SiTime Corporation Stratum 3E DCOCXOs SIT5721AI-KWF33-T-10.000000

The SiT5721 is a Stratum 3E-compliant digitally controlled OCXO (DCOCXO) operating from 1 to 60 MHz, designed for high-stability timing in 4G/5G base stations, test equipment, and IEEE 1588 applications. It is offered in a 9 mm x 7 mm package and operates with a 3.3 V supply. The device delivers ±5 ppb frequency stability over temperature, a frequency slope of ±0.04 ppb/°C, and ±5 ppt resolution for I²C-based frequency tuning with up to ±10 ppm pull range. It supports LVCMOS or clipped sine wave output, features integrated power supply noise filtering, and maintains performance under environmental stressors including airflow, vibration, and EMI. The part is rated for industrial temperature range -40°C to 85°C.