super nice transconductance amplifiers

[Paul Perry]

At 09:16 AM 3/10/97 CST6CDT, CGS2510.SEP.STUDENT.UCA at CUB.UCA.EDU
(cool name!) wrote:

>> Analog Devices 633JN low-cost multipliers ($6.20), and they couldn't
>Since when was $6.20 low cost.  You can make a very fine ring mod 
>from two LM13700's and a couple dual op-amps and
>$.73 + 2X $.35 + resistors < $6.20

......well , you have the edge on me there....admittedly the VCO made
from the LM13700 is nice enough but buggered if i can make a balanced
multiplier from one without excessive bleedthrough and for that matter 
noise (which when modulated by a LFO is VERY obtrusive)
I'd gladly pay a couple bucks not have all those extra components, too...

.....not an expert, just hacking
paul perry melbourne australia