SiTime SIT5155AI-FK-28N0-40.000000Y

The SiT5155 is a ± 0.5 ppm MEMS Super-TCXO that is engineered for high reliability, GNSS-based precision positioning and timing applications. Leveraging SiTime's unique DualMEMS™ temperature sensing and TurboCompensation™ technologies, the SiT5155 delivers the best dynamic performance for timing stability in the presence of environmental stressors such as air flow, temperature perturbation, vibration, shock, and electromagnetic interference. This device also integrates multiple on-chip regulators to filter power supply noise, eliminating the need for a dedicated external LDO. The SiT5155 offers three device configurations that can be ordered using Ordering Codes for:

• TCXO with non-pullable output frequency
• VCTCXO allowing voltage control of output frequency
• DCTCXO, enabling digital control of output frequency using an I²C interface, pullable to 5 ppt (parts per trillion) resolution The SiT5155 can be factory programmed for specific combinations of frequency, voltage, and pull range. Programmability enables designers to optimize clock configurations while eliminating long lead times and customization costs associated with quartz devices where each frequency is custom built. Refer to Manufacturing Guideline for proper reflow profile and PCB cleaning recommendations to ensure best performance.

• 12 frequencies from 10 MHz to 40 MHz
• Factory programmable options for short lead time
• Best dynamic stability under airflow, thermal shock
• ± 0.5 ppm stability across temperature
• ± 15 ppb/°C typical frequency slope (AF/AT)
• -40°C to +105°C operating temperature
• No activity dips or micro jumps
• Resistant to shock, vibration and board bending
• On-chip regulators eliminate the need for external LDOs
• Digital frequency pulling (DCTCXO) via I²C
• Digital control of output frequency and pull range
• Up to ± 3200 ppm pull range
• Frequency pull resolution down to 5 ppt
• 2.5V, 2.8V, 3.0V and 3.3V supply voltage
• LVCMOS or clipped sinewave output
• RoHS and REACH compliant
• Pb-free, Halogen-free, Antimony-free

• Precision GNSS systems
• Microwave backhaul
• Professional audio and video equipment
• Network routers and switches
• Storage and servers
• Test and measurement