Voltage controlled volumecontrol?

AX tech editor
Joined 2002
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I have had excellent result with the CS3310 or one of its variants:

https://docs.rs-online.com/d699/0900766b804c9851.pdf

There's also a higher voltage version and even an 8 channel version.
What's good enough for Jeff Rowland is good enough for me.
Digital pots are often less suitable because you would want a log law and most digipots are linear.
They also have relatively high distortion.

Jan
 
I am trying to search for an analog solution where the resistance is changed by voltage or current.
1) Junction FET
https://en.wikipedia.org/wiki/JFET

2) Analogue multiplier
https://en.wikipedia.org/wiki/Analog_multiplier
https://www.analog.com/media/en/technical-documentation/data-sheets/ad633.pdf

3) Balanced Modulator
http://www.mit.edu/~6.301/LM1496.pdf

4) PWM volume control
http://mehtadhaval.blogspot.com/2011/01/digital-volume-control-using-cd4066.html

There are other methods that're more complicated than the above.
 
Administrator
Joined 2007
Paid Member
If you are just having a play... have a look at the old M5222 I/C which are still knocking around from the usual suspects.

Not the last word in design by todays standards but it is as easy to use as an opamp and good fun to play with.
 

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