Features: * Complete programmable laser diode driver* 450mA maximum total output* 10-bit x 10-bit multiplying DAC output provides 10-bit full scale adjustment and 10-bit resolution at any full scale output* 60 psec timer resolution* Two laser outputs allows read/write DVD and CD combinations* Prog...
EL6934: Features: * Complete programmable laser diode driver* 450mA maximum total output* 10-bit x 10-bit multiplying DAC output provides 10-bit full scale adjustment and 10-bit resolution at any full scale...
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The EL6934 is a highly integrated laser diode driver designed to support multi-standard writable optical drives. It accomplishes this by incorporating a waveform generator wherein the diode currents and timing details can be programmed before operation. The data input circuitry inspects the NRZ serial data waveform and generates programmed waveforms in recognition of 3, 4, 5, or 6 or more clock periods of space changing to 3, 4, 5, or 6 or more clock periods of mark, and vice versa.
The architecture EL6934 allows reprogramming of the timers to support different media, Blue, DVD, or CD standards, and different speeds. The programming is accomplished through a serial interface port. Two outputs are provided to support dual-laser multi-standard optical heads. The clock and NRZ inputs can be either standard CMOS or LVDS, selectable through a program bit.
The EL6934 requires 2.5V and 5V supplies, with all the logical interface operating on the 2.5V supply.