Texas Instruments Corporation

Texas Instruments Incorporated Deutschland, Gmbh

Frank Ohnhauser

Andreas Wickmann

Mikael Badenius

A method for analog-to-digital conversion is provided using successive approximation and a plurality of capacitors including a first set of capacitors and a second set of capacitors, a first side of each of the plurality of capacitors being coupled to a common node. The method includes sampling an input voltage on the first set of capacitors, after the step of sampling leaving a side of at least one capacitor of the first set of capacitors floating, coupling a capacitor of the first set of capacitors, which is not floating, with a capacitor of the second set of capacitors so as to redistribute the charge on the coupled capacitors, comparing the voltage on the common node with a comparator reference voltage level to receive a comparison result to be used for a bit decision, and switching the floating side of the floating capacitor of the first set of capacitors to either a first reference voltage or a second reference voltage in accordance with the bit decision.

SAR analog-to-digital converter with large input range

A window comparator comprising a single comparator circuit that has a positive input, a differential negative input, and an output, wherein limits of a window are defined by a reference voltage and a window condition is defined for a differential voltage between a positive input voltage and a negative input voltage so that the differential voltage is within the limits of the window; including a common mode voltage, a first set of two switched capacitors connected to the positive comparator input, a second set of two switched capacitors connected to the negative comparator input, a switching array capable of assuming a plurality of different switching conditions, and detecting the output of the comparator in relation to the switching conditions of the switching array.

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Stein, Germany

Frank Ohnhauser