ETC2 MXP-245LV 1.25g sfp transceiver Datasheet

1.25G SFP Transceiver
MXP-243S
Applications:
1.25Gb/s 1000Base-LX Ethernet
1.0625Gb/s Fiber Channel
Features:
Operating bit rate
1.25Gb/s
Operating at
1280-1330nm wavelength
Single +3.3V power
supply
Differential LVPECL
inputs and outputs
TTL signal detect
indicator
Description
MXP-243S SFP transceiver is an excellent product , which is a series of
high performance optical modules suitable for the Fiber optic communication
and Ethernet accessing for signal that rates up to 1.25Gb/s.
The transmitter section of MXP-243S SFP incorporates 1310nm FP laser as
the optical source. And the receiver section consists of a PIN photodiode mounted
together with a trans-impedance preamplifier (TIA).
Because of its hot-pluggable capability , MXP-243S SFP transceiver can
be installed in or removed from any MSA compliant pluggable small form
factor port
regardless of whether the host equipment is operating or not.
Furthermore , MXP-243S SFP transceiver features an E/EPROM that
Industry standard
contains the detailed product’s information stored for retrieval by host
small form pluggable
equipment. For further information, please refer to SFP Multi-Source
(SFP) package
Agreement (MSA).
Hot-pluggable
capability
The transceiver operates at up to1.25G data-rate from a single +3.3 V
power supply only. And it uses TTL signal as detect indicator.
Duplex LC connector
Metal enclosure, for
Specification:
lower EMI
Very low jitter
Operating Information
Low power
Part Number
Input/Output
Signal Detect
Voltage
Temperature
MXP-243S
AC/AC
TTL
+3.3V
0℃ to70℃
dissipation
Link length up to
20km in 9/125 SMF
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Transmitter Optical, Electrical Characteristics
Parameter
Symbol
Input differential impedance
Rin
Differential data input swing
Vin PP
Min
Typ
Max
Unit
100
100
Transmit Disable Input High Voltage
Ω
1200
mV
2.0
V
Transmit Disable Input Low Voltage
0.8
Transmit Fault OutputHighVoltage
V
2.0
V
Transmit Fault Output LowVoltage
Transmit Disable Assert Time
0.14
Optical Transmit Power
PO
-9.5
Extinction Ratio
ER
9
Output Spectrum Width(RMS)
∆λ
Note
0.8
V
5
µs
-3
dBm
Average Power
dB
4
nm
Receiver Optical, Electrical Characteristics
Parameter
Single ended data output swing
Symbol
Min
Vout PP
200
Receiver Loss of Signal Output
Typ
800
mV
Voltage -low
Sen
PinMAX
0.8
V
-20
dBm
-3
Signal detect Range
-30
Signal detect-Hysteresis
0.5
Note
V
Receiver Loss of Signal Output
Maximum Input Power
Unit
2
Voltage -high
Sensitivity
Max
BER<1E-10
dBm
-21
dBm
dB
Absolute Maximum Ratings
Parameter
Symbol
Min
Max
Unit
Storage Temperature
TS
-40
+85
℃
Operating Temperature
TO
0
+70
℃
Power Supply Voltage
VCC
-0.5
6.0
V
Note
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Pin View:
20
VEET
1
VEET
19
TD-
2
TX Fault
18
TD+
3
TX Disable
17
VEET
4
MOD_DEF(2)
16
VCCT
5
MOD_DEF(1)
15
VCCR
6
MOD_DEF(0)
14
VEER
7
Rate Select
13
RD+
8
LOS
12
RD-
9
VEER
11
VEER
10
VEER
Top of board
Pin
Bottom of board
Assignment:
Pin
Name
Description
1
VEET
Transmitter Ground
2
TXFAULT
Transmitter Fault.
3
TXDIS
Transmitter Disable.
4
MOD_DEF(2)
SDA Serial Data Signal
5
MOD_DEF(1)
SCL Serial Clock Signal
6
MOD_DEF(0)
Grounded within the module.
7
Rate Select
No connection required
8
LOS
Loss of Signal indication. Logic 0 indicates normal operation.
9
VEER
Receiver Ground
10
VEER
Receiver Ground
11
VEER
Receiver Ground
12
RD-
Receiver Inverted DATA out.
13
RD+
Receiver Non-inverted DATA out.
14
VEER
Receiver Ground
15
VCCR
Receiver Power Supply
16
VCCT
Transmitter Power Supply
17
VEET
Transmitter Ground
18
TD+
Transmitter Non-Inverted DATA in.
19
TD-
Transmitter Inverted DATA in.
20
VEET
Transmitter Ground
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Block Diagram Of Transceiver
Transmitter Section
section
RXdRXd+
MOD_DEF(1)
MOD_DEF(0)
BIAS
a LD driver IC which
TXd+
converts differential input
TXdTX-DIS
LVPECL logic signals into
VCC
TRANSMITTER
2
The laser OSA is driven by
MOD_DEF(2)
ID E PROM
mates to the fiber cable.
CONNECTOR
subassembly (OSA) which
DATA-
VCC
laser in an eye safe optical
DATA+
PT
RXLOS
TX-FAULT
DATA+
DATA-
LD
consists of 1310nm FP
LIMITING AMP
RECEIVER
DRIVER
transmitter
PM
LD
The
an analog laser driving
current.
TX-FAULT
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.
When sensing an improper power level in the laser driver, the SFP sets this signal
high and turns off the laser. TX-FAULT can be reset with the TX-DISABLE line. The
signal is in TTL level.
TX-DISABLE
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 KΩ resistor. Its states are: Low (0 – 0.8V):
Transmitter on; (>0.8, < 2.0V): Undefined; High (2.0 – 3.465V): Transmitter Disabled;
Open: Transmitter Disabled. The TX-DISABLE signal is high (TTL logic “1”) to turn off
the laser output. The laser will turn on when TX-DISABLE is low (TTL logic “0”).
TD-/+
These are the differential transmitter inputs. They are AC-coupled, differential lines
with 100Ω 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.
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Receiver Section
The receiver utilizes an InGaAs PIN photodiode mounted together with a
trans-impedance preamplifier IC in an OSA. This OSA is connected to a circuit providing
post-amplification quantization, and optical signal detection.
RX-LOS
LOS (Loss of Signal) is an open collector/drain output, which should be pulled up
with a 4.7K – 10KΩresistor. 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.
The RX-LOS is high (TTL logic “1”) when there is no incoming light from the
companion transceiver. This signal is normally used by the system for the diagnostic
purpose. The signal is operated in TTL level.
RD-/+
These are the differential receiver outputs. They are AC coupled 100Ω differential
lines which should be terminated with 100 Ω(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.
Recommended Interface Circuit
Host Board
SFP Module
DC+3.3V
DC+3.3V
4.7K to 10KΩ
4.7K to 10KΩ
TX-DISABLE
DC+3.3V
TX-FAULT
PECL
SerDat OUT+
Z0=50Ω
TX-DAT
SerDat OUT-
Z0=50Ω
TX-DATQ
SerDat IN-
Z0=50Ω
RX-DATQ
SerDat IN+
Z0=50Ω
RX-DAT
Laser
driver
2X150Ω
DC+3.3V
PECL
Amplifier
DC+3.3V
4.7K to 10KΩ
RX-LOS
DC +3.3V
3X4.7K to 10KΩ
MOD-DEF(2)
MOD-DEF(1)
EEPROM
MOD-DEF(0)
RGND
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Dimensions
Dimensions are in millimeters. All dimensions are ±0.1mm unless otherwise specified.
(unit:mm).
7
0
0
2
0
0
0
0
0
:
N
S
11
54.5
S
3
2
-
P
X
M
3.65
5.5
8
1.9
3.5
8.6
1
6.25
1.5
r
e
v
i
e
c
s
n
a
r
T
4
13.5
15.5
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Statement:
Genuine-optical company has the ultimate explanation authority to the content of the product material, if there have some
modifies, we’re sorry for can’t give a notice.
Users should for our company on their one's own uses performance should having prove going on of products, our
company is not responsible for performance of user's products . Any standard , agreement that this text quotes are only for
referential use, do not do the basis of examining the quality of the products , whether the products are qualified to produce
factory's test stone to fix with our company.
Version:
V2.1
Publishing Date: 2005-04-28
Contact Information:
Address: Huagong Tech BDG, Science &Technology Region of Hust,
Donghu High-Tech Zone, Wuhan Hubei, P.R.China
Post Code: 430223
Tel: +86-27-87180097
Website: http://www.genuine-opto.com
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