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CLASS C++ GPON OLT SFP Module

Class c++, SFP, 20Km,

The Class C++ SFP module is mainly used on Gigabit-capable Passive Optical Networks (GPON) networks. It is Class C++ type, with 20Km transmitting distance.

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Overview

The Class C++ SFP module is mainly used on Gigabit-capable Passive Optical Networks (GPON) networks. It is Class C++ type, with 20Km transmitting distance.

Features:

Single fiber bi-directional data links asymmetric TX 2488Mbps/RX1244Mbps application

1490nm continuous-mode DFB laser transmitter and 1310nm burst-mode APD-TIA receiver

Small Form Factor Pluggable package with SC/UPC Connector

Reset burst-mode receiver design support more than 15dB dynamic range

0 to 70°C operating case temperature

Single 3.3V power supply

Digital diagnostic monitoring interface

Digital burst RSSI function to monitor the input optical power level

LVPECL compatible data input/output interface

LVTTL transmitter disable control

LVTTL transmitter laser fault alarm

LVTTL receiver Signal Detect (SD) indication response within 50ns.

Low EMI and excellent ESD protection

Class I laser safety standard IEC-60825 compliant

Standards

Complies with SFP Multi-Source Agreement (MSA) SFF-8074i

Complies with SFF-8472 Rev 9.5

Complies with ITU-T G.984.2 Amendment 2

Complies with FCC 47 CFR Part 15, Class B

Complies with FDA 21 CFR 1040.10 and 1040.11

ABSOLUTE MAXIMUM RATING

Parameter	Symbol	Min.	Max.	Unit
Storage Ambient Temperature	TSTG	-40	85	°C
Operating Case Temperature	Tc	0	70	°C
Operating Humidity	OHS	5	95	%
Power Supply Voltage	VCC	0	3.6	V
Receiver Damaged Threshold		+5		dBm

RECOMMENDED OPERATING CONDITION

Parameter	Symbol	Min.	Typ.	Max.	Unit
Power Supply Voltage	VCC	3.13	3.3	3.47	V
Power Supply Current			350	500	mA
Operating Case Temperature	Tc	0		70	°C
Operating Humidity Range	OHO	5		85	%
Nominal Data Rate			RX 1244.16 TX 2488.32		Mbit/s

TRANSMITTER OPTICAL CHARACTERISTICS

Parameter	Symbol	Min.	Max.	Unit	Notes
Optical Center Wavelength	λC	1480	1500	nm
Optical Spectrum Width (-20dB)	∆λ		1	nm
Side Mode Suppression Ratio	SMSR	30		dB
Average Launch Optical Power	AOP	+5.5	+10	dBm	BOL, Normal Temperature
Average Launch Optical Power	AOP	+4.5	+10	dBm	EOL, 0~70°C
Power-OFF Transmitter Optical Power			-39	dBm	Launched into SMF
Extinction Ratio	ER	8.2		dB	PRBS 223-1+72CID @2.488Gbit/s
Tolerance to Transmitter Incident Light		-15		dB
Transmitter Reflectance			-10	dB
Transmitter and Dispersion Penalty	TDP		1	dB	Transmit on 20km SMF
Optical Waveform Diagram	ITU-T G.984.2					Figure 1

TRANSMITTER ELECTRICAL CHARACTERISTICS

Parameter	Min.	Typ.	Max.	Unit	Notes
Data Input Differential Swing	600		1600	mV	LVPECL input, AC coupled
Input Differential Impedance	90	100	110	Ω
Transmitter Disable Voltage - Low	0		0.8	V
Transmitter Disable Voltage - High	2.0		VCC	V
Transmitter Fault Alarm Voltage - Low	0		0.4	V
Transmitter Fault Alarm Voltage – High	2.4		VCC	V

RECEIVER OPTICAL CHARACTERISTICS

Parameter	Symbol	Min.	Max.	Unit	Notes
Operating Wavelength		1260	1360	nm
Sensitivity (BOL, Normal Temperature)	SEN		-31	dBm	PRBS 223-1+72CID@1.244Gbps BER≤1×10-10
Sensitivity (EOL, 0~70°C)	SEN		-30	dBm	PRBS 223-1+72CID@1.244Gbps BER≤1×10-10
Saturation Optical Power	SAT	-12		dBm
Dynamic Range		15		dB	Figure 2
Loss Of Signal De-assert Level			-33	dBm
Loss Of Signal Assert Level		-45		dBm
Loss Of Signal Hysteresis		0.5	6	dB
Receiver Reflectance			-12	dB

RECEIVER ELECTRIAL CHARACTERISTICS

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Data Output Voltage – Low（-Vcc）		-1.81		-1.62	V
Data Output Voltage – High（-Vcc）		-1.02		-0.88	V
Data Output Differential Swing		400		1600	mV	LVPECL output, DC coupled
Reset width	TRESET	16			bits
Reset-Low		0		0.4	V
Reset-High		2.4		Vcc	V
Receiver Amplitude Recovery	TRECOVERY			32	bits	Refer to the Reset signal falling edge
Signal Detect Assert Time				50	ns
Signal Detect De-assert Time				12.8	ns	Refer to the Reset signal rising edge
Signal Detect Voltage-Low		0		0.4	V
Signal Detect Voltage-High		2.4		Vcc	V
RSSI Trigger-Low		0		0.8	V
RSSI Trigger-High		2		Vcc	V
Optical Signal During Time	Tont	300			ns
RSSI Trigger width	TW	300		Tont-TD	ns
RSSI Trigger Delay	TD	0	6.4		ns
I2C Access Prohibited Time				500	μs

PIN DESCRIPTION

PIN	Name	Description	Notes
1	VEET	Transmitter Ground
2	TX Fault	Transmitter Fault Indication	High: abnormal; Low: normal
3	TX Disable	Transmitter Disable	High: transmitter disable; Low: transmitter enable
4	MOD-DEF2	Module Definition 2	The data line of two wire serial interface
5	MOD-DEF1	Module Definition 1	The clock line of two wire serial interface
6	MOD-DEF0	Module Definition 0	Connected to Ground in the transceiver
7	Reset	Receiver Reset	High: reset the receiver
8	SD	Signal Detect	High: signal detected; Low: loss of signal;
9	RSSI Trigger	RSSI Trigger for Transceiver A/D Conversion	High: enable RSSI A/D conversion
10	VEER	Receiver Ground
11	VEER	Receiver Ground
12	RD-	Inv. Receiver Data Out	LVPECL logic output, DC coupled
13	RD+	Receiver Data Out	LVPECL logic output, DC coupled
14	VEER	Received Ground
15	VCCR	Receiver Power
16	VCCT	Transmitter Power
17	VEET	Transmitter Ground
18	TD+	Transmit Data In	LVPECL logic input, AC coupled
19	TD-	Inv. Transmit Data In	LVPECL logic input, AC coupled
20	VEET	Transmitter Ground

DIGITAL DIAGNOSTIC MONITORING INTERFACE

Parameter	Range	Accuracy	Calibration	Note
Temperature	0 to 70°C	±3°C	Internal	1LSB = 1/256°C
Voltage	0 to 6.55V	±3%	Internal	1LSB = 0.1mV
Bias Current	0 to 100mA	±10%	Internal	1LSB = 2uA
TX Power	0 to 8dBm	±2dB	Internal	1LSB = 0.1uW
RX Power Monitor	-31 to -12dBm	±3dB	External	1LSB = 0.1uW Without Pluggable optical fiber