JM-SB31-3-20-SDI SFP optical transceiver support 1bidi broadcast SDI over dual independent LC fibers.

Features Description

1,>>1310nm DFB Laser diode transmitter,

>>1310nm InGaAs PIN photodiode receiver

2,SMPTE 424M/297M compliant

3,SMPTE 292M/259M/297M compatiable.

4,Robust error free transmission of signals from 50Mbps to 3Gbps with up to 20km single-mode fiber

5,Maximum distance of 10km under worst-case conditions and 3Gbps video pathological signals

6,Supports video pathological patterns for SD-SDI,HD-SDI and 3G-SDI

7,SFP Package.Hot-pluggable

8,Metal enclosure for lower EMI

9,+3.3V single power supply.

10,Laser disable pin

11,Digital diagnostics and control via I²C interface, including:

12,Monitoring laser bias current, average output power, receive optical power, supply voltage and temperature

13,Alarm reporting when transceiver is at fault

14,Module ID polling

15,Compliant ROHS and lead free

Applications

SMPTE 297-2006 compatible optical-to-electrical interfaces

Descriptions

The JM-SB31-3-20-SDI is dual independent channel Bi-Directional optical transceiver module designed to transmit and receive optical serial digital signals as defined in SMPTE 297-2006. It is specifically designed for robust performance in the presence of SDI pathological patterns for SMPTE 259M, SMPTE 344M,SMPTE 292M and SMPTE 424M serial rates.

Functional Block Diagram

Pin Description

JM-SB31-3-20-SDI Pin Out Diagram

Pin Function Definition

Recommended Host Board Supply Filtering

Optical Connector Requirements

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

Performance Specifications

Absolute Maximum Ratings

Operating Environment

Transmitter E-O characteristics

Receiver O-E characteristics

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

EEPROM Section

Serial Interface

The optical transmitter and receiver contains an EEPROM. It provides access to sophisticated identification information that describes the transmitter’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 transmitter. The negative edge clocks data from the transmitter. 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 transmitter generates this diagnostic data by digitization of internal analog signals. Calibration and alarm/warning threshold data is written during device manufacture. 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.

JM-SB31-3-20-SDI Typical application Circuit

Recommended Circuit

Note: 4.7K ohms﹤RES﹤10K ohms

Package information