The EL6202 consists of a variable amplitude, push only, oscillator that also supplies the laser DC current. It is designed to easily interface to existing ROM controllers, reducing parts count, and power dissipation. The reduction of parts count and the small package allows the oscillator to be placed closer to the laser, thus reducingEMI. Also, the turn-on and turn-off edges are slew ratelimited to reduce higher harmonics. The total current drawn from the power supply can be less than the laser threshold current due to the unique push-only modulation method. The average current is less than the peak oscillator current, and can be less than half of the oscillator current. The power control current supplied from the main board is reduced to less than 2mA. One external resistor sets the oscillator frequency. A currentapplied to the IIN terminal determines the amplitude of the oscillator and laser DC current. If the oscillator amplitude isset very low, the output and oscillator are disabled. The part is available in the space-saving SOT23-5 package. It is specified for operation from 0°C to +70°C.
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