SiTime SIT5348AE-FR-33N0B54.000000

The SiT5348 is a precision MEMS Super-TCXO that achieves ±50 ppb stability over the 0°C to 70°C temperature range. Over a wider temperature range (down to -40°C and up to 105°C), it supports ±100 ppb stability. The device is carefully engineered for excellent dynamic performance, making it ideal for high-reliability telecom, wireless and networking, industrial, precision GNSS, and audio/video applications.

The SiT5348 leverages SiTime's unique DualMEMS temperature sensing and TurboCompensation technology to deliver outstanding dynamic clock stability performance in the presence of environmental disturbances such as airflow, temperature perturbations, 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 SiT5348 is offered in three device configurations, orderable via ordering codes:

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 SiT5348 can be factory-programmed for any combination of voltage and pull 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.

Please refer to the Manufacturing Guidelines for the correct reflow profile and PCB cleaning recommendations to ensure optimal performance.

• Frequency range 1 MHz to 60 MHz, 1 Hz step size
• Factory-programmable options for reduced lead time
• Excellent dynamic stability under airflow and thermal shock conditions
• Acceleration sensitivity of 0.009 ppb/g or 0.1 ppb/g
• ±50 ppb stability over 0°C to 70°C temperature range
• Typical frequency slope (ΔF/ΔT) of ±1 ppb/°C
• Allan deviation (ADEV) of 1.5×10⁻¹¹ at 10-second averaging time
• No activity dips or micro-jumps
• 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 sinewave output
• RoHS and REACH compliant
• Lead-free, halogen-free, antimony-free
• 5.0 mm×3.2 mm ceramic package

• Precision GNSS systems
• Satellite communications (SATCOM)
• Transponders