The EL6272C is a single channel laser diode current amplifier that provides controlled current to a grounded laser diode. The amplifier can provide up to 200 mA of DC or pulsed current with switching speeds of approximately three nanoseconds rise/fall time. The level of the output current is set by an analog voltage applied to an external resistor which converts the voltage into a current at the IIN pin (virtually ground). The current seen at this pin is then amplified by 100X to become a current source at pin IOUT.