A seven-octave LPVCO comprises Q1 Q2 antilog pair that converts the 0 V to 5 V V_IN, to a 1 µA to 128 µA I_C2, for a proportional 2⁷ = 128:1 change in C1 ramp rate and U1 oscillation frequency. Counter U2 then sc

Authors	Stephen Woodward
Main Document	Article «Seven-octave linear-in-pitch VCO»
Description	Figure 1
File Format / Size	PDF / 21 Kb
Document Language	English

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A seven-octave LPVCO comprises Q1 Q2 antilog pair that converts the 0 V to 5 V VIN, to a 1 µA to 128 µA IC2, for a proportional 27 = 128:1 change in C1 ramp rate and U1 oscillation frequency. Counter U2 then sc