Optical Transceiver Diagnostic Monitor

Dallas Semiconductor has introduced the DS1852, claimed to be the industry's first optical transceiver diagnostic monitor implementing the enhanced monitoring features defined in the SFF-8472 Multisource Agreement proposal.

The monitor manages all system monitoring functions required for SFF-8472-compliant optical transceivers. The high level of integration reduces component count and size and speeds up the design of optical transceivers.

The DS1852's functions include: EEPROM memory for identification, tracking, and calibration; an analogue-to-digital converter with four muxed inputs for monitoring system parameters; a temperature sensor; three fast comparators; and a two-wire serial interface.

Programmable alarm and warning flags for all four ADC inputs and a temperature sensor enable the device to alert the system to out-of-tolerance conditions for a variety of measured parameters.

The device is available in a 5 x 5 BGA package (0.8 mm pitch). It operates at 2.7 to 5.5 V.