[sdiy] LM13700 troubles yet again

Tim Ressel timr at circuitabbey.com
Wed Sep 20 21:09:02 CEST 2017


I am breadboarding the 4-Q Multiplier from EN and the 13700 datasheet, 
using the 13700 in place of the 3080. What I am seeing is incomplete 
cancellation due to distortion in the 13700, causing a minimum signal 
out of about 100-200mV. I patched up the same circuit using a 
13700-based VCA and an attenuverting mixer and got the same result: 
incomplete cancellation due to distortion.

I'm disillusioned with the 13700. It has given me nothing but problems.

--Tim Ressel
Circuit Abbey
timr at circuitabbey.com

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