GPON ONU SFF For FTTH Sinovo Telecom

The GPON ONU Transceiver is designed for Gigabit-capable Passive Optical Network（GPON）transmission. The module incorporates 1310nm burst-mode transmitter and 1490nm continuous-mode receiver.

The transmitter section uses a 1310nm DFB laser and an integrated BM laser driver which designed to perform very small burst enable/disable delay time. The laser driver also includes digital APC and temperature compensation circuit, which are used for keeping the launch optical power and extinction ratio constant over temperature and aging.

The receiver section uses an integrated 1490nm APD photodiode and preamplifier mounted together. It has the function that indicates receiver signal-detected status (active high). An integrated WDM coupler can separate 1490nm input light and 1310nm output light.

The metallic package guarantees excellent EMI and EMC characteristics, which totally comply with international relevant standards.

l  Features

l  Optical transceiver for Gigabit-capable Passive Optical Networks (GPON) ONU side

l  Integrated Single fiber bi-directional optical subassembly

l  SFF 2×10 Package with SC Receptacle/SC Pigtail

l  1310nm DFB laser Burst-mode Transmitter and 1490nm APD Continuous receiver(with WDM)

l  +3.3V single power supply ,Low power consumption

l  0 to 70℃ operating case temperature

l  Class 1 Laser eye safety

l  Excellent EMI and EMC characteristics

l  DDM Function implemented

l  Compliant with RoHs

l  Standard

l  ITU-T G.984.2 ClassB+;

l  Small Form Factor Transceiver Multisource Agreement July 5,2000

l  Compliant with SFF-8472 v9.5

l  Absolute Maximum Ratings

Table 1- Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Supply Voltage	Vcc	-0.5	-	+3.6	V
Storage Temperature	TS	-40	-	85	°C
Operating Relative Humidity	RH	+5	-	+95	%
Receiver Damage Threshold		-5	-	-	dBm
Lead Solder Temperature		-	-	260	°C
Lead Solder Duration		-	-	10	S
Fiber Yield Strength		-	-	0.5	kgf
Fiber Bend Radius		30	-	-	mm -

l  Recommended Operating Conditions

Table 2- Recommended operating Conditions

Parameter		Symbol	Min.	Typ.	Max.	Units	Notes
Operating Case Temperature		TC	0	-	70	°C
Power Supply Voltage		VCC	3.14	3.3	3.46	V
Power Supply Current		ICC	-	-	300	mA
Data Rate	Transmitter		-	1244.16	-	Mbps
	Receiver			2488.32

l  Electrical Characteristics

Table 3- Electrical Characteristics

Parameter		Symbol	Min.	Typ.	Max.	Units	Notes
Differential Data Input Swing		Vin p-p	200	-	2400	mV	1
Input Differential Impedance		RIN	80	100	120	Ω
Tx_BEN	Normal Operation	VOH	2.0	-	VCC+0.5	V
	Laser Disable	VOL	GND	-	GND+0.8	V
Tx_ Fault	Transmitter Fault	VOH	2.0	-	VCC+0.5	V
	Normal Operation	VOL	GND	-	GND+0.8	V
Differential Date Output Swing		Vout p-p	750	900	1050	mV	2
Rx_LOS	Los Signal	VOH	2.0	-	VCC+0.5	V
	Normal Operation	VOL	GND	-	GND+0.8	V

Note:

1.     Internally DC coupled, input termination may be required for CML or LVPECL applications. 

2.     Internally AC coupled, CML differential output stage.

l  Optical Characteristics

Table 4-Optical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Transmitter
Data Rate			1244.16		Mbps
Average Output Power	P0UT	0		5	dBm	1
Extinction Ratio	ER	9	-	-	dB	2
P0ut@TX Disable Asserted	P0UT	-	-	-45	dB
Mean Wavelength	λ	1290	1310-	1330	nm
Spectral Width(RMS)	∆λ	-	-	1	nm
Side Mode Suppression Ratio		30	-	-	dB
Burst turn on/off time	Ton/Toff	-	-	12	nS	3
Rise/Fall Time (20%~80%)	Tr/Tf			260	ps
RIN15OMA		-	-	-115	dB/Hz
Optical Return Loss Tolerance		-	-	15	dB
Maximum reflectance		-	-	-12	dB	λ=1310nm
Transmitter dispersion penalty	TDP	-	-	1	dB
Eye Diagram	Compliant with ITU-T G.984.2					4
Receiver
Data Rate			2488.32		Mbps
Receiver Power	Pin		-	-28	dBm	5
Centre Wavelength	λC	1480	1490	1500	nm
Receiver Overload	Rsens,high	-8	-	-	dBm	5
Receiver Reflectance	RX_r	-	-	-20	dB	λ=1490nm
Signal Detect De-Assert	SDD	-	-	-40	dB
Signal Detect Assert	SDA	-30	-	-	dB
SD Hysteresis		0.5		-	dB
1310nm Tx to 1490nm Rx Crosstalk		-	-	-47	dB
1555nm Rx to 1490nm Isolation		30	-	-	dB

Note：

1.       Coupled into 9/125 SMF.

2.       Measured with PRBS 223-1 test pattern @1.25Gbps.

3.       See Figure 1

4.       See Figure 1

5.       Measured with PRBS 223-1 test pattern @2.5Gbps with Tx on,ER=10dB,BER=10E-12.

Figure1, Burst_mode Receiver Dynamic range in GPON system

Figure2, Mask of diagram

l  Digital Diagnostic Memory Map

Figure 3, Memory Map
Pin arrangement

Figure 4, Functional block diagram

Table 5-Pin Function Definitions

Pin	Name	Description	Note
1	NC	No connect
2	NC	No connect
3	Rx GND	Receiver ground
4	NC	No connect
5	NC	No connect
6	Rx GND	Receiver ground
7	Rx VCC	Receiver power supply
8	Rx_SD	Signal detect output, LVTTL, internally pull up.	1
9	RD-	Receiver data output-, AC coupled internally
10	RD+	Receiver data output+, AC coupled internally
11	Tx VCC	Transmitter power supply
12	Tx GND	Transmitter ground
13	Tx_BEN	Transmitter burst mode control, LVTTL, internal pull-up	2
14	TD+	Data input+ ,DC coupled internally
15	TD-	Data input- ,DC coupled internally
16	Tx GND	Transmitter ground
17	SCL	I2C Serial Clock（LVTTL）
18	SDA	I2C Serial Data （LVTTL）
19	Tx-Fault	Transmitter Fault Indication, LVTTL, internal pull-up	3
20	Tx-SD	Transmitter State Indication, LVTTL, internal pull-up	4

Note:

1.       RX_SD is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates loss of signal. In the low state, the output will be pulled to less than 0.8V.

2.       TX_BEN input is used to shut down the laser output per the state table below. It is pulled up

within the module with a 4.7~ 10K resistor.

3.       TX Fault is open collector output which should be pulled up externally with a 4.7K ~10KΩ resistor on the host board to voltage between 2.0V and V_CC+0.3V. Logic 0 indicates normal operation; logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V.

4.       TX Signal Detect, TX Active State: High.

l  BlockDiagram

Figure 5, Functional block diagram

Typical Application Circuit

Figure 6, Typical application circuit

l  Mechanical Diagram

Figure 8, SC Connector Package outline

Figure 9, Pigtail Connector Package outline

l  Ordering information

Table 6-Ordering information

Part No.	Data Rate （Tx/Rx）	Wavelength (Tx/Rx)	Optical Interface	DDMI	Temp.
SGNH-3142-20BS	1.25/2.5G	1310/1490nm	SC[Notes1]	YES	0~+70℃
SGNH-3142-20PBS	1.25/2.5G	1310/1490nm	Pigtail[Notes2]	YES	0~+70℃

Note:

1.       See Figure 8.

2.       Pigtail series is with pigtail, the fiber length is customized .See Figure 7.

l  Regulatory Compliance

Feature	Test Method	Performance
Electrostatic Discharge (ESD) to the Electrical Pins	MIL-STD-883E Method 3015.7	Class 1 (>1.5kV) – Human Body Model
Electrostatic Discharge (ESD) Immunity	IEC61000-4-2	Class 2(>4.0kV)
Electromagnetic Interference (EMI)	CISPR22 ITE Class B EN55022 Class B	Compliant with standards
Immunity	IEC61000-4-3 Class 2 EN55024	Typically show no measurable effect from a 3V/m field swept from 80 to 1000MHz applied to the transceiver without a chassis enclosure.
Eye Safety	FDA 21 CFR 1040.10 and 1040.11	Compliant with Class 1 laser product
	UL
	TUV EN 60825-1

l  Notice:

SINOVO reserves the right to make changes to or discontinue any optical link product or service identified in this publication, without notice, in order to improve design and/or performance. Applications that are described herein for any of the optical link products are for illustrative purposes only. SINOVO makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification.

l  Contact Information

Shenzhen Sinovo Telecom Co. Ltd

Website:www.sinovocorp.com  Email:sales@sinovocorp.com

Tel:+86(0)0755-3295 9919 Fax:+86(0)755 3295 9918

Head Quarter:11/F,Taibang Technology Building,Gaoxin South 4th,Science and Technology Park South,Nanshan,Shenzhen,China 518040