EXPONENTIAL_DIGITALLY_CONTROLLED_OSCILLATOR

Published:2009/7/5 22:27:00 Author:May | From:SeekIC

The microprocessor-controlled oscillator has a 8159 to 1 frequency range covering 2.5 Hz to 20 kHz. An exponential, current output IC DAC functioning as a programmable current source alternately charges and discharges capacitor between precisely-controlled upper and lower limits. The circuit features instan-taneous frequency change, operates with ＋5 ±1 V and -15 V ±3 V supplies, and has the dynamic range of a 13-bit DAC.



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