MAX4004EUT

    The MAX4004 precision, high-side, current monitor is specifically designed for monitoring photodiode current in fiber applications. It offers a connection point for the reference current and a monitor output that produces a signal  proportional to the reference current. The monitor output of the MAX4004 is a current proportional to the reference current. The current monitor has six decades of dynamic range and monitor reference current of 250nA to 2.5mA  with better than 5% accuracy. The photodiode current can be monitored from 10nA to 10mA with reduced accuracy.  

    The MAX4004 accepts a +2.7V to +22V supply voltage, suitable for PIN photodiode applications. Internal current limiting (20mA, typ) protects the device against short-circuit-to-ground or excessive current conditions. A clamp  diode protects the monitor output from overvoltage. Additionally, this device feature thermal shutdown if the die temperature reaches +150. 

    The MAX4004 is available in tiny, space-saving 6-pin SOT23 packages, and operates over the extended temperature range of -40 to +85.