Four quadrant multipliers:Results of my searching

[jh.]

> For a DIY yes, but when in commercial buissness, no. Each trimmer is
> expensive then. Laser-trimming reduces the need.

Does this mean the 633 requires no trimming ?
I thought there was an expensive no-trim version, and the "cheap"
one needed trimpots. Maybe I mixed that up with another device.
Now what's the remaining offset voltage (in dB's or % from full range)
of a trimpot-less 633 circuit ?

JH.