XZ-1000 Base SX

1.25Gb/s RoHS Compliant Pluggable 850nm Multi-mode SFP Transceiver

SFP 1.25G 850nm 550M

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Product Features

  • Up to 1.25Gb/s data links
  • Duplex LC connector
  • Hot-pluggable SFP footprint
  • 850nm VCSEL laser transmitter
  • RoHS compliant and Lead Free
  • Up to 550m on 50/125um MMF; Up to 500m on 62.5/125um MMF
  • Metal enclosure for lower EMI
  • Single +3.3V power supply
  • Low power dissipation <800mW
  • Commercial and industrial operating temperature optional
  • SFP MSA SFF-8074i Compliant

Applications

  • 1000Base-SX
  • 1x Fibre Channel

General

SFP 1.25G 850nm 550M Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). The SFP transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps/1.063Gbps and 500m transmission distance with MMF. They are RoHS compliant and lead-free.

Product Selection

Part Number Operating Temperature DDMI
SFP 1.25G SR Commercial No
SFP 1.25G SR Commercial Yes
SFP 1.25G SR Industrial No
SFP 1.25G SR Industrial Yes

Regulatory Compliance

  • ESD to the Electrical PINs: compatible with MIL-STD-883 Method 3015
  • ESD to the Duplex LC Receptacle: compatible with IEC 61000-4-2
  • Immunity compatible with IEC 61000-4-3
  • EMI compatible with FCC Part 15 Class B, EN55022 Class B (CISPR 22B), VCCI Class B
  • Laser Eye Safety compatible with FDA 21CFR 1040.10 and 1040.11, EN60950, EN (IEC) 60825-1,2
  • RoHS compliant with 2002/95/EC 4.1&4.2, 2005/747/EC


Pin Symbol Name/Description Ref.
1 VeeT Transmitter Ground (Common with Receiver Ground) 1
2 TX Fault Transmitter Fault.
3 TX Disable Transmitter Disable. Laser output disabled on high or open. 2
4 MOD_DEF(2) Module Definition 2. Data line for Serial ID. 3
5 MOD_DEF(1) Module Definition 1. Clock line for Serial ID. 3
6 MOD_DEF(0) Module Definition 0. Grounded within the module. 3
7 Rate Select No connection required
8 LOS Loss of Signal indication. Logic 0 indicates normal operation. 4
9 VeeR Receiver Ground (Common with Transmitter Ground) 1
10 VeeR Receiver Ground (Common with Transmitter Ground) 1
11 VeeR Receiver Ground (Common with Transmitter Ground) 1
12 RD- Receiver Inverted DATA out. AC Coupled
13 RD+ Receiver Non-inverted DATA out. AC Coupled
14 VeeR Receiver Ground (Common with Transmitter Ground) 1
15 VccR Receiver Power Supply
16 VccT Transmitter Power Supply
17 VeeT Transmitter Ground (Common with Receiver Ground) 1
18 TD+ Transmitter Non-Inverted DATA in. AC Coupled.
19 TD- Transmitter Inverted DATA in. AC Coupled.
20 VeeT Transmitter Ground (Common with Receiver Ground) 1

Notes:

  1. Circuit ground is internally isolated from chassis ground.
  2. Laser output disabled on TX Disable >2.0V or open, enabled on TX Disable <0.8V.
  3. Should be pulled up with 4.7k – 10k ohms on host board to a voltage between 2.0V and 3.6V. MOD_DEF(0) pulls line low to indicate module is plugged in.
  4. LOS is open collector output. Should be pulled up with 4.7k – 10k ohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

Pin-out of Connector Block on Host Board

Recommend Circuit Schematic

 

Absolute Maximum Ratings

Parameter Symbol Min Typ Max Unit Ref.
Maximum Supply Voltage Vcc -0.5 - +4.0 V
Storage Temperature TS -40 - +85 °C
Operating Humidity RH 5 - 95 %

Recommended Operating Conditions

Parameter Symbol Min Typ Max Unit Ref.
Power Supply Voltage Vcc 3.13 3.30 3.47 V
Power Supply Current Icc - - 250 mA
Case Operating Temperature (Commercial) Tc 0 - +70 °C 1
Case Operating Temperature (Industrial) TI -40 - +85 °C 2
Data Rate (Gigabit Ethernet) - - 1.25 - Gbps
Data Rate (Fibre Channel) - - 1.063 - Gbps
50/125um MMF Lmax - - 550 m

Notes:

  1. For commercial class product.
  2. For industrial class product.

Electrical Characteristics (TOP=25°C, Vcc=3.3V)

Transmitter
Parameter Symbol Min Typ Max Unit Ref.
Input differential impedance Rin - 100 - Ω 1
Single ended data input swing Vin, pp 250 - 1200 mV
TX Disable-High - Vcc – 1.3 - Vcc V
TX Disable-Low - Vee - Vee+ 0.8 V
TX Fault-High - Vcc-0.5 - Vcc V
TX Fault-Low - Vee - Vee+0.5 V
Receiver
Parameter Symbol Min Typ Max Unit Ref.
Single ended data output swing Vout, pp 300 400 800 mV 2
Data output rise time tr - - 175 ps 3
Data output fall time tf - - 175 ps 3
LOS-High - Vcc – 0.5 Vcc V
LOS-Low - Vee Vee+0.5 V

Notes:

  1. AC coupled.
  2. Into 100 ohm differential termination.
  3. 20 – 80%

Optical Characteristics (TOP=25°C, Vcc=3.3V)

Transmitter
Parameter Symbol Min Typ Max Unit Ref.
Output Opt. Power PO -9 - -4 dBm 1
Optical Wavelength λ 830 850 860 nm
Spectral Width σ - - 0.85 nm
Optical Rise/Fall Time tr/tf - - 260 ps 2
Total Jitter TJ - - 200 ps
Optical Extinction Ratio ER 9 - - dB
Receiver
Parameter Symbol Min Typ Max Unit Ref.
RX Sensitivity @1.25 Gb/s RSENS - - -18 dBm 3, 4
Maximum Received Power RXMAX 0 - - dBm
Optical Center Wavelength λC 770 - 860 nm
LOS De-Assert LOSD - - -26 dBm
LOS Assert LOSA -40 - - dBm
LOS Hysteresis - 0.5 - 5 dB

Notes:

  1. Class 1 Laser Safety.
  2. Unfiltered, 20-80%. Complies with GE and 1x FC eye masks when filtered.
  3. Measured with conformance signals defined in FC-PI-2 Rev. 10.0 specifications.
  4. Measured with PRBS 27-1 at 10-10 BER.

Mechanical Specifications 

SFP  Small  Form  Factor  Pluggable  (SFP)  transceivers  are  compatible  with  the dimensions defined by the SFP Multi-Sourcing Agreement (MSA).

EEPROM Information

EEPROM memory map specific data field description is as below:

Digital Diagnostic Monitoring Interface

Five transceiver parameter values are monitored. The following table defines the monitored parameter's accuracy.

Parameter Range Accuracy Calibration
Temperature 0 to +70°C (C) / -40 to +85°C (I) ±3°C Internal
Voltage 2.97 to 3.63V ±3% Internal
Bias Current 0 to 100mA ±10% Internal
TX Power -9 to -4dBm ±3dB Internal
RX Power -18 to 0dBm ±3dB Internal