GPON SFP OLT Transceiver

GPON SFP OLT Transceiver,1490nm 2.5Gbps continuous-mode transmitter with DFB laser,1310nm 1.25Gbps burst-mode receiver with APD-TIA.Gigabit Passive Optical Networks (G-PON) – OLT side

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INFORMATION

Features

● Single Fiber Transceiver with single mode SC receptacle

● 1490nm continuous-mode transmitter with DFB laser

● 1310nm burst-mode receiver with APD-TIA

● Can reach 20km transmission distance

● Single 3.3V power supply

● Reset burst-mode receiver design

● Burst mode signal detect output which is LVTTL compatible.

● Burst mode received signal strength indication (RSSI) output

● Complies with ITU-T G984.2 Class C+

● Digital diagnostic interface compliant with SFF-8472 Rev 9.4 ,

● Complies with RoHS directive (2002/95/EC)Operating case temperature:

Standard : 0 to +70°C

Applications

● Gigabit Passive Optical Networks (G-PON) – OLT side

Description

The BD-4321S-C2CDA transceiver is the high performance module for single fiber by using 1490nm continuous-mode transmitter and 1310nm burst-mode receiver. It is optical line terminal(OLT) for ITU-T G984.2. The optical transceiver is compliant with the Small Form- Factor Pluggable (SFP) Multi-Source Agreement (MSA).

The transmitter section uses a 1490nm DFB LD with automatic power control (APC) function and temperature compensation circuitry to ensure stable extinction ratio over all operating temperature range. and is ClassⅠlaser compliant IEC825 and CDRH standards.The receiver has a hermetically packaged burst-mode APD-TIA (trans-impedance amplifier) pre-amplifier and a burst-mode limiting amplifier with LVPECL compatible differential outputs.

The receiver also includes the function of burst mode signal detect output and fast RSSI output which is enabled by a trigger. When the burst optical power is on, the receiver outputs high level; when the burst optical power is off, the receiver outputs low level. Fast RSSI function can satisfy more severe timing demand to monitor the power from any ONU.

Absolute Maximum Ratings

Parameter	Symbol	Min.	Max.	Units	Notes
Storage Temperature	Tst	-40	+85	°C	–
Operating Case Temperature	Tc	0	70	°C	–
Operating Humidity	RH	5	90	%	Non-condensing
Input Voltage	–	GND	Vcc	V	–
Power Supply Voltage	Vcc-Vee	0	3.6	V	–

Recommended Operating Conditions

Parameter		Symbol	Min	Typical	Max	Unit
Operating Case Temperature	Standard	Tc	0	–	+70	°C
Power Supply Voltage		Vcc	3.13	3.3	3.47	V
Power Supply Current		Icc	–	–	500	mA

Optical and Electrical Characteristics

Parameter		Symbol	Min	Typical	Max	Unit	Notes
Transmitter
Data Rate				2.5		Gb/S
Centre Wavelength		λc	1480		1500	nm
Spectral Width		∆λ		0.4	1	nm
Side Mode Suppression Ratio		SMSR	30			dB
Average Output Power		Pout	3		7	dBm	1
Extinction Ratio		ER	8.2			dB
Average Launch Power-OFF Transmitter		Poff			-40	dBm
Optical Eye Diagram		Compliant with G984.2
Optical Rise/Fall Time (20%~80%)		tr/tf			160	ps
Data Input Swing Differential		V_IN	200		2400	mV	2
Input Differential Impedance		Z_IN	90	100	110	Ω
TX Disable	Disable		2.0		Vcc	V
TX Disable	Enable		0		0.8	V
TX Fault	Fault		2.0		Vcc	V
TX Fault	Normal		0		0.8	V
Receiver
Data Rate				1.25		Gb/S
Centre Wavelength		λc	1260		1360	nm
Receiver Sensitivity		Sen			-30	dBm	3
Receiver Overload		Sat	-12			dBm	3
Receiver CID Tolerance			72			Bit
Receiver Reflectance					-20	dB
Data Output Voltage – High		VOH	VccR -1.05		VccR – 0.85	V	4
Data Output Voltage – Low		VOL	VccR -1.84		VccR – 1.60	V	4
Burst Detect De-assert		BSD_D	-45			dBm
Burst Detect Assert		BSD_A			-32	dBm
Burst Detect Hysteresis			1		6	dBm
BRST_Det High		V_DET H	2.4		VCC	V
BRST_Det Low		V_DETL	0		0.4	V
Reciever Power DDM (RSSI) Error		RXDDM			+/-3	dBm	5