Lm13720 Direct

is available from Texas Instruments and various distributors. If you'd like to dive deeper, I can help you with: for a VCA or VCO. Component matching tips to reduce distortion. Alternatives for modern, low-noise designs. What are you planning to build? lm13700.pdf - Texas Instruments

can be used to build resonant low-pass, high-pass, or band-pass filters where the cutoff frequency is swept by a CV. 3. Voltage-Controlled Oscillator (VCO) By controlling the charging current of a capacitor, the lm13720

Keep inputs below 1mA to avoid unhappy transistors. is available from Texas Instruments and various distributors

is an improved version of the older LM13600, offering several advantages for audio applications: Alternatives for modern, low-noise designs

can generate sine, triangle, and sawtooth waves for analog synthesizers. 4. Audio Compressors/Sustainers

If you’ve ever dabbled in building your own modular synthesizer, designed a compressor pedal, or experimented with voltage-controlled filters, you’ve almost certainly encountered the

Unlike a traditional Operational Amplifier (Op-Amp) that produces an output voltage proportional to the input, an OTA produces an output current proportional to the input voltage difference. The magic lies in the Amplifier Bias Current ( IABCcap I sub cap A cap B cap C end-sub