Importance

Loading Importance Indicators...

Abstract

High speed of an analog-digital converter of a semiconductor device is achieved. A voltage quantizer circuit includes: a first comparator including a first input transistor inputting differential input voltages, and defining a value of a first bit of a digital signal; and a second comparator including a second input transistor being different from the first input transistor, and defining a value of a second bit of the digital signal. A correction code decision circuit decides a correction code for correcting a common-mode voltage of the differential input voltages, based on a conversion end signal output from the voltage quantizer circuit. A common-mode voltage regulator circuit regulates the common-mode voltage by adding or subtracting a corrected voltage based on the correction code to or from the differential input voltages.

Loading the Abstract Image...

First Claim