Update: 30 September, 2023
The DS1862 is a closed-loop laser-driver control IC with built-in digital diagnostics designed for XFP MSA. The laser control function incorporates average power control (APC) and allows extinction ratio control through a temperature indexed look-up table (LUT). The DS1862 monitors up to seven analog inputs, including temperature and monitor diode (MD) current, which are used to regulate the laser bias current and extinction ratio. Warning and alarm thresholds can be programmed to generate an interrupt if monitored signals exceed tolerance. Calibration is also provided internally using independent gain and offset scaling registers for each of the monitored analog signals. Settings such as programmed calibration data are stored in password-protected EEPROM memory. Programming is accomplished through an I2C-compatible interface, which can also be used to access diagnostic functionality.
File format: PDF
Size: -
MD5 Checksum: 3694E001BED071487B418F3AF9B958DA
Publication date: 11 April, 2012
Downloads: -
PDF Link: MAXIM DS1862 handbook PDF