Product description
Adafruit Si5351A Clock Generator is a programmable clock generator capable of generating frequencies from below 8 kHz to over 150 MHz. The module uses a Si5351A with a 25 MHz precision crystal as a reference, together with internal PLLs and frequency dividers. Frequencies are configured via I²C.
The module has three independent clock outputs that can be set to different frequencies. The outputs provide 3 Vpp and can be connected via the pin header or optional SMA connectors. The board features a 3.3 V LDO regulator and level shifting on the I²C signals, allowing it to be used with both 3 V and 5 V logic.
Specifications:
- Manufacturer: Adafruit
- Product ID: 2045
- IC: Si5351A
- Type: Programmable clock generator
- Reference crystal: 25 MHz
- Frequency range: <8 kHz to >150 MHz
- Number of outputs: 3, independent
- Output level: 3 Vpp
- Interface: I²C
- Supply voltage: 3–5 VDC
- I²C logic level: 3 V or 5 V
- Voltage regulator: 3.3 V LDO
- Output connections: Pin header or optional SMA connectors
- Dimensions: 31 x 22 x 2 mm
