Dallas Semiconductor Launches Low-Jitter Crystal-Stabilized Clock Generator

Dallas, TX -- Dallas Semiconductor introduces the DS1080L, a crystal-based clock generator. The DS1080L has an integrated phase-locked loop (PLL) to generate clock outputs and three pin-selectable multiplier rates and three dither magnitudes to reduce EMI. Cycle-to-cycle jitter is a low 75ps. To conserve power, the DS1080L has a spread-spectrum disable mode and a power-down mode.

When used with a low-cost 16MHz to 34.4MHz crystal, the DS1080L can generate 16MHz to 134MHz output frequencies with pin-selectable integer multipliers of 1, 2, and 4. Pin-selectable center-spread dither magnitude choices are 0% (disabled), ±0.5%, ±1.0%, ±1.5%. The spread-spectrum dither rate is fixed at fIN / 1024 to keep the dither rate above the audio frequency range. Using the spread-spectrum DS1080L for the system clock can simplify or eliminate shielding and filtering.

The DS1080L offers 3.0V to 3.6V operation over the automotive temperature range of -40 degrees Celsius to +125 degrees Celsius. It is available in a 8-pin microSOP.

SOURCE: Maxim Integrated Products