GENERAL DESCRIPTION

The SP8110 is a Two-Channel Modulation IC utilizing high frequency current to suppress the noise of grounded laser diodes. Modulation frequency is adjusted in both channels simultaneously by an external resistor Rf tied to the ground. The amplitude of the high frequency current is set for each channel separately by a DC input current applied to the appropriate input pin (IA or IB for Laser A or Laser B, respectively). Current gain from input to output is 100mA/mA (typical).

FEATURES

• 5V Single supply voltage

• Two output channels, suitable for different wavelength laser diodes

• Oscillator frequency is adjustable in both channels simultaneously

• Oscillator amplitude is adjustable for each output separately up to 130mA

• Operates two grounded laser diodes

• Small DFN 2 x 3mm package

APPLICATION

• DVD-ROM or DVD-Video applications utilizing twin laser diodes