20KM 1550nm 3G SDI Video SFP Optical Transceiver include 1SFP transmitter and 1 SFP receiver, supporting pathological

JM-STR55-3-20-SDI SFP optical transceiver includes two parts--the transmitter(JM-ST55-3-20-SDI) and Receiver(JM-SR55-3-20-SDI).

JM-STR55-3-20-SDI SFP optical transceiver Features
1,SMPTE 259M/292M/424M compatible
2,Robust error free transmission of signals from 50Mbps to 3Gbps with up to 20km single-mode fiber
3,Maximum distance of 2km under worst-case conditions and 3Gbps video pathological signals
4,Supports video pathological patterns for SD-SDI,HD-SDI and 3G-SDI
5,SFP Package.Hot-pluggable
6,Metal enclosure for lower EMI
7,+3.3V single power supply.
8,Low Power Consumption— typical 260mW
9,Laser disable pin
10,Digital diagnostics and control via I²C interface, including:
11,Monitoring laser bias current, average output power, supply voltage and temperature
12,Alarm reporting when transmitter is at fault
13,Module ID polling
14,Compliant ROHS and lead free
JM-STR55-3-20-SDI SFP optical transceiver Applications
SMPTE 297-2006 compatible electrical-to-optical interfaces

Descriptions
The JM-ST55-3-20-SDI is a single channel optical transmitter module designed to transmit optical serial
digital signals as defined in SMPTE 297-2006,which is specifically designed for robust
performance in the presence of SDI pathological patterns for SMPTE 259M, SMPTE 292M and SMPTE
424M serial rates.

The JM-SR55-3-20-SDI is a single channel optical receiver module designed to convert optical serial digital signals to electial serial digital signals as defined in SMPTE 297-2006,which is specifically designed for robust performance in the presence of SDI pathological patterns for SMPTE 259M, SMPTE 292M and SMPTE 424M serial rates.

Functional Block Diagram

JM-ST55-3-20-SDI Part:

JM-SR55-3-20-SDI Part:

Pin Description

JM-ST55-3-20-SDI Pin Out Diagram:

JM-SR55-3-20-SDI Pin Out Diagram:

Pin Function Definitions

JM-ST55-3-20-SDIPart:

Note:

1. TX-Fault is an open collector/drain output, which should be pulled up with a 4.7K–10KΩ resistor on the host board. Pull up voltage between 2.0V and VCC+0.3V. When high, output indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.

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 4.7–10 KΩ resistor. Its states are:

Low (0 – 0.8V): Transmitter on

(>0.8, < 2.0V): Undefined

High (2.0 – 3.465V): Transmitter Disabled

Open: Transmitter Disabled

3. Mod-Def should be pulled up with a 4.7K – 10KΩ resistor on the host board. The pull-up voltage shall be VCC. Mod-Def is grounded by the module to indicate that the module is present .

4. VCC is the transmitter power supplies. It is defined as 3.3V ±5% at the SFP connector pin. Maximum supply current is 300mA. Recommended host board power supply filtering is shown below. Inductors with DC resistance of less than 1Ω should be used in order to maintain the required voltage at the SFP input pin with3.3V supply voltage. When the recommended supply filtering network is used, hotplugging of the SFP transceiver module will result in an inrush current of no more than 30 mA greater than the steady state value.

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

JM-SR55-3-20-SDI Part:

Note:

1. Mod-Def should be pulled up with a 4.7K – 10KΩ resistor on the host board. The pull-up voltage shall be VCC. Mod-Def is grounded by the module to indicate that the module is present .

2,LOS is an open collector/drain output,which should be pulled up with a a 4.7K – 10KΩ resistor.Pull up voltage between 2.0V and VccT,R+0.3V.When high,this output indicates the received optical power is between the worst-case receiver sensitivity(as defined by the standard in use).Low indicates nomal operation.In the low state,the output will be pulled to <0.8V.

3. VCC is the receiver power supply. It is defined as 3.3V ±5% at the SFP connector pin. Maximum supply current is 300mA. Recommended host board power supply filtering is shown below. Inductors with DC resistance of less than 1Ω should be used in order to maintain the required voltage at the SFP input pin with3.3V supply voltage. When the recommended supply filtering network is used, hotplugging of the SFP transceiver module will result in an inrush current of no more than 30 mA greater than the steady state value.

4. TD-/+: These are the differential receiver outputs. They are AC-coupled, differential lines with 100Ω differential termination at the user SERDES.The AC coupling is done inside the module and is thus not required on the host boards.

JM-STR55-3-20-SDISFP optical transceiver recommended Host Board Supply Filtering

Optical Connector Requirements

An LC connector with PC/UPC polish is required for each port.

Performance Specifications

Absolute Maximum Ratings

Operating Environment

Transmitter E-O characteristics

Note: The sensitivity specification refers to the input power levels for BER = 1E-12 against PRBS 2^23-1.

EEPROM Section

The optical transceiver contains an EEPROM. It provides access to sophisticated identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer, and other information. The serial interface uses the 2-wire serial CMOS EEPROM protocol defined for the ATMEL AT24C01A/02/04 family of components. When the serial protocol is activated, the host generates the serial clock signal (SCL). The positive edge clocks data into those segments of the EEPROM that are not write protected within the SFP transceiver. The negative edge clocks data from the SFP transceiver. The serial data signal (SDA) 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.

The Module provides diagnostic information about the present operating conditions. The transceiver generates this diagnostic data by digitization of internal analog signals. Calibration and alarm/warning threshold data is written during device manufacture. Received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring all are implemented. The diagnostic data are raw A/D values and must be converted to real world units using calibration constants stored in EEPROM locations 56 – 95 at wire serial bus address A2h. The digital diagnostic memory map specific data field define as following.

Recommended Circuit

JM-ST55-3-20-SDI part

JM-SR55-3-20-SDI Part

 Note: 4.7K ohms﹤RES﹤10K ohms

JM-STR55-3-20-SDI SFP optical transceiver Package information