OTA Tutorial by Eugene M. Zumchak See also: Harris Semi's datasheet and App Note #AN6668 "Applications of the CA3080 and CA3080A high-performance Operational Transconductance Amplifiers" Parts Substitution Information FatMan The Unofficial Searchable Synth-DIY Archives LFSR Feedback Taps to 168 bits My Stuff: Voltage Controlled State Variable Filter with Nonlinear Feedback A 4069 based Triangle LFO A CMOS Sawtooth to Triangle Converter An experimental CMOS VCF (Sallen-Key) UNTESTED Semi CMOS Triangle VCO PCSYNTH Project