Combined programmable gain amplifier and comparator for low power and low area readout in image sensor
AssigneeFoveon, Inc.
InventorsSundaraSiva Rao Giduturi, Glenn Jay Keller
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AssigneeFoveon, Inc.
InventorsSundaraSiva Rao Giduturi, Glenn Jay Keller
Estimating the term…
A switchable amplifier and comparator circuit includes an operational amplifier having an inverting input, a non-inverting input, a first differential output and a second differential output, the first differential output switchably coupled to the inverting input and the second differential output switchably coupled to the non-inverting input. A first feedback capacitor is coupled to the inverting input and switchably coupled to the first differential output, a second feedback capacitor is coupled to the non-inverting input and switchably coupled to the second differential output. A capacitive load is switchably coupled between the first differential output and the second differential output. A diode clamp circuit is switchably coupled between the first differential output and the second differential output. A resistive load is switchably coupled between the first differential output and the second differential output.
A switchable amplifier and comparator circuit comprising:
A method for downloading data from an imaging array into a single output circuit comprising a differential amplifier switchably configurable to be one of a correlated double sampling programmable gain amplifier and a comparator, the method comprising:
Dependencies are inferred from the claim text.