ENDR-TTT

The ruggedized Endura ENDR-TTT is a precision MEMS Super-TCXO that overcomes the long-standing limitations of quartz-based TCXOs. Leveraging SiTime’s proprietary DualMEMS® temperature sensing and TurboCompensation® technologies, it delivers exceptional stability under airflow, temperature perturbation, vibration, shock, and EMI.

The ENDR-TTT offers industry-leading performance for dynamic stability, low power, and rugged operation. It achieves ±50 ppb to ±500 ppb frequency stability over a –55 °C to +125°C operating range. With 21 mW low-power operation (1.8 V), exceptional g-sensitivity of 0.004 ppb/g, and low phase noise of –151 dBc/Hz at 10 kHz offset (Fc=10 MHz), it supports demanding aerospace, defense, GNSS, and communications environments.

Offering factory-programmed frequencies from 1 MHz to 105 MHz, this oscillator provides unregulated or regulated LVCMOS, or clipped-sine output options with integrated on-chip regulators that eliminate external LDOs. It supports 1.8 V to 3.3 V operation in a 5.0 × 3.2 mm² surface-mount package. Digital control via I²C or SPI enables precision frequency pulling (±200 ppm range with 3.64 ppt resolution), temperature readout, and system synchronization with 16 factory-programmed pull-range options. Long-term reliability, lifetime availability, and production testing ensure durable performance in mission-critical systems. The device is available in TCXO and DCTCXO configurations to support fixed-frequency or digitally controlled applications.