PDT-SFP-03-1G-850-0055

1.25Gbps Cisco GLC-SX-MM Compatible Gigabit 1000BASE-X MMF SFP Transceiver - 850nm LC 550m

Condition: New

£8.95 £10.74 inc VAT (UK Only)

Availability: 50 in stock

EAN: 5060813341351
SKU: 0020-00003 Category:
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1.25Gbps Cisco GLC-SX-MM Compatible Gigabit 1000BASE-X MMF SFP Transceiver – 850nm LC 550m

The PDT-SFP-03-1G-850-0055 is a low-cost, high-performance Small Form Pluggable (SFP) transceiver which is specifically designed for fiber communications with up to 1.25Gbps data rate, using MMF, over a distance of up to 550m.

This device is compatible with most vendors including Cisco, Parallax Digital Technologies, Meraki, D-Link, Ubiquiti, Supermicro, Netgear, Broadcom, Mikrotik, Robustel.

The transceiver consists of a VCSEL transmitter, a PIN photodiode, integrated with a trans-impedance pre-amplifier, and an MCU control unit.

The module is fully compliant with Class I Laser Safety Requirements. Access to internal Digital Diagnostic Memory Maps is possible using a 2-wire serial interface at addresses A0h and A2h. This is the commercial variant of this product and a wider temperature range variant is also available as part of the Industrial SFP Product Line.

 

Features:

  • Up to 1.25Gbps Bi-Directional Data Link
  • 850nm VCSEL laser and PIN Photodetector
  • Supports Links up to 550m with 50/125µm MMF
  • Supports Links up to 300m with 62.5/125µm MMF
  • Compliant with SFP MSA and SFF-8472 with duplex LC Connector
  • Digital Diagnostics Monitoring for Internal or External Calibration
  • Access to Physical Layer via 2-Wire Serial Data Bus
  • Full Metal Case for Low EMI
  • 0°C~+70°C Operating Temperature
  • -40­C~+85°C Storage Temperature
Weight 0.05 kg
Dimensions 10 × 5 × 2 cm
Form Factor

SFP
RJ45

N/A
Fiber Mode

MMF
Laser Wavelength

850nm
Speed

1 Gbps
Transmission Range

550m
Operating Temp

0~70°C
Storage Temperature

-40°C~+85°C
Condition

New
Manufacturer

Parallax Digital Technologies
Warranty

2 Years

Block Diagram:

Pin Definitions:

Pin Signal Name Description Plug Seq. Notes
1 VEET Transmitter Ground 1
2 TX FAULT Transmitter Fault Indication 3 Note1
3 TX DISABLE Transmitter Disable 3 Note2
4 MOD_DEF(2) SDA Serial Data Signal 3 Note3
5 MOD_DEF(1) SCL Serial Clock Signal 3 Note3
6 MOD_DEF(0) TTL Low 3 Note3
7 Rate Select Not Connected 3
8 LOS Loss of Signal 3 Note 4
9 VEER Receiver ground 1
10 VEER Receiver ground 1
11 VEER Receiver ground 1
12 RX- Inv. Received Data Out 3 Note 5
13 RX+ Received Data Out 3 Note 5
14 VEER Receiver ground 1
15 VCCR Receiver Power Supply 2
16 VCCT Transmitter Power Supply 2
17 VEET Transmitter Ground 1
18 TX+ Transmit Data In 3 Note 6
19 TX- Inv. Transmit Data In 3 Note 6
20 VEET Transmitter Ground 1

Notes:
Plug Seq.: Pin engagement sequence during hot plugging.
1) TX Fault is not supported and is always connected to ground.

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 ¨C 10 K resistor. Its states are:

– Low (0 to 0.8V): Transmitter on
– (>0.8, < 2.0V): Undefined
– High (2.0 to 3.465V): 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 to 10K resistor on the host board. The pull-up voltage shall be VccT or VccR

– 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

4) LOS is an open collector output, which should be pulled up with a 4.7k~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.

5) RD-/+: These are the differential receiver outputs. They are AC-coupled, differential lines with 100 differential termination inside the module.

6) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100 differential termination inside the module.

Interface:

Optical & Electrical Characteristics:

Parameter Symbol Min Typical Max Unit Notes
Transmitter
Centre Wavelength λc 830 850 860 nm
Spectral Width (RMS) σ 0.85 nm
Average Output Power Pout -9.5 -3.5 dBm 1
Extinction Ratio ER 9 dB
Optical Rise/Fall Time tr/tf 0.26 ns
Data Input Swing Differential VIN 400 1800 mV 2
Input Differential Impedance ZIN 90 100 110 Ω
TX Disable Disable 2.0 Vcc V
Enable 0 0.8 V
TX Fault Fault 2.0 Vcc V
Normal 0 0.8 V
Receiver
Centre Wavelength λc 770 860 nm
Receiver Sensitivity -18 dBm 3
Receiver Overload 0 dBm 3
LOS De-Assert LOSD -18 dBm
LOS Assert LOSA -35 dBm
LOS Hysteresis 1 4 dB
Data Output Swing Differential Vout 400 1800 mV 4
LOS High 2.0 Vcc V
Low 0 0.8 V

Notes:

  1. The optical power is launched into SMF.
  2. PECL input, internally AC-coupled and terminated.
  3. Measured with a PRBS 27-1 test pattern @1250Mbps, BER ≤1×10-12.
  4. Internally AC-coupled.

Timing & Electrical:

Parameter Symbol Min Typical Max Unit
Tx Disable Negate Time t_on 1 ms
Tx Disable Assert Time t_off 10 µs
Time To Initialize, including Reset of Tx Fault t_init 300 ms
Tx Fault Assert Time t_fault 100 µs
Tx Disable To Reset t_reset 10 µs
LOS Assert Time t_loss_on 100 µs
LOS De-assert Time t_loss_off 100 µs
Serial ID Clock Rate f_serial_clock 400 KHz
MOD_DEF (0:2)-High VH 2 Vcc V
MOD_DEF (0:2)-Low VL 0.8 V

Diagnostics Specification:

Parameter Range Unit Accuracy Calibration
Temperature 0 to +70 °C ±3°C Internal / External
Voltage 3.0 to 3.6 V ±3% Internal / External
Bias Current 0 to 100 mA ±10% Internal / External
TX Power -9 to -3 dBm ±3dB Internal / External
RX Power -23 to -3 dBm ±3dB Internal / External

Diagnostic Memory Map:

Recommended Operating Conditions:

Parameter Symbol Min Typical Max Unit
Operating Case Temperature Commercial Tc 0 +70 °C
Power Supply Voltage Vcc 3.13 3.3 3.47 V
Power Supply Current Icc 300 mA
Data Rate Gigabit Ethernet 1.25 Gbps
Fiber Channel 1.063

Absolute Max Ratings:

Parameter Symbol Min Max Unit
Supply Voltage Vcc -0.5 4.5 V
Storage Temperature Ts -40 +85 °C
Operating Humidity – 5 85 %

 

 

 

 

Datasheet
Declaration of Conformity

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PDT-SFP-03-1G-850-0055
£8.95 £10.74 inc VAT (UK Only)

Availability: 6 in stock (can be backordered)

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