Adafruit Si5351A Clock Generator Breakout Board - 8KHz to 160MHz

Never hunt around for another crystal again, with the Si5351A clock generator breakout from Adafruit! This chip has a precision 25MHz crystal reference and internal PLL and dividers so it can generate just about any frequency, from <8KHz up to 150+ MHz.

VIN
Board power input. Adafruit Learn states the onboard regulator accepts 3-5VDC and converts it down for the 3V Si5351A chip.
Type · powerVoltage · 3-5VDC input, source-backed by Adafruit Learn pinouts
GND
Common ground for power and logic.
Type · groundVoltage · 0V
SCL
I2C clock line. Adafruit states this pin is level shifted and has a 10K pullup.
Type · i2cVoltage · 3-5V logic
SDA
I2C data line. Adafruit states this pin is level shifted and has a 10K pullup.
Type · i2cVoltage · 3-5V logic
0
Independent generated clock output. Adafruit states the clock outputs are square waves from 0-3V and are also brought out to optional SMA edge-launch connectors.
Type · clock outputVoltage · 0-3V square wave output

Start wiring

I2C · 3-5VDC input, source-backed by Adafruit Learn pinouts · 0V

Confirm the data interface matches your host board.

Module pins: VIN, GND, SCL, SDA. Schematik maps them to your board in the app.

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