±50 to ±300 ppb, 1 to 105 MHz Ruggedized Precision Low Power Super-TCXO

Pre-Production Sampling

ENDR-OTT is a low-power, low-phase noise, ruggedized ±50 ppb to ±300 ppb precision MEMS Super-TCXO and Digitally Controlled TCXO in a 3.2 mm x 2.5 mm (8 mm2). Engineered for dynamic performance and low power, the ENDR-OTT is ideal for high reliability defense, avionics, guidance, precision GNSS and communications applications.

Leveraging SiTime’s unique DualMEMS® temperature sensing and TurboCompensation® technologies, ENDR-OTT delivers the best dynamic performance for timing stability in the presence of environmental stressors such as airflow, 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 Endura ruggedized clock family provides a lifetime warranty and availability. Refer to Manufacturing Guideline for proper reflow profile and PCB cleaning recommendations to ensure best performance.

3225 8-Pin MEMS Super-TCXO
"Specs" "Value"
Oscillator Type Low-Power Ruggedized MEMS Super TCXO
Frequency Factory-programmed from 1 MHz to 105 MHz
Frequency Stability (ppm) ±0.05 to ±0.3
Power 21 mW (1.8 V)
Operating Temperature Range (°C) –55 to +125
Package Type (mm²) 3.2 x 2.5, 8-pin
Phase Noise (dBc/Hz) -151dBc (10MHz, 10kHz offset)
Digital Interface I²C
Pull Range (ppm) ±200
Voltage Supply (V) 1.8 to 3.3
Features 0.004 ppb/g vibration g-sensitivity, DualMEMS®, TurboCompensation®, on-chip regulators
Availability Pre-Production Sampling
  • Factory programmed frequency: 1 MHz to 105 MHz
  • Low power 21 mW (1.8 V)
  • Small QFN package: 3.2 mm x 2.5 mm (8 mm2)
  • Low phase noise -151 dBc/Hz (Fc = 10 MHz, 10 kHz Offset)
  • Best dynamic stability under airflow, thermal shock
    • 30,000 g operational shock. Contact SiTime for up to 120 k g-shock
    • 0.004 ppb/g vibration g-sensitivity
    • ±50 to ±300 ppb frequency stability over temperature
  • -55°C to +125°C operating temperature
  • No activity dips or micro jumps
  • Digital frequency pulling (DCTCXO) via I2C
    • Digital control of output frequency
    • ±200 ppm pull range
    • Frequency pull resolution down to 3.64 ppt
    • Temperature readout
  • 1.8 V to 3.3 V supply voltage options
  • Regulated LVCMOS or clipped sine output
  • Lifetime Availability & Warranty
  • High-Reliability Production Testing
  • COSPAS-SARSAT Gen 1-2 Compliant
ENDR-OTT Block Diagram
  • Precision GNSS and Navigation Equipment
  • Mobile Low-Power Systems
  • Precision Guided Munitions and Ballistic Systems
  • UAV Communications
  • Manpack Radios
  • Frequency and Phase Synchronization Systems
  • High-Reliability Communications and Defense Systems
  • Avionics

Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature

Time Error Simulation Software – Simulate and analyze the impact of the local oscillator

TimeMaster Configuration Software – Configure and evaluate oscillators via I2C/SP

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