Question on squaring operation using AD633

[pjainmg]

Hi all,

I'm trying perform a squaring of audio signals using AD633. The datasheet shows two methods of connection. I foresee that I may have a problem as I do not wish to have output voltage varying too much due to the dc term in the 1st method and would like to have a bounceless effect. Any suggestions?

 

[q5101997]

Hi all,

I'm trying perform a squaring of audio signals using AD633. The datasheet shows two methods of connection. I foresee that I may have a problem as I do not wish to have output voltage varying too much due to the dc term in the 1st method and would like to have a bounceless effect. Any suggestions?

Can you be more specific. What do you mean by "bouncless effect"?

 

[crutschow]

So why not use the "bounceless" connection shown in Figure 5 in the data sheet?

 

[pjainmg]

because my signal is not constant. I'm processing audio signals or music.

 

[pjainmg]

My capacitor at the RC network cannot be a single value.

 

[crutschow]

Don't see any way to completely eliminate the DC shift then. It's inherent in the squaring process. About the best you can do is AC couple the output through a capacitor to suppress the DC term, but you'll still get a "bump" when the input amplitude suddenly changes.

 

[pjainmg]

Or is there other solution to this?