ML4632

Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
VCC ............................................................................... 0.3V to 6V
Input Pin Voltages ............................. 0.3V to VCC +0.3V
LED Output Current ............................................. 120mA
PEAK DC Output Current ..................................... 120mA
Storage Temperature.............................. 65°C to +150°C
Lead Temperature (Soldering 10 sec.) ..................... 260°C

The ML4632 is a fiber optic LED driver suited for networkapplications up to 20Mbps. The part is capable of drivingup to 100mA of current through a Fiber Optic LED froman ECL or TTL level input signal. Its efficient output stageprovides a high current that can be programmed foraccurate absolute output level as well as automatictemperature compensation. The combination of automatictemperature compensation and a highly accurate currentdriven design insures precise launch power.

The LED driver ML4632's output stage provides fast, well matchedrise and fall times through a unique class B output stagethat burns supply current only when the LED is on. Apositive temperature coefficient of up to 3300ppm/°C canbe programmed into the output current to compensate forthe negative temperature coefficient of the LED opticaloutput power. An optional peaking circuit of ML4632 may also beemployed.

The ECL and TTL inputs of ML4632 are ANDed so one can be usedfor data and the other for an enable input. An ECLcompatible BIAS voltage is also provided for single endedECL applications.