SiTime SiT9005 Spread Spectrum Oscillators

Specifications include a center spread up to ±2.0%, with a down spread to -4.0%, and engineers can choose triangular or Hershey-Kiss modulation profiles to match system timing requirements. Eight selectable rise/fall time options provide additional spectral shaping, while cycle-to-cycle jitter of 8.5ps minimizes the impact of spread modulation on timing budgets. Frequency stability options of ±20ppm, ±25ppm, and ±50ppm support operating ranges from −20°C to +70°C and −40°C to +85°C, with supply options spanning 1.8V and 2.5V to 3.3V.

Field programmability via SiTime’s Time Machine II oscillator programmer allows the adjustment of spread parameters and drive strength at the bench and validates emissions performance in real time, eliminating the need to order new samples and repeat validation cycles. The SiT9005 is available in industry-standard packages: 2.0mm × 1.6mm, 2.5mm × 2.0mm, and 3.2mm × 2.5mm. Larger package options are available on request, enabling drop-in replacement without board redesign. Based on MEMS architecture, the device replaces quartz oscillators, avoids shielding and absorber materials, maintains stable spread-spectrum modulation under vibration and temperature stress, and provides a plug-and-play solution that accelerates time-to-market in EMI-sensitive applications.