SiTime Corporation I2C\/SPI Oscillators SiT3521AI-2CF2520U125.000000

The SiT3521 is a 1 to 340 MHz I²C/SPI programmable oscillator with a 5.0 x 3.2 mm 10-lead QFN package. It supports LVPECL, LVDS, or HCSL outputs, with integrated LDO for power supply noise rejection and typical integrated phase jitter of 0.21 ps (12 kHz to 20 MHz). Operating temperature ranges from -40°C to 105°C for extended industrial variants. The device enables in-system frequency programming in 1 Hz steps across the full range and offers digitally controlled oscillation with pull ranges up to ±3200 ppm and resolution as low as 5 ppt. RoHS and REACH compliant, with I²C address configurable via hardware pins or factory programming.