Frequency-to-Voltage Converter based on Integrators
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Abstract
An analog frequency-to-voltage (F/V) converter based on the use of integrators and sample and hold technique is presented. The proposed scheme offers numerous favorable characteristics as the resulting circuit linearly converts a signal frequency into a smooth output with remarkably rapid response and the maximum operating frequency at about 30 kHz. In contrast to the recently proposed converter, the method does not employ a monostable multivibrator for controlling switches, but rather clock pulses from a zero crossing detector. Therefore, good accuracy is achieved as a result of precision in time-determination during output sampling. The method can also be easily modified in a complete switched-capacitor version.
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