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US 7,405,690 B2Granted
Analog-to-digital converter
AssigneeSanyo Electric Co., Ltd.
InventorsShigeto Kobayashi, Kuniyuki Tani
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AssigneeSanyo Electric Co., Ltd.
InventorsShigeto Kobayashi, Kuniyuki Tani
Estimating the term…
An A-D converter includes a first amplifier circuit, an A-D converter circuit, a D-A converter circuit, a subtraction circuit, a second amplifier circuit, a timing control circuit, a type control unit, an output unit. The type control unit sets the type of the A-D converter circuit at the time of conversion to the higher 4 bits, to a type in which either one of an analog signal or a reference voltage is inputted selectively to a comparator via a capacitor. The type control unit performs a control so that the type of the A-D converter circuit at the time of conversion to values of the higher 5th to 7th bits and the higher 8th to 10th bits from the most significant bit, to a type in which an analog signal and a reference voltage are inputted fixedly to a comparator without involving a capacitor.
An analog-to-digital converter, which converts an input analog signal to a digital value of a predetermined number of bits, the analog-to-digital converter characterized in that it is configured to be operable by a first mode and second mode wherein the first mode is such that an analog signal is inputted, via a capacitor, to a comparator included in said analog-to-digital converter and the second mode is such that an analog signal is inputted, without involving a capacitor, to a comparator included in said analog-to-digital converter.
An analog-to-digital converter, which converts an input analog signal to a digital value of a predetermined number of bits as a result of a plurality of conversions, the analog-to-digital converter comprising:
An analog-to-digital converter, which converts an input analog signal to a digital value of a predetermined number of bits as a result of a plurality of conversions through a plurality of stages connected in series, wherein the plurality of stages include:
Dependencies are inferred from the claim text.