[sdiy] Analog division

[Eric Brombaugh]

On 07/16/2010 02:59 PM, Karl Ekdahl wrote:
> Hi list
>
> So i want to do analog division but i can't really find anything useful, most of what i've found so far are vague statements about being able to do it with a log/antilog approach and then this site; http://en.labs.wikimedia.org/wiki/Electronics/Analog_multipliers which looks great except none of the circuits work when i simulate them. Also i've been looking into using the AD633 but hot damn they're expensive. Any pointers to a fairly accurate (not exceedingly so) division-circuit?

It's possible to compute division by wrapping a servo loop around a 
multiplier, but the loop has a certain settling time which may not be 
tolerable in your application. What's the bandwidth of the signal you 
need to divide?

Eric