Cisco Compatible CWDM-SFP25G-xxxx-10 Quick Spec:

Part Number: CWDM-SFP25G-xxxx-10 CWDM-SFP25G-xxxx-10-EXT CWDM-SFP25G-xxxx-10-IND

Form Factor: SFP28

TX Wavelength: 1270-1330nm

Reach: 10km

Cable Type: SMF

Rate Category: 25GBase

Interface Type: CWDM

DDM: Yes

Connector Type: Dual-LC

Temperature: Commercial

Cisco Compatible CWDM-SFP25G-xxxx-10 Features

• Supports up to 24.33Gb/s and 25.78Gb/s bit rates

• Hot-Pluggable

• Duplex LC connectors

• 1271～1371nm CWDM DFB transmitter, PIN photo-detector

• SMF links up to 10km

• 2-wire interface for management specifications compliant with SFF 8472 digital diagnostic monitoring interface

• Single +3.3V power supply

• Power consumption<1.2W

• Temperature Range:

  • Standard: 0°C to +70 °C

  • Extended -5°C to +85 °C

  • Industrial -40°C to +85 °C

• RoHS compliant

  
  

  Cisco Compatible CWDM-SFP25G-xxxx-10 Applications

• 25GE-LR

• STM16/STM64 SONET/SDH network

• Fiber Channel FC1/2/4/8/10

• CPRI option 10 for mobile front haul

Product Description

FluxLight CWDM SFP+ transceiver is a very compact 25Gb/s optical transceiver module for serial optical communication applications at 25Gb/s. The JCSE2 SFP+ converts a 25Gb/s serial electrical data stream to 25Gb/s optical output signal and a 25Gb/s optical input signal to 25Gb/s serial electrical data streams. The high speed 25Gb/s electrical interface is fully compliant with SFI specification. The high performance 1271～1451nm CWDM DFB transmitter and high sensitivity PIN receiver provide superior performance for Ethernet applications at up to 10km links. The SFP+ Module compliance with SFF-8431, SFF-8432 and IEEE 802.3ae 25GBASE-LR. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472. The fully SFP compliant form factor provides hot pluggability, easy optical port upgrades and low EMI emission.

Cisco Compatible CWDM-SFP25G-xxxx-10 Absolute Maximum Ratings

Cisco Compatible CWDM-SFP25G-xxxx-10 Electrical Characteristics

(TOP = 0 to 70 °C, VCC = 3.135 to 3.465 Volts)

Note:

1. Connected directly to TX data input pins. AC coupling from pins into laser driver IC.

2. Per SFF-8431 Rev 3.0

3. Into 100 ohms differential termination.

4. 20%～80%

5. LOS is an open collector output. Should be pulled up with 4.7k – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.

   
   

   Cisco Compatible CWDM-SFP25G-xxxx-10 Optical Parameters

   (TOP = 0 to 70°C, VCC = 3.135 to 3.465 Volts)

   Parameter	Symbol	Min.	Typical	Max.	Unit	Note
   Transmitter Section:
   Center Wavelength	λc	λ-6.5		λ+6.5	nm
   spectral width	△λ			1	nm
   Average Optical Power	Pavg	-2.5		+5.5	dBm	1
   Laser Off Power	Poff			-30	dBm
   Extinction Ratio	ER	3.5			dB
   Transmitter Dispersion Penalty	TDP		3@10km		dB	2
   Relative Intensity Noise	Rin			-128	dB/Hz	3
   Receiver Section:
   Center Wavelength	λr	1260		1380	nm
   Receiver Sensitivity(AVG)	Sen			-13.5	dBm	4
   Los Assert	LOSA	-30		-	dBm
   Los Dessert	LOSD			-17	dBm
   Los Hysteresis	LOSH	0.5			dB
   Overload	Sat	2.0			dBm	5

   Note:

   1. Average power figures are informative only, per IEEE802.3ae.

   2. TWDP figure requires the host board to be SFF-8431compliant. TWDP is calculated using the Matlab code provided in clause 68.6.6.2 of IEEE802.3ae.

   3. 12dB reflection.

   4. Measured at 1310nm. ER>3.5dB, PRBS231-1 and BER better than or equal to 5E-5

   5. Receiver overload specified in OMA and under the worst comprehensive stressed condition.

      
      

      Cisco Compatible CWDM-SFP25G-xxxx-10 Timing Characteristics

      Parameter	Symbol	Min.	Typical	Max.	Unit
      TX_Disable Assert Time	t_off			10	us
      TX_Disable Negate Time	t_on			1	ms
      Time to Initialize Include Reset of TX_FAULT	t_int			300	ms
      TX_FAULT from Fault to Assertion	t_fault			100	us
      TX_Disable Time to Start Reset	t_reset	10			us
      Receiver Loss of Signal Assert Time	TA,RX_LOS			100	us
      Receiver Loss of Signal Deassert Time	Td,RX_LOS			100	us
      Rate-Select Chage Time	t_ratesel			10	us
      Serial ID Clock Time	t_serial-clock			100	kHz

      
      

      Cisco Compatible CWDM-SFP25G-xxxx-10 Pin Assignment

      Diagram of Host Board Connector Block Pin Numbers and Name

      
      

      

      
      

      Pin Function Definitions

      PIN #	Name	Function	Notes
      1	VeeT	Module transmitter ground	1
      2	Tx Fault	Module transmitter fault	2
      3	Tx Disable	Transmitter Disable; Turns off transmitter laser output	3
      4	SDL	2 wire serial interface data input/output (SDA)
      5	SCL	2 wire serial interface clock input (SCL)
      6	MOD-ABS	Module Absent, connect to VeeR or VeeT in the module	2
      7	RS0	Rate select0, optionally control SFP+ receiver. When high, input data rate >4.5Gb/ s; when low, input data rate <=4.5Gb/s
      8	LOS	Receiver Loss of Signal Indication	4
      9	RS1	Rate select0, optionally control SFP+ transmitter. When high, input data rate >4.5Gb/s; when low, input data rate <=4.5Gb/s
      10	VeeR	Module receiver ground	1
      11	VeeR	Module receiver ground	1
      12	RD-	Receiver inverted data out put
      13	RD+	Receiver non-inverted data out put
      14	VeeR	Module receiver ground	1
      15	VccR	Module receiver 3.3V supply
      16	VccT	Module transmitter 3.3V supply
      17	VeeT	Module transmitter ground	1
      18	TD+	Transmitter inverted data out put
      19	TD-	Transmitter non-inverted data out put
      20	VeeT	Module transmitter ground	1

      Note:

      1. The module ground pins shall be isolated from the module case.

      2. This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board.

      3. This pin shall be pulled up with 4.7K-10Kohms to VccT in the module.

      4. This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board.

SFP Module EEPROM Information and Management

    The FluxLight Series SFP modules implement the 2-wire serial communication protocol as defined in the SFP -8472.

The serial ID information of the SFP modules and Digital Diagnostic Monitor parameters can be accessed through the I2C interface at address A0h and A2h. The memory is mapped in Table 1. Detailed ID information (A0h) is listed in Table

2. And the DDM specification at address A2h. For more details of the memory map and byte definitions, please refer to the SFF-8472, The DDM parameters have been internally calibrated.

Table 1. Digital Diagnostic Memory Map (Specific Data Field Descriptions)

Table 2 - EEPROM Serial ID Memory Contents (A0h)

Cisco Compatible CWDM-SFP25G-xxxx-10 Digital Diagnostic Monitor Characteristics

Regulatory Compliance

The AOSP-25G-10-CXX(1271~1451) complies with international Electromagnetic Compatibility (EMC) and international safety requirements and standards (see details in Table following).

Recommended Circuit

Recommended Host Board Power Supply Circuit

Recommended High-speed Interface Circuit

Mechanical Dimensions

Licensing

The following U.S. patents are licensed by Finisar to FluxLight, Inc.:

U.S. Patent Nos: 7,184,668, 7,079,775, 6,957,021, 7,058,310, 6,952,531, 7,162,160, 7,050,720