1.25G 1490/1310nm 20km CSFP transceiver,SPT-W431G-20D

SPT-W431G-20D

CSFP 1.25G 2Channel 1490T/1310R 20KM

Features

LC Duplex optical interface;
20km reach;
1250Mb/s data rate;
+3.3V power supply;
Low DC power consumption;
Comply with CSFP MSA Option2;
Bail Latch;
Hot swappable;
2 Channel Bidirectional Optical Transceiver unit:
1490nm DFB laser,
1310nm PIN/TIA receiver;
Single Mode operation;
BER < 1X10-12 (PRBS 27 - 1 NRZ test pattern);
IEEE 802.3ah 1000BASE-BX compliant;
Case operating temperature ranges:
Commercial: 0 to 70ºC;
Industrial: -40 to 85ºC;
Monitor and Control Functions;
Loss of Signal (Rx1_LOS,Rx2_LOS), LVTTL;
Tx Disable (Tx1_DIS,Tx2_DIS), LVTTL;
Tx Fault (Tx_FAULT), LVTTL;
2-wire I2C data bus;
SFF-8472 Rev 9.5 MSA compliant;
Internally AC coupled and terminated;
RoHS compliance.

Applications

1250Mb/s Gigabit Ethernet data links;
Channel extenders;
Bus extenders;
High speed I/O file servers;
Data storage networks;
LAN,SAN,RSAN;
Host adapters;
Switch-to-switch interfaces;
Mass storage system interconnects;
Hub interconnects;
Router interconnects;
Distributed multi-processing;
Telecom switches.

Product Description

The SPT-W431G-20D 1000BASE-BX CSFP Transceiver LC 2-Channel bidirectional transceiver is intended for 20km reach service in 1250Mb/s single mode high-speed LAN and SAN data communications equipment where low-cost, extraordinary performance and reliability are essential. It meets the requirements of IEEE802.3ah 1000BASE-BX, consumes low power, operates from a 3.3V DC power supply and is offered in the commercial and industrial temperature ranges. The industry standard 2x10 compact small form pluggable (CSFP) package is fabricated with a rugged die cast metal housing and cage assembly. The low jitter and low bit error rate optical assembly features a 1490nm DFB laser transmitter and 1310nm PIN/TIA receiver. It incorporates the CSFP MSA LVTTL Loss of Signal (Rx_LOS), Tx Fault (Tx_FAULT) and Tx Disable (Tx_DIS) monitor and control functions and the SFF-8472 Rev9.5 compliant digital diagnostic monitor feature which is accessed via the I2C 2-wire serial ID interface. The device is Class I laser safety compliant.

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Units
Storage Ambient Temperature	Tstg	-40	+85	ºC
Relative Humidity-Storage	RHS	0	95	%
Relative Humidity-Operating	RHO	0	85	%
Module Supply Voltage	VCC	0	3.6	V
TX DATA	Vin	0	Vcc+0.5	V

Opticaland Electrical Signal Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Units
Signal/Data Input Voltage (Tx_DATA)	VINPK-PK	-	2.4	V
8472 Clock Signal (Standard Mode)	ICLOCK	-	100	kHz
8472 Clock Signal (Fast Mode)	ICLOCK	-	400	kHz
Rx Optical Input Power	PIN-MAX	-	3	dBm

Logic State Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Units
Tx1_DISABLE Logic HIGH State	Tx1_DIS	-	VCC+0.5	V
Tx2_DISABLE Logic HIGH State	Tx2_DIS	-	VCC+0.5	V
Tx_FAULT Logic HIGH State	Tx_FAULT	-	VCC+0.5	V
Rx1_LOS Logic HIGH State	Rx1_LOS	-	VCC+0.5	V
Rx2_LOS Logic HIGH State	Rx2_LOS	-	VCC+0.5	V
8472 MOD-DEF	MOD_DEF	-	VCC+0.5	V

Recommended Operating Conditions

Parameter	Symbol	Min	Typ	Max	Units	Notes
Case Operating Temperature	Tcase	0	+25	70	ºC	Temperature Range=C
Case Operating Temperature	Tcase	-40	+25	+85	ºC	Temperature Range=H
Module Supply Voltage	VCC	3.14	3.3	3.465	V
Module Supply Current	IIN			250	mA

Transmitter Electrical Characteristic

Parameter	Symbol	Min	Typ	Max	Units	Notes
Tx_Data Differential Input Voltage	VIN	300	-	2400	mV	Internally AC couple dand terminated
Tx_Differential Input Impen dence	ZIN	-	100	-
Tx1_DISABLE Logic HIGH State	VTDH1	2.4	-	VCC+0.3	V
Tx1_DISABLE Logic LOW State	VTDL1	0	-	0.8	V
Tx2_DISABLE Logic HIGH State	VTDH2	2.4	-	VCC+0.3	V
Tx2_DISABLE Logic LOW State	VTDL2	0	-	0.8	V
Tx_FAULT Logic HIGH State	VTFH	2.4	-	VCC+0.3	V
Tx_FAULT Logic LOW State	VTFL	0	-	0.8	V

Receiver Electrical Characteristics

Parameter	Symbol	Typ	Max	Units	Notes	Typ
Rx_Data Differential Output Voltage	VOUT	200	-	1800	mV	Internally AC couple dand terminated
Rx_Differential Output Impedance	ZOUT	-	100	-
Rx1_LOS Logic HIGH State	VRLH1	2.4	-	VCC+0.3	V
Rx1_LOS Logic LOW State	VRLL1	0	-	0.8	V
Rx2_LOS Logic HIGH State	VRLH2	2.4	-	VCC+0.3	V
Rx2_LOS Logic LOW State	VRLL2	0	-	0.8	V

Transmitter Optical Characteristics

Parameter	Symbol	Min	Typ	Max	Units	Conditions/Notes
Transmitter Type		1490nm DFB
Optical Launch Power	POUT	-9	-	-3	dBm	Average Optical Output
Optical Center Wavelength	λ	1480	1490	1500	nm
Spectral Line Width@-20dB	λ	-	-	1	nm
Side Mode Suppression Ratio	SMSR	30	-	-	dB
Extinction Ratio	ER	9	-	-	dB
Optical Riseand Fall Time	tr,/tf	-	-	260	ps	20%-80%
Relative Intensity Noise	RIN	-	-	-120	dB/Hz
Peak to Peak Jitter	JP-P	-	-	0.2	UI
Output Eye	IEEE802.3ah 1000BASE-BX Compliant

Receiver Optical Characteristics

Parameter	Symbol	Min	Typ	Max	Units	Notes
Receiver Type		PIN/TIA
Receiver Sensitivity	PIN	-	-	-23	dBm	Average Received Power (Note1)
Receiver Optical Overload	PIN(MAX)	-3	-	-	dBm	Average Received Power (Note1)
Optical Center Wavelength	λ	1260	1310	1360	nm
Receiver Reflectance	RFL	-	-	-12	dB
Rx_LOS of Signal Assert	PA	-45	-	-	dBm
Rx_LOS of Signal Deassert	PD	-	-	-23	dBm
Rx_LOS of Signal Hysteresis	PHy	0.5	-	5	dB
Note 1: Average received power where the BER = 10-12 , measured with a PRBS 27 -1 NRZ test pattern