The Si5351A Clock Generator breakout integrates Si5351A a precision 25MHz crystal reference and internal PLL and dividers so it can generate just about any frequency, from <8KHz up to 150+ MHz. It has I2C communication interface and onboard 3.3V LDO and level shifters means its ready for use with 3V or 5V power and logic. Si5351 specifications Generates up to 3 non-integer-related frequencies from 8 kHz to 160 MHz I2C user definable configuration Exact frequency synthesis at each output (0 ppm error) Highly linear VCXO Low output period jitter: 100 ps pp Configurable spread spectrum selectable at each output Operates from a low-cost, fixed frequency crystal: 25 MHz on board Supports static phase offset Programmable rise/fall time control Glitchless frequency changes Excellent PSRR eliminates external power supply filteringVery low power consumption Adjustable output-output dela PCIE Gen 1 compliant Supports HCSL compatible swing Resources Adafruit Si5351 Clock Generator Breakout