10Gb/s DWDM SFP+ 80km Transceiver

10G DWDM transceivers include an APD diode and temperature stabilized DFB-EML transmitter. Digital diagnostic functions are available via an I2C.This module is designed for single mode fiber and operates at a nominal wavelength of 100GHz ITU Grid, C Band DWDM wavelength.

Features  
●  Up to 11.3Gbps Data Links
●  Up to 80km transmission on SMF
●  DWDM EML Laser and APD receiver
●  Metal enclosure, for lower EMI
●  2-wire interface with integrated Digital Diagnostic monitoring
●  Hot-pluggable SFP+ footprint
●  Compliant to SFP+ SFF-8431 and SFF-8432
●  Specifications compliant with SFF 8472
●  Compliant with SFP+ MSA with LC connector
●  Single 3.3V power supply
●  Case operating temperature range:0°C to 70°C  
● Power dissipation < 1.5W

Standard
● Compliant to SFF-8431
● RoHS Compliant.

Product Selection

C-band λc Wavelength Guide Pin Descriptions

Absolute Maximum Ratings

Recommended Operating Conditions

Optical Characteristics

Notes:

1. Output power is power coupled into a 9/125 mm single-mode fiber.

2. Corresponds to approximately 0.8 nm.

3. Measured with a PRBS 231-1 test pattern, @10.325Gb/s, BER<10-12.

Electrical Characteristics

Notes:

1. Connected directly to TX data input pins. AC coupled thereafter.

2. Or open circuit.

3. Into 100 ohms differential termination.

4. These are unfiltered 20-80% values

5. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.

Pin Descriptions

Pin out of Connector Block on Host Board

Notes:

1. Circuit ground is internally isolated from chassis ground.

2. TFAULT is an open collector/drain output, which should be pulled up with a 4.7k – 10k Ohm’s resistor on the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V.A high output indicates a transmitter fault caused by either the TX bias current or the TX output power exceeding the preset alarm thresholds. A low output indicates normal operation. In the low state, the output is pulled to <0.8V.

3. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

4. Should be pulled up with 4.7kΩ- 10kΩ host board to a voltage between 2.0V and 3.6V. MOD_ABS pulls line low to indicate module is plugged in.

5. Internally pulled down per SFF-8431 Rev 4.1.

6. LOS is open collector output. It should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

Digital Diagnostic Functions

10G DWDM transceivers support the 2-wire serial communication protocol as defined in the SFP+ MSA.

The standard SFP serial ID provides access to identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer, and other information.

Additionally, SFP+ transceivers provide a unique enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage. It also defines a sophisticated system of alarm and warning flags, which s end-users when particular operating parameters are outside of a factory set normal range.

The SFP+ MSA defines a 256-byte memory map in EEPROM that is accessible over a 2-wire serial interface at the 8-bit address 1010000X (A0h). The digital diagnostic monitoring interface makes use of the 8-bit address 1010001X (A2h), so the originally defined serial ID memory map remains unchanged.

The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed through a 2-wire serial interface. When the serial protocol is activated, the serial clock signal (SCL, Mod Def 1) is generated by the host. The positive edge clocks data into the SFP transceiver into those segments of the E2PROM that are not write-protected. The negative edge clocks data from the SFP transceiver.  The serial data signal (SDA, Mod Def 2) is bi-directional 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.

Host - Transceiver Interface Block Diagram

Outline Drawing (mm)

Regulatory Compliance

Application  

● 10G Ethernet 

● 10G SONET/SDH, OTU2/2e and 10G FC