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Datasheet File OCR Text:

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 Industry standard small form pluggable (SFP) package Hot-pluggable capability Duplex LC connector Metal enclosure, for lower EMI Very low jitter Low power dissipation Link length up to 20km in 9/125 SMF
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 contains the detailed product's information stored for retrieval by host equipment. For further information, please refer to SFP Multi-Source Agreement (MSA). 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.
Specification:
Operating Information Part Number MXP-243S Input/Output AC/AC Signal Detect TTL Voltage +3.3V Temperature 0ae to70ae
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Transmitter Optical, Electrical Characteristics Parameter Input differential impedance Differential data input swing Transmit Disable Input High Voltage Transmit Disable Input Low Voltage Transmit Fault OutputHighVoltage Transmit Fault Output LowVoltage Transmit Disable Assert Time Optical Transmit Power Extinction Ratio Output Spectrum Width(RMS) PO ER -9.5 9 4 0.14 2.0 0.8 5 -3 Symbol Rin Vin PP 100 2.0 0.8 Min Typ 100 1200 Max Unit mV V V V V s dBm dB nm Average Power Note
Receiver Optical, Electrical Characteristics Parameter Single ended data output swing Receiver Loss of Signal Output Voltage -high Receiver Loss of Signal Output Voltage -low Sensitivity Maximum Input Power Signal detect Range Signal detect-Hysteresis Sen PinMAX -3 -30 0.5 -21 Symbol Vout PP Min 200 2 0.8 -20 Typ Max 800 Unit mV V V dBm dBm dBm dB BER<1E-10 Note
Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Power Supply Voltage Symbol TS TO VCC Min -40 0 -0.5 Max +85 ae ae V +70 6.0 Unit Note
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Pin View
20 19 18 17 16 15 14 13 12 11 VEET TDTD+ VEET VCCT VCCR VEER RD+ RDVEER 1 2 3 4 5 6 7 8 9 10 VEET TX Fault TX Disable MOD_DEF(2) MOD_DEF(1) MOD_DEF(0) Rate Select LOS VEER VEER
Top of board
Bottom of board
Pin
Assignment:
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Name VEET TXFAULT TXDIS MOD_DEF(2) MOD_DEF(1) MOD_DEF(0) Rate Select LOS VEER VEER VEER RDRD+ VEER VCCR VCCT VEET TD+ TDVEET Transmitter Ground Transmitter Fault. Transmitter Disable. SDA Serial Data Signal SCL Serial Clock Signal Grounded within the module. No connection required
Description
Loss of Signal indication. Logic 0 indicates normal operation. Receiver Ground Receiver Ground Receiver Ground Receiver Inverted DATA out. Receiver Non-inverted DATA out. Receiver Ground Receiver Power Supply Transmitter Power Supply Transmitter Ground Transmitter Non-Inverted DATA in. Transmitter Inverted DATA in. Transmitter Ground
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Block Diagram Of Transceiver
Transmitter Section
The transmitter section
RXLOS RXdRXd+
RECEIVER
LIMITING AMP
DATA+ DATAVCC
consists of 1310nm FP laser in an eye safe optical subassembly (OSA) which mates to the fiber cable. The laser OSA is driven by a LD driver IC which converts differential input LVPECL logic signals into an analog laser driving current.
CONNECTOR
MOD_DEF(2) MOD_DEF(1) MOD_DEF(0)
TRANSMITTER
BIAS
TXd+ TXdTX-DIS
TX-FAULT
DRIVER
DATA+
PM
TX-FAULT TX Fault is an open collector/drain output, which should be pulled up with a 4.7K - 10K 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 K 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 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.
LD
LD
DATA-
VCC
PT
ID E PROM
2
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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 - 10Kresistor. 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 100 differential lines which should be terminated with 100 (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
DC+3.3V
4.7K to 10K|
TX-DISABLE
SFP Module
DC+3.3V
4.7K to 10K|
TX-FAULT SerDat OUT+ TX-DAT TX-DATQ
DC+3.3V
Z0=50| Z0=50|
PECL
2X150|
SerDat OUT-
Laser driver
DC+3.3V
SerDat IN-
Z0=50| Z0=50|
RX-DATQ RX-DAT
PECL
DC+3.3V
4.7K to 10K|
SerDat IN+
Amplifier
RX-LOS
DC +3.3V
3X4.7K to 10K|
MOD-DEF(2) MOD-DEF(1) MOD-DEF(0)
EEPROM
RGND
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Dimensions
Dimensions are in millimeters. All dimensions are 0.1mm unless otherwise specified.
7
(unit:mm).
S N : 0 0 0 0 0 20 0
11 54.5
M X P - 2 3S 4
Transceiver
3.65
3.5
8.6
1
8 13.5 15.5
1.9
5.5
1.5
6.25
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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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