ADF4351 controlled with ESP32

This repository contains drivers for ADF4351 and a ESP32 example.

Usage

• Follow the ADF4351example.ino, first instantiate a ADF4351 object.

ADF4351 adf4351(clock,data,LE,CE); // declares object PLL of type ADF4351

• Then use adf4351.begin(); to initialize the adf4351 object, including setting the pinMode and the initial state of four pins(SCLK, DATA, LE, CE)
• Finally load the data into corresponding registers, then ADF4351 will work.

Connection

• There are five lines to connect.

  ESP32	ADS4351	Description
  GND	GND	Ground
  VSCK/HSCK	CLK	SPI Clock
  MOSI	DATA	Master Out Slave In
  SS	LE	Load Enable
  Any GPIO pin and set to OUTPUT mode and HIGH	CE	Chip Enable

Frequency Calculation

Using ADI ADF4351 Evaluation Board Software, we can conveniently calculate the registers.

https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/eval-adf4351.html#eb-overview

• Then just fill in the registers on given example.