AD9833 Function Generator Module is a low-power, programmable waveform generator capable of producing sine, triangular, and square wave outputs.
The output frequency and phase are software-programmable, allowing easy tuning. No external components are needed.
The frequency registers are 28 bits wide, and with the 25 MHz clock rate, a resolution of 0.1 Hz can be achieved.
AD9833 has a 3-wire serial interface (SPI). This serial interface operates at clock rates up to 40 MHz and is compatible with DSP and microcontroller standards.
The device operates on a 2.3 to 5.5V power supply and has a power-down function (SLEEP).
AD9833 Arduino Libraries are available, for example on GitHub.