Patent
Hysteresis Circuit Without Static Quiescent Current
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TLDR
In this paper, a hysteresis circuit including a comparator and a capacitive voltage divider circuit is proposed. But the comparator is powered by the input signal provided on the input terminal, and the voltage on the positive comparator input is greater than the reference voltage.Abstract:
A hysteresis circuit including a comparator and capacitive voltage divider circuit. The capacitive voltage divider circuit includes a first capacitor coupled between an input terminal and a positive comparator input, a second capacitor coupled between ground and the positive comparator input, and a third capacitor coupled between the comparator output and positive comparator input. A reference voltage is applied to the negative comparator input. The comparator is powered by the input signal provided on the input terminal. When the voltage on the positive comparator input is less than the reference voltage, the third capacitor is effectively coupled in parallel with the first capacitor. When the voltage on the positive comparator input is greater than the reference voltage, the third capacitor is effectively coupled in parallel with the second capacitor.read more
Citations
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References
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Patent
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TL;DR: In this paper, a method and apparatus for converting an analog input signal to a digital output signal, provide for simultaneously comparing the input signals to a sequential multiplicity of reference values representing a range of values of the input signal, and asynchronously processing digital results from simultaneous comparison to produce a digital representation of level crossings.
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