Hello all, I am Ahmad. I am looking for multiplier chip which has multi input signals ( multi multiplier in one chip) Does this chip exsit?
thanks
Multipliers
Apr 14, 2008
2 Replies
Do you mean an analog multiplier? Probably not. Even when analog multipliers were not rare they were pretty much two-input devices.
What are you trying to do? If you're working with signals that are not screamingly fast then signal processing that involves multiplying signals together is often best done digitally, at least these days.
Tim Wescott
Control systems and communications consulting
http://www.wescottdesign.com
Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes, http://www.wescottdesign.com/actfes/actfes.html
Maybe not under the name 'multiplier', but you can use matched transistors to convert current quantities to voltage proportional to log(I), and then sum the voltages, scale appropriately, and inverse-logarithm (i.e. exponentiate) to make a result. An array of six identical transistors would implement a five-factor product.
The transistors have to be at the same temperature, so a common heatsink or a packaged multiple-transistor circuit is preferred.
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