IC V3340M
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The Coolaudio V3340M IC (CEM3340 clone) is a high precision Voltage Controlled Oscillator, featuring both exponential and linear control scales plus up to 4 buffered output waveforms: triangle, sawtooth, square, and pulse with voltage controllable pulse width.
Coolaudio clone of the CEM3340 VCO. SOP-16 package.
The datasheet can be found here.