What is it?

This board features an AVR ATMega328 and Silicon Labs Si5351A-B-GT LVCMOS Clock Generator which supports 3 outputs and has a frequency output between 0.0025 and 220 Mhz. The ports can be individually programmed for frequency (100 kHz to 225 Mhz), sweep width, and output power control - 2ma - 4ma - 8ma.

Why did you make it?

I needed a variable clock source to test some filters and my signal generator was limited to H.F. Frequencies. So I designed this board to handle higher frequencies. I used a RC filter to convert the signal to a sine wave.

What makes it special?

The board features :

• • D.C Jack for supply input 9V
• • OnBoard 5v Regulator
• • 16 X 2 LCD With contrast control preset pot
• • Settings - setup - are saved and restored from EEPROM
• • Three switches - to select individual port and setup Frequency and Output Power , sweep width.
• • Rotary Encoder with a switch to select the frequency and select option
• • Selectable Frequency step 1Hz,10Hz,100Hz,1000Hz, 1Mhz , 10Mhz on Rotary Encoder Button.
• • Sweep Function with selectable pulse widths.
• • Compact design 100 x 100mm
• • ICSP - Serial Header for future Firmware Updates.

What is included?

Assembled Board with all parts soldered - Ready to go.