Wodaplug GEPON SFP module

WDS5441H-C(H)3AL GEPON OLT SFP TRANSCEIVER MODULE, 1000BASE-PX20+++, 7dBi

General Description

WDS5441H-C(H)3AL is a high performance transceiver module for single fiber communications using a 1490nm continuous-mode transmitter and a 1310nm burst-mode receiver. It is designed to meet CTC 3.0 and IEEE802.3ah -2004 1000BASE- PX20+++ applications.

The transmitter has automatic power control (APC) function and temperature compensation circuitry to ensure stable optical power output and extinction ratio over all operating temperature range. The transmitter meets Class 1 eye safety per IEC825 and CDRH standards.

The receiver has a hermetically packaged APD-TIA (trans-impedance amplifier) pre-amplifier and a limiting amplifier with LVPECL compatible differential outputs. It features a burst-mode Loss of signal (LOS) output which is LVTTL compatible. The receiver offers bust-mode RSSI outputs, which is I2C accessible digitized data stored in the internal flash memory.

The module provides digital diagnostic information of its operating conditions and status, including transmitting power, laser bias current, module temperature, supply voltage, and burst-mode receiving power. Calibration and alarm/warning threshold data are written and stored in the internal memory (EEPROM). The memory map is compatible with SFF-8472.

Features

Single fiber bi-directional data links application with 1.25Gbps upstream and 1.25Gbps downstream. z 1490nm continuous mode DFB transmitter.
1310nm burst mode APD-TIA receiver. z High power 1550nm video signal rejection . z 0 to 70°C and -40 to 85°C operating case temperature. z SFP package with SC/UPC receptacle. z Single +3.3V power supply. z LVPECL interface logic level for data input and output. z LVTTL transmitter disable control
LVTTL transmitter laser failure alarm z LVTTL receiver Loss of Signal (LOS) indication z LVTTL RSSI Trigger control z Low EMI and excellent ESD protection z ClassⅠlaser safety standard IEC-60825 compliant z Complies with RoHS-6

Applications

Gigabit Ethernet Passive Optical Networks(GEPON) – OLT side

Standards

Compliant with SFF MSA – 2000
Compliant with SFF-8472 Rev.11.0
Compliant with IEEE 802.3ah-2004
Compliant with FCC 47 CFR Part 15, Class B
Compliant with FDA 21 CFR 1040.10 and 1040.11, ClassⅠ
Complies with China Telecom EPON equipment technology requirement V3.0

Absolute Maximum Ratings

Parameter	Symbol	Minim	Maxim	Unit	Note
Storage Ambient Temperature	TSTG	-40	85	°C
Operating Case Temperature	T_c	-10	75	°C	C-Temp
Operating Case Temperature	T_c	-40	90	°C	I-Temp
Operating Humidity	OH	5	95	%
Power Supply Voltage	VCC	0	4	V
Receiver Damaged Threshold			4	dBm
Soldering Temperature			260/10	°C/S

Recommended Operating Conditions

Parameter	Symbol	Minim	Typical	Maxim	Unit	Note
Power Supply Voltage	VCC	3.13	3.3	3.47	V	3.3V±5%
Parameter	Symbol	Minim	Typical	Maxim	Unit	Note
Operating Current	Icc			400	mA
Operating Case Temperature	T_c	0		70	°C	C-Temp
Operating Case Temperature	T_c	-40		85	°C	I-Temp
Operating Humidity Range	OH	5		85	%
Data Rate upstream			1.25		Gbit/s
Data Rate downstream			1.25		Gbit/s
Data Rate Drift		-100		+100	PPM

Transmitter Optical and Electrical Characteristics

Parameter	Symb	Minum	Typical	Maxim	Unit	Note
Optical Center Wavelength	λC	1480	1490	1500	nm
Side Mode Suppression Ratio	SMSR	30			dB
Optical Spectrum Width	∆λ			1	nm
Average Launch Optical Power	Po	+2.5		+7	dBm	1
Power-OFF Transmitter Optical Power	Poff			-41	dBm
Extinction Ratio	ER	9			dB	2
Rise/Fall Time (20%-80%)	TR/TF			260	ps	2,3
Optical Return and Loss Tolerance				15	dB
Transmitter Reflectance				-10	dB
Transmitter and Dispersion Penalty	TDP			2.3	dB	4
Optical Waveform Diagram	Compliant With IEEE Std 802.3ah™ -2004 Figure 60-6
Data Input Differential Swing	Vin_p-p	200		2400	mV	5
Input Differential Impedance	Z_in	90	100	110	Ω
Transmitter Fault Indication Voltage-Low	VTx_F-L			0.4	V
Transmitter Fault Indication Voltage-Hight	VTx_F-H	2.4			V
Transmitter enable control Voltage – Low	Ven-L	0		0.8	V
Transmitter disable control Voltage – High	Vdis-H	2.0		VCC	V
TX Disable Negate time	Tx_on			1	ms	6
TX Disable Assert time	Tx_off			10	us	6

Note 1: Launched into 9/125um Single Mode Fiber.

Note 2: Measured with PRBS 2⁷-1 test pattern @1.25Gbit/s.

Note 3: Measured with the Bessel-Thompson filter OFF.

Note 4: Maximum sensitivity penalty due to transmitter and dispersion effect through 20km of SMF optical fiber.

Note 5: Compatible with LVPECL input, AC coupled internally.

Note 6: Transmitter enable and disable timing.

Receiver Optical and Electrical Characteristics

Parameter	Symbol	Minum	Typical	Maxim	Unit	Notes
Operating Wavelength	λC	1260	1310	1360	nm
Sensitivity	SEN			-30	dBm	1
Saturation Optical Power	SAT	-6			dBm
Receiver burst_mode dynamic		15			dB	2
Burst LOS Assert	LOS_L-H	-45			dBm	3
Burst LOS De-assert Level	LOS_H-L			-31	dBm
Burst LOS Assert time	TLOSA			500	ns	Figure 2
Burst LOS Deassert time	TLOSD			500	ns
Receiver Reflectance				-20	dB	@1310nm
Data Output Voltage-High	Vout__H	Vcc-1085		Vcc-880	mV	4
Data Output Voltage-Low	Vout__L	Vcc-1830		Vcc-1620	mV
LOS Voltage – Low	LOS_L	0		0.4	V
LOS Voltage – High	LOS_H	2.4		VCC	V
RSSI accuracy		-3		+3	dB	5

Note 1: Measured with a PRBS 2⁷-1 test pattern @1.25Gbit/s and ER=10dB, BER =10^-12.

Note 2: Input optical power level difference of adjacent burst packets.

Note 3: Low level indicates generic form of that burst packet is detected by the receiver.

Note 4: LVPECL output, DC coupled internally, guaranteed in the full range of input optical power (-6dBm to -30dBm).

Note 5: RSSI DDM accuracy is better than +/-2dB (25℃) or +/-3dB (0℃~70℃) for input power levels between -6 to -30 dBm. Measured with 1310nm, 1.25Gbps PRBS27-1 burst-mode optical input, ER=10dB, 50%duty cycle.