Four quadrant multipliers:Results of my searching

[Paul Perry]

>> What does the 633 have that you cannot get with a RC4200,
>> a LM13700 or a 1496 ?
>> Right, I see, minimum part count. But you can solder a lot
>> of resistors in the time it takes to track down such a rare chip.
>For a DIY yes, but when in commercial buissness, no. Each trimmer is
>expensive then. Laser-trimming reduces the need.
>
If you want to make a ringmod without noticeable bleedthru with a 633,
you need trimmers, believe me.
And, if you want to do it with a LM13700, you need MORE thn trimmers,
you need a miracle (in my experience).

paul perry emlbourne australia