DCN-SFP-FS-20

The SFP transceiver is high performance, cost effective module supporting 155Mbps and 20km transmission distance with SMF(9/125μm).

General Details
The SFP transceiver is high performance, cost effective module supporting 155Mbps and 20km transmission distance with SMF(9/125μm).

The transceiver consists of two sections: a 1310nm FP laser transmitter, a PIN photodiode integrated with a trans-impedance amplifier (TIA). The transceiver satisfies class1 laser safety requirements.

The transceiver is compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.

Key Features and Benefits
  •  Up to 155Mbps data rate
  • Single LC receptacle optical interface compliant
  • Single +3.3V power supply
  • DDM function implemented, Internal calibration
  • Hot-pluggable
  • Receiver Loss of Signal Output
  • AC coupling of PECL signals
  • Serial ID module on MOD(0-2)
  • International Class 1 laser safety certified
  • Transmitter disable input
  • Operating temperature range: -40℃ ~ 85℃
  • RoHS Compliance
  • Fast Ethernet
  • SDH/STM-1,SONET/OC-3
  • Metropolitan area network
  • Other optic link
  • Compliant with SFP MSA (INF-8074i)
  • Compliant with SFF-8472 v9.5
  • Compliant with ITU-T G.957 STM-1
Technical Specification
Module Block Diagram

Absolute Maximum Ratings

ParameterSymbolMinMaxUnit
Power Supply VoltageVcc-0.54V
Storage Temperature RangeTs-4085°C
Relative HumidityRH595%

 

 

Recommended Operating Conditions

ParameterSymbolMinTypicalMaxUnit
Case Operating Temperature RangeTc-4085°C
Power Supply VoltageVcc3.143.33.47V
Supply CurrentITX+RX300mA
Differential Input VoltageVIN4002000mV
Differential output VoltageVOUT600800mV
Data Rate155.52Mbps

Mechanical Dimensions

 

Regulatory Compliance

TSC SFP transceiver is designed to be Class 1 Laser safety compliant and is certified per the following standards.

AgencyStandardCertificate /Comments
ISO9001GB/T 19001-2008/ISO 9001:200801 100 1532944
ISO14001ISO 14001:201501 104 1532944
TUV-MARKEN 60950-1:2006+A11+A1+A12+A2R 50251968
CE-EMCEN 55022: 2010AE 50319239 0001
EN 55024: 2010
REACHREACH SVHC 1691150009645a3 002
FCCFCC Rules and Regulations Part 15 Subpart B Class BMTi160830E86C
RoHS2011/65/EU1150009645a1 001

Optical and Electrical Characteristics

ParameterSymbolMinTypicalMaxUnitNotes
Transmitter Characteristics
Center Wavelength Rangeλc126013101360nmFP-LD
Spectral WidthΔλ4nmFP-LD
Launch Optical PowerPout-15-8dBm20km 1310nm FP-LD
Extinction RatioEX10dB
Transmitter jitterTJ0.1UIp-p1
Relative Intensity NoiseRIN-120dB/Hz2
Eye DiagramComplies with ITU-T G.957 STM-1 eye masks when filtered
Optical Rise/Fall TimeTrise/Tfall3ns3
Receiver Characteristics
Receiver SensitivityS-32dBm4
Receiver OverloadPin-8dBm
Loss of Signal-AssertedLOS-A-45dBm
Loss of Signal-DeassertedLOS-D-32dBm
LOS Hysteresis0.535dB5

Notes:

  1. For the jitter measurements, the device was driven with SONET OC-3 data pattern with 223-1 PBRS payload
  2. RIN is the laser noise, integrated over a specified bandwidth, measured relative to average optical power with 12dB return loss. For multimode application, the RIN is better than -117dB/Hz.
  3. Optical transition time is the time interval required for the rising or falling edge of an optical pulse to transition between the 20% and 80% amplitudes relative to the logical 1 and 0 levels.
  4. Measured with a PRBS 223-1 test pattern, @155Mb/s, EX=10dB, BER<10-10.
  5. The LOS Hysteresis to minimize “chatter” on the output line. In principle, Hysteresis alone does not guarantee chatter-free operation.

Pin Descriptions

PinSignal NameDescriptionPlug Seq.Notes
1VeeTTransmitter Ground1
2Tx_FaultTransmitter Fault Indication31
3Tx_DisableTransmitter Disable32
4MOD_DEF(2)SDA Serial Data Signal33
5MOD_DEF(1)SCL Serial Clock Signal33
6MOD_DEF(0)TTL Low33
7Rate SelectNot Connected3
8LOSLoss of Signal34
9VeeRReceiver ground1
10VeeRReceiver ground1
11VeeRReceiver ground1
12RD-Inv. Received Data Out35
13RD+Received Data Out35
14VeeRReceiver ground1
15VccRReceiver Power Supply2
16VccTTransmitter Power Supply2
17VeeTTransmitter Ground1
18TD+Transmit Data In36
19TD-Inv. Transmit Data In36
20VeeTTransmitter Ground1

Notes:

  1. Tx Fault is open collector output which should be pulled up with a 4.7kΩ~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+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.
  2. Tx Disable input is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7kΩ~10kΩ resistor. Its states are:

Low (0 to 0.8V):              Transmitter on

Between (>0.8V, < 2.0V):      Undefined

High (2.0 to 3.47V):           Transmitter Disabled

Open:                       Transmitter Disabled

  1. Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7kΩ~10kΩ resistor on the host board to supply less than VccT+0.3V or VccR+0.3V.

Mod-Def 0 is 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.

  1. LOS is an open collector output which should be pulled up with a 4.7kΩ~10kΩ resistor. Pull up voltage between 2.0V and Vcc+0.3V. Logic 1 indicates loss of signal; Logic 0 indicates normal operation. In the low state, the output will be pulled to less than 0.8V.
  2. RD-/+: These are the differential receiver outputs. They are internally AC-coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES.
  3. TD-/+: These are the differential transmitter inputs. They are internally 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 host board.
Order Information
Part NumberProduct Description
DCN-SFP-FS-20SFP, 155Mbps, 1310nm, SM 20km, -40ºC~85ºC, With DDM