The EL6206 is a push-pull oscillatorused to reduce laser noise. It uses thestandard interface to existing ROMcontrollers. The frequency and amplitude are each set with aseparate resistor connected to ground. The tiny package andharmonic reduction allow the part to be placed close to alaser with low RF emissions. An auto turn-off feature allows itto easily be used on combo CD-RW plus DVD-ROM pickups.One external resistor sets the oscillator frequency. Anotherexternal resistor sets the oscillator amplitude. If the APCcurrent is reduced such that the average laser voltage dropsto less than 1.1V, the output and oscillator are disabled,reducing power consumption to a minimum.The current drawn by the oscillator consists of a small biascurrent, plus the peak output amplitude in the positive cycle.In the negative cycle the oscillator subtracts peak outputamplitude from the laser APC current.This part is pin-compatible to the EL6201. It is superior to theEL6201 in several ways: It has up to 100mA outputcapability, it is faster (up to 600MHz), it is more powerefficient,it has less harmonic content, and it has an autoshut-off feature activated at 1.1V.