RoHS Compliant SFP Transceiver for ATM, SONET OC-3/SDH STM-1
with Digital Diagnostic Monitoring Function
FEATURES
Compliant with SFP transceiver SFF-8472
MSA specification with internal calibration
LCP-155A4HDR compliant with Intra-office
SONET OC-3/ SDH STM-1 (I-1)
Multirate operation from 100Mb/s to 155Mb/s
Single + 3.3V power supply and TTL logic
interface
EEPROM with Serial ID functionality
Laser Class 1 product which comply with the
requirements of IEC 60825-1 and IEC 60825-2
Duplex LC connector interface
Description
The LCP-155 series is a hot pluggable 3.3V
Small-Form-Factor transceiver module designed
expressly
for
high-speed
communication
applications that require rates of up to
155Mbit/sec. It is compliant with the ATM, SONET
OC-3/SDH STM-1 standards, as well as the
SFF-8472 SFP Multisource Agreement (MSA).
The LCP-155 series are designed to be
compliant with SFF-8472 SFP Multi-source
Agreement (MSA) with digital diagnostic
monitoring functions: Temperature, V
CC
, TX
optical power, TX laser bias current, and RX
received optical power.
The post-amplifier of the LCP-155 series also
includes a Loss of Signal (LOS) circuit that
provides a TTL logic-high output when the
received optical level is below a preset LOS
Assert threshold.
Applications
SONET OC-3/SDH STM-1
ATM Network
Fast Ethernet
Switch to Switch interface
Switched backplane applications
File server interface
Performance
LCP-155A4HDR Data Link up to 2km in
62.5/125µm in Multi-Mode Fiber
LCP-155B4JDR Data Link up to 15km in
9/125µm Single Mode Fiber
1
DELTA ELECTRONICS, INC.
3/20/2009
Rev. 0A
www.deltaww.com
Absolute Maximum Ratings
Parameter
Storage Temperature
Supply Voltage
Symbol
Ts
V
CC
Min.
-40
0
Typ.
Max.
85
5
Unit
ºC
V
Note
Recommended Operating Conditions
Parameter
Case Operating Temperature
Supply Voltage
Note 1: See order information
Symbol
T
c
V
CC
Min.
-5
3.135
Typ.
Max.
70
3.465
Unit
ºC
V
Note
1
Electrical Characteristics
(V
CC
=3.3V
±
5%)
Parameter
Symbol
Min.
Typ.
Max.
Total Supply Current
I
CCT
300
Transmitter
Transmitter Differential Input Voltage
V
DT
0.5
2.4
Transmitter Disable Input-High
V
DISH
2
V
CC
+0.3
Transmitter Disable Input-Low
V
DISL
0
0.8
Transmitter Fault Pull up Resistor
R
TX_FAULT
4.7
10
Transmitter Fault Output-High
V
TXFH
2
V
CC
+0.3
Transmitter Fault Output-Low
V
TXFL
0
0.8
Receiver
Receiver Differential Output Voltage
V
DR
0.35
2
Receiver LOS Load
R
RXLOS
4.7
10
LOS Output Voltage-High
V
LOSH
2
V
CC
+0.3
LOS Output Voltage-Low
V
LOSL
0
0.8
Output Data Rise/Fall Time
t
r
/ t
f
2.5
Notes:
1. Internally AC coupled and terminated to 100Ohm differential load.
2. Pull up to V
CC
on host Board.
3. Internally AC coupled, but requires a 100Ohm differential termination at or internal to Serializer/
Deserializer.
4. These are 20%~80% values.
Unit
mA
V
V
V
kΩ
V
V
V
kΩ
V
V
nsec
Note
1
2
3
2
4
2
DELTA ELECTRONICS, INC.
3/20/2009
Rev. 0A
www.deltaww.com
Optical Characteristics
(V
CC
=3.3V
±
5%, Data Rate=155Mb/sec, PRBS=2
23
-1 NRZ)
Parameter
Transmitter
Output Optical Power (Avg.)
LCP-155A4HDR
LCP-155B4JDR
Optical Extinction Ratio
Center Wavelength
LCP-155A4HDR
LCP-155B4JDR
Spectral Width (RMS)
LCP-155A4HDR
LCP-155B4JDR
Optical Rise/ Fall Time
Output Eye
Symbol
Min.
Typ.
Max.
Unit
Note
P
O
ER
λ
C
σ
-20
-15
10
1260
1261
-14
-8
dBm
dB
1360
1360
nm
nm
7.7
7.7
2
nsec
1
t
r
/t
f
Compliant with Bellcore TR-NWT-000253 and ITU recommendation
G.957
-31
-31
1600
-31
-31
-45
0.5
-14
-8
dBm
nm
dBm
dBm
dB
dBm
2
Receiver
Sensitivity (Avg.)
P
IN
LCP-155A4HDR
LCP-155B4JDR
λ
Input Optical Wavelength
LOS-Deasserted (Avg.)
LCP-155A4HDR
P
A
LCP-155B4JDR
LOS-Asserted (Avg.)
P
D
LOS-Hysteresis
P
A
-P
D
Overload
P
O
LCP-155A4HDR
LCP-155B4JDR
Notes:
1. These are unfiltered 10%~90% values
2
23
-1 PRBS and ER=9dB.
1100
2. The sensitivity is provided at a BER of 1×10
-10
or better with an input signal consisting of 155Mb/s,
3
DELTA ELECTRONICS, INC.
3/20/2009
Rev. 0A
www.deltaww.com
Mask of the eye diagram for the optical transmit signal
SFP Transceiver Electrical Pad Layout
4
DELTA ELECTRONICS, INC.
3/20/2009
Rev. 0A
www.deltaww.com
Pin Function Definitions
Pin Num.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Name
VeeT
TX Fault
TX Disable
MOD-DEF2
MOD-DEF1
MOD-DEF0
Rate Select
LOS
VeeR
VeeR
VeeR
RD-
RD+
VeeR
VccR
VccT
VeeT
TD+
TD-
VeeT
Function
Transmitter Ground
Transmitter Fault Indication
Transmitter Disable
Module Definition 2
Module Definition 1
Module Definition 0
Not Connect
Loss of Signal
Receiver Ground
Receiver Ground
Receiver Ground
Inv. Received Data Out
Received Data Out
Receiver Ground
Receiver Power
Transmitter Power
Transmitter Ground
Transmit Data In
Inv. Transmit Data In
Transmitter Ground
Plug Seq.
1
3
3
3
3
3
3
3
1
1
1
3
3
1
2
2
1
3
3
1
Notes
Note 1
Note 2
Module disables on high or open
Note 3, 2 wire serial ID interface
Note 3, 2 wire serial ID interface
Note 3, Grounded in Module
Function not available
Note 4
Note 5
Note 5
Note 5
Note 6
Note 7
Note 5
3.3 ± 5%, Note 7
3.3 ± 5%, Note 7
Note 5
Note 8
Note 8
Note 5
Plug Seq.: Pin engagement sequence during hot plugging.
Notes:
1)
TX Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor on the host
board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates a laser fault of some kind.
Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.
2)
TX disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module
with a 4.7 – 10 K
Ω
resistor. Its states are:
Low (0 – 0.8V):
(>0.8, < 2.0V):
High (2.0 – 3.465V):
Open:
3)
Transmitter on
Undefined
Transmitter Disabled
Transmitter Disabled
Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10KΩresistor on the
host board. The pull-up voltage shall be VccT or VccR (see Section IV for further details). Mod-Def 0 is grounded
by the module to indicate that the module is present Mod-Def 1 is the clock line of two wire serial interface for
serial ID Mod-Def 2 is the data line of two wire serial interface for serial ID
4)
LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor.
Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is
below the worst-case receiver sensitivity (as defined by the standard in use). Low indicates normal operation. In
the low state, the output will be pulled to < 0.8V.
5)
6)
VeeR and VeeT may be internally connected within the SFP module.
RD-/+: These are the differential receiver outputs. They are AC coupled 100Ω differential lines which should be
terminated with 100Ω (differential) at the user SERDES. The AC coupling is done inside the module and is thus
not required on the host board. The voltage swing on these lines will be between 370 and 2000 mV differential
(185 – 1000 mV single ended) when properly terminated.
5
DELTA ELECTRONICS, INC.
3/20/2009
Rev. 0A
www.deltaww.com
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