CN-0156 ,Similar to it needed Amplitude Control of Sine wave from 0.5VAC to 6VAC

Dear Sir/Madam,

I am looking for Amplitude Control of Sine wave from( 0.5VAC to 5.5VAC) with Frequency of 400Hz,

Amplitude Control thought microcontroller or thought SPI interface, 

https://www.analog.com/media/en/reference-design-documentation/reference-designs/CN0156.pdf

The about link is Somewhat okay but, It Can give Sine wave from ( 0.1VAC to 0.6VAC) only..

Plz Help me how to Achieve Sine wave from( 0.5VAC to 5.5VAC)  which can be Amplitude Control thought microcontroller

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