ac signal with dc component

[g9x]

Hi,

I have an AC signal that needs to have a precise DC offset (1v-10v AC signal + 0.5v DC offset)
I am limited to single supply.

What is the best way I could achieve this?

any help is appreciated.

thanks!

 

[ankitvirdi4]

Hi!

Try using a summing amplifier or a non inverting amplifier with DC offset (both designed for unity gain).

The precision depends largely on the 0.5V offset signal, riding it of noise will give you good results.

Cheers!

 

[FvM]

What's the best way depends on your requirement details. The most simple way is a bias-T (a capacitor + a resistor) and a 0.5 V DC source.

 

[ravindragudi]

More details needed. Refer to the link here for one of the approach of adding dc bias.
https://www.edn.com/design/analog/4335762/Circuit-level-shifts-ac-signals