCC
Rx_EN Rx_SD Rx_SD1 Rx_SD12 SQ_EN
VEE
Figure 7 - ZL60114 Receiver Block Diagram
Front view - MTP key up
Ch12
Ch11
Ch10
Ch9
Ch8
Ch7
Ch6
Ch5
Ch4
Ch3
Ch2
Ch1
Host circuit board
Table 4 - Receiver Optical Channel Assignment
Receiver Control and Status Signals
The following table shows the timing relationships of the status and control signals of the pluggable optical receiver.
Parameter
Control input voltage high1
Control input voltage low1
Symbol
Min.
VIH
0.6VCC
Typ.
IIN
Control input pull-up current
Status output voltage low2, 3
10
VOL
2
Unit
V
VIL
1
Max.
0.2VCC
V
100
µA
0.4
V
RPU
3.25
Receiver signal detect assert time
TSD
50
200
µs
Receiver signal detect de-assert time
TLOS
50
200
µs
Receiver enable assert time
TRXEN
33
ms
Receiver enable de-assert time
TRXD
5
µs
Status output pull-up resistor
1. Applies to control signals Rx_EN, SQ_EN.
2. Applies to status signal Rx_SD. Internal pull-up to VCC.
3. With status output sink current max 2 mA.
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Zarlink Semiconductor Inc.
kΩ
ZL60113/4
Data Sheet
Receiver Control and Status Timing Diagrams
The following figures show the timing relationships of the status and control signals of the pluggable optical
receiver.
Rx_EN
TRXD
ICC
Normal Operation
Rx Off
Figure 8 - Receiver Enable Signal Timing Diagram
Rx_SD
TLOS
Signal
No Signal
Figure 9 - Receiver Signal Detect Timing Diagram
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
Receiver Pinout Assignments
K
J
H
G
F
E
D
C
B
A
1
DNC
NIC
NIC
VEE
VEE
VEE
VEE
VEE
VEE
NIC
2
DNC
NIC
NIC
VEE
VEE
DOUT6-
VEE
VEE
DOUT9-
VEE
3
NIC
VCC
VCC
VEE
DOUT5-
DOUT6+
VEE
DOUT8-
DOUT9+
VEE
4
NIC
VCC
VCC
DOUT4-
DOUT5+
VEE
DOUT7-
DOUT8+
VEE
NIC
5
NIC
VCC
VCC
DOUT4+
VEE
DOUT3-
DOUT7+
VEE
DOUT10+
VEE
6
NIC
VCC
VCC
VEE
DOUT2-
DOUT3+
VEE
DOUT11+
DOUT10-
VEE
7
NIC
NIC
Rx_SD
DOUT1-
DOUT2+
VEE
DOUT12+
DOUT11-
VEE
NIC
8
DNC
RX_SD12
Rx_SD1
DOUT1+
VEE
VEE
DOUT12-
VEE
VEE
NIC
9
DNC
Rx_EN
NIC
VEE
VEE
VEE
VEE
VEE
VEE
NIC
10
SQ_EN
NIC
NIC
NIC
NIC
NIC
DNC
DNC
DNC
DNC
Table 5 - Receiver Pinout Assignments (Top view, toward MPO/MTP connector end)
(10x10 array, 1.27 mm pitch)
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
Receiver Pin Description
Signal Name
Type
DOUT[1:12] +/-
Data
output
Description
Comments
Receiver data out, channel 1 to 12.
VCC
Receiver power supply rail.
VEE
Receiver signal common. All receiver voltages
are referenced to this potential unless
otherwise stated.
Directly connect these pads to
the PC board receiver signal
ground plane.
Internal pull-up.
Rx_EN
Control
input
Receiver enable.
HIGH: normal operation
LOW: disable receiver
Rx_SD
Status
output
Receiver signal detect.
HIGH: valid optical input on all channels
LOW: loss of signal on at least one channel
Rx_SD1
Status
output
Receiver signal detect channel 1.
HIGH: valid optical input on channel 1
LOW: loss of signal on channel 1
RX_SD12
Status
output
Receiver signal detect channel 12.
HIGH: loss of signal on channel 12
LOW: valid optical input on channel 12
SQ_EN
Control
input
Squelch enable.
HIGH: squelch function enabled. Data OUT is
squelched on any channels that have loss of
signal
LOW: squelch function disabled
DNC
Do not connect to any potential, including
ground.
NIC
No internal connection.
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Zarlink Semiconductor Inc.
Internal pull-up.
ZL60113/4
Data Sheet
Handling Instructions
Cleaning the Optical Interface
A protective connector plug is supplied with each module. This plug should remain in place whenever a fiber cable
is not inserted. This will keep the optical port free from dust or other contaminants, which may potentially degrade
the optical signal. Before reattaching the connector plug to the module, visually inspect the plug and remove any
contamination. If the module’s optical port becomes contaminated, it can be cleaned with high-pressure nitrogen
(the use of fluids, or physical contact, is not advised due to potential for damage).
Before a fiber cable connector is attached to the module, it is recommended to clean the fiber cable connector
using an optical connector cleaner, or according to the cable manufacturer's instructions. It is also recommended to
clean the optical port of the module with high-pressure nitrogen.
Connectors
For optimum performance, it is recommended that the number of insertions is limited to 50 for the electrical
MegArray connector and 200 for the optical MPO/MTP connector.
ESD Handling
When handling the modules, precautions for ESD sensitive devices should be taken. These include use of ESD
protected work areas with wrist straps, controlled work-benches, floors etc.
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Zarlink Semiconductor Inc.
ZL60113/4
Data Sheet
Link Reach
The following table lists the minimum reach distance of the 12 channel pluggable optical modules for different multimode fiber (MMF) types and bandwidths assuming worst case parameters. Each case allows for a maximum of
2 dB per channel connection loss for patch cables and other connectors.
Fiber Type
Modal Bandwidth
@ 850 nm
[MHz*km]
Reach Distance
@ 1 Gbps
[m]
Reach Distance
@ 2.5 Gbps
[m]
Reach Distance
@ 3.125 Gbps
[m]
50/125 MMF
400
650
260
170
50/125 MMF
500
750
300
200
[core / cladding µm]
Table 6 - Link Reach for Different Fiber Types and Data Rates
Significantly longer operating distance than the range specified here can be achieved using transmitters, receivers
and / or cables meeting specification but performing better than worst case.
Link Model Parameters
The link reaches above have been calculated using the following link model parameters and Gigabit Ethernet link
model version 2.3.5 (filename: 5pmd047.xls).
Parameter
Symbol
Value
k
0.3
Modal noise
MN
0.3
dB
Dispersion slope parameter
SO
0.11
ps/nm2*km
Wavelength of zero dispersion
UO
1320
nm
Attenuation coefficient at 850 nm
αdB
3.5
dB/km
Conversion factor
C1
480
ns.MHz
Q
7.04
Mode partition noise k-factor
Q-factor [BER 10
-12
]
TP4 eye opening
Unit
0.3
UI
DCD DJ
0.08
UI
RMS baseline wander S.D.
σBLW
0.025
RIN coefficient
kRIN
0.70
Conversion factor
c_rx
329
DCD allocation at TP3
Trademarks
Infiniband is a registered trademark of the InfiniBand Trade Association.
MTP is a registered trademark of US Conec Ltd.
The MegArray is a registered trademark of FCI.
17
Zarlink Semiconductor Inc.
ns.MHz
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