LCP-3072B4LDRx
RoHS Compliant 1310nm 3.072 / 2.4576Gbps SFP Transceiver for
OBSAI/CPRI Application with Digital Diagnostic Monitoring Function
FEATURES
Compliant with SFP Transceiver SFF-8472
MSA specification with internal calibration
LCP-3072B4LDRx compliant with OBSAI or
CPRI protocols for wireless base station
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
Duplex LC Connector interface
Description
The
transceiver
is
hot
pluggable
3.3V
Small-Form-Factor transceiver modules designed
expressly
for
high-speed
communication
applications that require rates up to 3.072Gbps.
The transceiver is 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 transceiver 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
Up to 20km link over SMF for 3.072/2.4576Gbps
CPRI/OBSAI application
Performance
LCP-3072B4LDRx: 1310nm DFB laser, 13dB link
budget.
1
DELTA ELECTRONICS, INC.
2010/04/30
Rev. S0
www.deltaww.com
LCP-3072B4LDRx
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.
-40
3.135
Typ.
Max.
85
3.465
Unit
ºC
V
Note
1
Electrical Characteristics
(V
CC
=3.3V
±
5%)
Parameter
Total Supply Current
Transmitter
Transmitter Differential Input Voltage
Transmitter Disable Input-High
Transmitter Disable Input-Low
Transmitter Fault Pull up Resistor
Transmitter Fault Output-High
Transmitter Fault Output-Low
Receiver
Receiver Differential Output Voltage
Receiver LOS Load
LOS Output Voltage-High
LOS Output Voltage-Low
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.
Symbol
I
CCT
V
DT
V
DISH
V
DISL
R
TX_FAULT
V
TXFH
V
TXFL
V
DR
R
RXLOS
V
LOSH
V
LOSL
Min.
Typ.
Max.
300
2.4
V
CC
+0.3
0.8
10
V
CC
+0.3
0.8
2
10
V
CC
+0.3
0.8
Unit
mA
V
V
V
k
V
V
V
k
V
V
Note
0.5
2
0
4.7
2
0
0.35
4.7
2
0
1
2
3
2
2
DELTA ELECTRONICS, INC.
2010/04/30
Rev. S0
www.deltaww.com
LCP-3072B4LDRx
Optical Characteristics
Transmitter
7
(V
CC
=3.3V
±
5%, Data Rate=2.4576Gbps and 3.072Gbps, PRBS=2 -1 NRZ)
Parameter
Symbol
Min.
Typ.
Max.
Output Optical Power (Avg.)
P
-5
0
Optical Modulation Amplitude
OMA
409
λ
C
1285
Center Wavelength
1310
1345
Spectral Width
Side-mode Suppression Ratio
σ
SMSR
30
1
Unit
dBm
uW
nm
nm
dB
psec
ps
1
Note
Optical Rise/ Fall Time
t
r
/t
f
150
Total Jitter(peak-to-peak)
TJp-p
80
Receiver
7
(V
CC
=3.3V
±
5%, Data Rate=2.4576Gbps and 3.072Gbps, PRBS=2 -1 NRZ)
Parameter
Symbol
Min.
Typ.
Max.
Sensitivity in OMA
P
S
-18
LOS-Deasserted (Avg.)
P
A
-18
LOS-Asserted (Avg.)
P
D
-45
LOS-Hysteresis
P
A
-P
D
0.5
Overload
P
0
0
Return Loss
r
12
Notes:
1. These are unfiltered 20%~80% values.
2. Measured with a PRBS 2 -1 and ER=9dB at a BER<10
7
-12
Unit
dBm
dBm
dBm
dB
dBm
dB
Note
2
2
2
2
3
DELTA ELECTRONICS, INC.
2010/04/30
Rev. S0
www.deltaww.com
LCP-3072B4LDRx
SFP Transceiver Electrical Pad Layout
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.
4
DELTA ELECTRONICS, INC.
2010/04/30
Rev. S0
www.deltaww.com
LCP-3072B4LDRx
Notes:
1)
TX Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10K
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
Low (0 – 0.8V):
(>0.8, < 2.0V):
High (2.0 – 3.465V):
Open:
3)
resistor. Its states are:
Transmitter on
Undefined
Transmitter Disabled
Transmitter Disabled
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.
Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10K resistor 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 – 10K
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 100
terminated with 100
differential lines which should be
(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.
7)
VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V ±5% at the SFP
connector pin. Recommended host board power supply filtering is shown below. Inductors with DC resistance of
less than 1 ohm should be used in order to maintain the required voltage at the SFP input pin with 3.3V supply
voltage. When the recommended supply-filtering network is used, hot plugging of the SFP transceiver module will
result in an inrush current of no more than 30mA greater than the steady state value. VccR and VccT may be
internally connected within the SFP transceiver module.
8) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100
differential termination inside the module. The AC coupling is done inside the module and is thus not
required on the host board. The inputs will accept differential swings of 500 – 2400 mV (250 – 1200
mV single-ended), though it is recommended that values between 500 and 1200 mV differential (250 –
600 mV single-ended) be used for best EMI performance.
5
DELTA ELECTRONICS, INC.
2010/04/30
Rev. S0
www.deltaww.com
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