Programmable Attenuator
Can I use a digital-to-analogue converter IC as a programmable attenuator?
if I feed an analogue signal into the reference input of a DAC, can I use the latter as a sort of electronic potentiometer by varying the digital inputs? Or do they respond too slowly to work in this way?
***** EDIT *****
@ultimate: Because I already have some DAC ICs in my parts drawer.
The idea works
http://www.maxim-ic.com/view_press_release.cfm/release_id/1463
http://www.discovercircuits.com/A/attenuators.htm
You need to know all the specs of the DAC, etc.
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