High Speed Triple Laser Diode Drivers

The ISL58315 is a high-speed, triple-output laser diode driver (LDD) for laser scanning projector systems, which require three channels modulated at high speed with independent current control. Each output channel provides laser-independent current control for threshold and color DACs. Separate scale DACs allow independent scaling of both threshold and color DAC output values. This allows control of projector brightness and can be used to simplify automatic power calibration (APC) for laser-based systems. Pixel data information is transferred through the LDD's high-speed 10-bit or 15-bit parallel video interface. Three parallel interface modes provide flexibility and allow users a trade-off among speed, power and bus width. Pixel data employs a double data rate scheme, allowing video data to be transferred using both clock edges.