SiTime Corporation I2C\/SPI Oscillators SIT3521AC-1CF331SM1.033000

The SiT3521 is a 1 to 340 MHz I2C/SPI programmable oscillator with ultra-low jitter, designed for telecommunications, networking, and industrial applications requiring flexible clock generation. It operates over a temperature range of -40°C to 105°C and is packaged in a 10-lead QFN measuring 5.0 x 3.2 mm. The device supports programmable output signals in LVPECL, LVDS, or HCSL formats, with integrated LDO for power supply noise filtering and a typical integrated phase jitter of 0.21 ps from 12 kHz to 20 MHz. It offers in-system frequency programming with up to ±3200 ppm digital frequency pulling and 5 ppt resolution. The part is RoHS and REACH compliant, Pb-free, halogen-free, and antimony-free.