1.25G SFP Transceiver Module , Optical Transceiver Module Dual Fiber 1310nm for 10KM

1.25G SFP Transceiver Module , Optical Transceiver Module Dual Fiber 1310nm for 10KM

 

Product Features

●Supports 1.25Gb/s bit rates

●Duplex LC connector

●Hot pluggable

●1550nm DFB transmitter, PIN photo-detector

●Applicable for 80km SMF connection

●Digital Diagnostic Monitor Interface

●Low EMI and excellent ESD protection

●Compliant with SFP MSA and SFF-8472

●+3.3V single power supply

●Operating case temperature:

Commercial: -20 to 75 °C

Industrial:-40 to 85 °C

 

Applications

●Gigabit Ethernet 1000BASE-ZX

●SONET/SDH

●Other optical transmission systems

 

Product Descriptions

The transceivers ZBC3220 is high performance, cost effective modules supporting 1250Mbps data-rate and 80km transmission distance with SMF. This transceiver consists of three sections: a DFB laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.

 

Functional Diagram

 

Absolute Maximum Ratings

Parameter	Symbol	Min.	Max.	Unit	Note
Supply Voltage	Vcc	-0.5	4.0	V
Storage Temperature	TS	-40	85	°C
Relative Humidity	RH	0	85	%

 

Note: Stress in excess of the maximum absolute ratings can cause permanent damage to the transceiver.

 

General Operating Characteristics

Parameter	Symbol	Min.	Typ	Max.	Unit	Note
Data Rate	DR		1.25		Gb/s
Supply Voltage	Vcc	3.13	3.3	3.47	V
Supply Current	Icc5			220	mA
Operating Case Temp.	Tc	0		70	°C
	TI	-40		85

 

 

Electrical Characteristics (TOP(C) = -20 to 75 ℃, TOP(I) =-40 to 85 ℃,VCC = 3.13 to 3.47 V)

Parameter	Symbol	Min.	Typ	Max.	Unit	Note
Transmitter
Differential data input swing	VIN,PP	300		1600	mVpp	1
Tx Disable Input Voltage-High	VIH	2		Vcc	V
Tx Disable Input Voltage-Low	VIL	0		0.8
Tx Fault Output Voltage-High	VOH	Vcc-0.5		Vcc+0.3	V	2
Tx Fault Output Voltage-Low	VOL	0		0.5
Input differential impedance	Zin		100		Ω
Receiver
Differential data output swing	Vout,pp	500		1000	mVpp	3
Output differential impedance	ZOUT	90		110	Ω
LOS asserted	VLOS_F	VCC-0.5		Vcc+0.3	V	2
LOS de-asserted	VLOS_N	0		+0.8

 

Notes:

1.TD+/- are internally AC coupled with 100Ω differential termination inside the module.

2. Tx Fault and Rx LOS are open collector outputs, which should be pulled up with 4.7k to 10kΩ resistors on the host board. Pull up voltage between 2.0V and Vcc+0.3V.

3. RD+/- outputs are internally AC coupled, and should be terminated with 100Ω (differential) at the user SERDES..

 

 

Optical Characteristics (TOP(C) = -20 to 75 ℃, TOP(I) =-40 to 85 ℃,VCC = 3.13 to 3.47 V)

Parameter	Symbol	Min.	Typ	Max.	Unit		Note
Transmitter
Operating Wavelength	λ	1530	1550	1570	nm
Ave. output power (Enabled)	PAVE	0		+5	dBm		1
Extinction Ratio	ER	8.2			dB		1
RMS spectral width	Δλ			1	nm
Rise/Fall time (20%~80%)	Tr/Tf			0.28	ns		2
Total Jitter	TJ			56.5	ps		2
Output Optical Eye	ITU-T G.957 Compliant
Receiver
Operating Wavelength	λ	1270		1610	nm
Receiver Sensitivity(ER=4.5)	PSEN1			-25	dBm	3
Min. Overload	PMAX			-3	dBm	3
LOS Assert	Pa	-35			dBm
LOS De-assert	Pd			-27	dBm
LOS Hysteresis	Pd-Pa	0.5		5	dB

 

Notes:

Note 1) Measured at 1250 Mb/s with PRBS 2^{23 – 1} NRZ test pattern.

Note 2) Unfiltered, measured with a PRBS 2^23-1 test pattern @1250Mbps

Note 3) Measured at 1250 Mb/s with PRBS 2^{23 – 1} NRZ test pattern for BER < 1x10^-10

 

 

 

Pin Defintion And Functions

 

 

 

 

 

 

Pin	Symbol	Name/Description	Notes
1	VeeT	Tx ground
2	Tx Fault	Tx fault indication, Open Collector Output, active “H”	1
3	Tx Disable	LVTTL Input, internal pull-up, Tx disabled on “H”	2
4	MOD-DEF2	2 wire serial interface data input/output (SDA)	3
5	MOD-DEF1	2 wire serial interface clock input (SCL)	3
6	MOD-DEF0	Model present indication	3
7	Rate select	No connection
8	LOS	Rx loss of signal, Open Collector Output, active “H”	4
9	VeeR	Rx ground
10	VeeR	Rx ground
11	VeeR	Rx ground
12	RD-	Inverse received data out	5
13	RD+	Received data out	5
14	VeeR	Rx ground
15	VccR	Rx power supply
16	VccT	Tx power supply
17	VeeT	Tx ground
18	TD+	Transmit data in	6
19	TD-	Inverse transmit data in	6
20	VeeT	Tx ground

 

Notes:

1.When high, this output indicates a laser fault of some kind. Low indicates normal operation. And should be pulled up with a 4.7 – 10KΩ resistor on the host board.

2. TX disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7 – 10KΩ resistor. Its states are:

Low (0 – 0.8V): Transmitter on (>0.8, < 2.0V): Undefined

High (2.0V~Vcc+0.3V): Transmitter Disabled Open: Transmitter Disabled

3. Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10KΩ resistor on the host board. The pull-up voltage shall be between 2.0V~Vcc+0.3V.

Mod-Def 0 has been grounded by the module to indicate that the module is present

Mod-Def 1 is the clock line of two wire serial interface for serial ID

Mod-Def 2 is the data line of two wire serial interface for serial ID

4.When high, this output indicates loss of signal (LOS). Low indicates normal operation.

5.RD+/-: These are the differential receiver outputs. They are AC coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board.

6.TD+/-: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board.

 

EEPROM Section

 

The optical transceiver contains an EEPROM. It provides access to sophisticated identification information that describes the transceiver 's capabilities, standard interfaces, manufacturer, and other information. The serial interface uses the 2-wire serial CMOS EEPROM protocol defined for the ATMEL AT24C01A/02/04 family of components. When the serial protocol is activated, the host generates the serial clock signal (SCL, Mod Def 1). The positive edge clocks data into those segments of the EEPROM that are not write protected within the SFP transceiver. The negative edge clocks data from the SFP transceiver. The serial data signal (SDA, Mod Def 2) is for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially.

The Transceiver provides diagnostic information about the present operating conditions. The transceiver generates this diagnostic data by digitization of internal analog signals. Calibration and alarm/warning threshold data is written during device manufacture. Received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring all are implemented. The diagnostic data are raw A/D values and must be converted to real world units using calibration constants stored in EEPROM locations 56 – 95 at wire serial bus address A2h. The digital,Diagnostic memory map specific data field define as following:

 

2 wire address LOLOOOOx (AOh) 2 wire address LOLOOOLx (A2h)

 

Digital Diagnostic Specifications

 

The transceivers can be used in host systems that require either internally or externally calibrated digital diagnostics.

 

Parameter	Symbol	Units	Min.	Max.	Accuracy	Note
Transceiver temperature	DTemp-E	ºC	-45	+90	±5ºC	2
Transceiver supply voltage	DVoltage	V	3.0	3.6	±3%
Transmitter bias current	DBias	mA	2	80	±10%	3
Transmitter output power	DTx-Power	dBm	-20	-13	±3dB
Receiver average input power	DRx-Power	dBm	-31	0	±3dB

 

Notes:

1.Support Internal/ External Calibration

2.When Operating temp.=0~70 ºC,the range will be min=-5,Max=+75.

3. The accuracy of the Tx bias current is 10% of the actual current from the laser driver to the laser

 

 

Typical Interface Circuit

 

Recommended Board Layout Hole Pattern

 

Package Dimensions