View ka331 datasheet:

www.fairchildsemi.com KA331 V-F Converter Features Description � Guaranteed linearity: 0.01% max. This voltage to frequency converter provides the output � Low power dissipation: 15mW at 5V pulse train at a frequency precisely proportional to the � Wide range of full scale frequency: 1Hz to 100KHz applied input voltage. The KA331 can operate at power � Pulse output compatible with all logic forms supplies as low as 4.0V and be changed output frequency � Wide dynamic range: 100dB min at 10KHz full scale from 1Hz to 100KHz. It is ideally suited for use in simple frequency low-cost circuit for analog-to digital conversion, long term integration, linear frequency modulation or demodulation, frequency-to-voltage conversion, and many other functions. 8-DIP 1 Internal Block Diagram