SiTime SIT5356AICFN-33E0-10.000000

The SiT5356 is a ±100 ppb accuracy MEMS Super-TCXO that fully complies with the Telcordia GR-1244-CORE Stratum 3 oscillator specification. The SiT5356 is designed with excellent dynamic performance, making it ideal for high-reliability telecommunications, wireless and networking, industrial, precision GNSS, and audio/video applications.

The SiT5356 leverages SiTime's proprietary DualMEMS temperature sensing and TurboCompensation technology to deliver superior dynamic performance for timing stability in the presence of environmental disturbances such as airflow, temperature fluctuations, vibration, shock, and EMI. The device also integrates multiple on-chip voltage regulators to filter power supply noise, eliminating the need for dedicated external LDOs.

The SiT5356 is offered in three device configurations, orderable via ordering code:

1. TCXO with a non-adjustable output frequency;
2. VCTCXO allowing voltage-controlled output frequency adjustment;
3. DCTCXO supporting digitally controlled output frequency via I²C interface, with frequency adjustment resolution down to 5 ppt (parts per trillion).

The SiT5356 can be factory-programmed for any combination of frequency, stability, voltage, and tuning range. This programmability enables designers to optimize clock configurations while eliminating the long lead times and custom costs associated with quartz devices, which require custom production for each frequency.

Refer to the manufacturing guidelines for proper reflow profiles and PCB cleaning recommendations to ensure optimal performance.

• Frequency range 1 MHz to 60 MHz, 1 Hz step size
• Factory-programmable options with short lead times
• Excellent dynamic stability under airflow and thermal shock conditions
• ±100 ppb stability over full temperature range
• Typical frequency slope (ΔF/ΔT) of ±1 ppb/°C
• Allan deviation (ADEV) of 1.5e-11 at 10-second averaging time
• Operating temperature range -40°C to +105°C
• No activity dip or micro-jump
• Resistant to shock, vibration, and board flex
• On-chip voltage regulator eliminates external LDO
• Digital frequency adjustment via I²C (DCTCXO)
• Digital control of output frequency and adjustment range
• Adjustment range up to ±3200 ppm
• Frequency adjustment resolution down to 5 ppt
• Supply voltage 2.5 V, 2.8 V, 3.0 V, and 3.3 V
• LVCmos or clipped sine wave output
• RoHS and REACH compliant
• Lead-free, halogen-free, antimony-free

4G/5G radios, small cells, IEEE 1588 boundary and grandmaster clocks, carrier-grade routers and switches, synchronous Ethernet, optical transport (SONET/SDH, OTN, Stratum 3), DOCSIS 3.x remote PHY, GPS-controlled oscillators, precision GNSS systems, test and measurement