I am not sure whether this is the right place to ask my question.
I am looking for an analog multiplier chip which operate under 5V. Both of two inputs are analog sine signals with amplitude less that 1V. I searched several chips, but all of these operated from +/-4V ~+/-15V, including AD632/3, AD834, RC4200, MC1494, MLT04, mpy5/634, and MT09. Any suggestion? Thanks.
Thanks for your inquiry regarding analog multipliers. As you learned, there are no lowo voltage or single supplu multipliers, due to the semiconductor physics and approach to achieving multiplicaiton or division. This question comes up mor requently of late, so presents us with a new product challenge but we haven't responded as yet.
Depending on your needs, you can occasionally use a linear in amplitude variable gain amplifier, an example of this would be the AD8330, which is both single supply and low voltage. This type of device isn't 4 quadrabt, but if you really need a modulator it will work.
Other options would be to do it digitally, again depending on what your applicaiton is.