Sc-integrator with switchable polarity

Details Sc-integrator with switchable polarity Sc-integrator with switchable polarity

1996-04-29

1997-11-18

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

By integrating

327336, G06G 764

Patent

active

056892063

ABSTRACT:
An SC-integrator comprises an amplifier connected to a circuit network, which includes an integrating capacitor and a storage capacitor. The storage capacitor is connected via a first switch to the output of the amplifier and via a second switch directly to one side of a switching circuit capacitor, which is also connected by means of third and fourth switches to ground and the inverting input of the amplifier, respectively. The other side of the switching circuit capacitor is connected by means of a fifth switch to an input voltage Vin, via a sixth switch to ground, and by means of a seventh switch to a reference voltage Vref. The SC integrator uses a storage capacitor of relatively low capacitance value, since the storage capacitor is connected in parallel with the switching circuit capacitor when effecting a reversal of the voltage polarity across the integrating capacitor.

REFERENCES:
patent: 4496858 (1985-01-01), Smith
patent: 5329191 (1994-07-01), Korhonen et al.
patent: 5331222 (1994-07-01), Lin et al.

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