Semiconductor Technology Academic Research Center

Kirin Beer Kabushiki Kaisha

Kirin Holdings Kabushiki Kaisha

Osamu Kobayashi

Shoji Kawahito

Nobuyuki Hayashi

Hirotomo Ishii

Yasuhide Shimizu

Tetsuya Hirose

Yuji Osaki

Hidetaka Sone

Takahiro Miki

Takashi Morie

Hideyuki Tamakawa

Yumiko Tsuruya

Sung Wook Jung

A differential amplifier circuit includes a differential operational amplifier that includes a differential pair circuit and operates based on a constant bias current supplied from a bias current source circuit, and the differential amplifier circuit includes a bias current generator circuit. A current monitor circuit detects two currents flowing through the differential pair circuit in correspondence with differential input voltages inputted to the differential pair circuit, and detects a minimum current of the two currents for a difference voltage of the differential input voltages as a monitored current. A current comparator circuit compares the monitored current with the constant bias current. A current amplifier circuit amplifies a voltage corresponding to the comparison result, and controls currents flowing through the differential pair circuit based on an amplified voltage, and the bias current generator circuit performs negative feedback adaptive control such that the bias current increases as the monitored current decreases.

Differential amplifier circuit with ultralow power consumption provided with adaptive bias current generator circuit

A pipelined A/D converter circuit includes a sample hold circuit configured to sample and hold an analog input signal, and output a sample hold signal, and an A/D converter circuit including A/D converter circuit parts connected to each other in cascade, and performs A/D conversion in a pipelined form. The pipelined A/D converter circuit part of each stage includes a sub-A/D converter circuit, a multiplier D/A converter circuit, and a precharge circuit. The sub-A/D converter circuit includes comparators, and A/D convert the input signal into a digital signal of predetermined bits, a multiplier D/A converter circuit for D/A converting the digital signal from the sub-A/D converter circuit into an analog control signal generated with a reference voltage served as a reference value, sample, hold and amplify the input signal by sampling capacitors based on the analog control signal.

Pipelined A/D converter circuit provided with A/D converter circuit parts of stages each including precharge circuit

The present invention relates to DNA encoding novel xylitol dehydrogenase and a method for using the same. Specifically, the present invention comprises providing the nucleic acid sequence of a xylitol dehydrogenase gene fromand introducing this gene into a host organism, thereby producing a microorganism having the ability to utilize xylose.

DNA encoding xylitol dehydrogenase

Gene conferring flocculating property on yeast and gene product thereof

Growing community of inventors

Kanagawa, Japan

Osamu Kobayashi