| 摘要 |
<p>A charge transfer device which includes a reference charge generator that generates a reference charge signal in response to receiving a control signal, first and second charge signal channels arranged to receive portions of the reference charge signal, and a charge distributor which distributes the reference charge signal between the first and second charge signal channels in accordance with a ratio determined by a differential input signal. The reference charge generator includes a source diffusion and a pair of gates each having respective potential wells electrically coupled to one another. The pair of gates generate the reference charge signal by extracting a charge packet from the source diffusion in response to having the control signal applied thereto, the charge packet being divided between the wells. The potential wells each include high conductivity regions defined by selected diffusions. The charge distributor includes a pair of barrier gates which are driven with the differential input signal. In exemplary embodiments of the invention, the charge transfer device is configured as a charge domain sample-and-hold circuit, a discrete-time amplifier circuit, a comparator circuit for discrete-time inputs and a magnetic field sensor circuit.</p> |
