MIXER CIRCUIT,申请号KR20057023894-传众专利搜索

MIXER CIRCUIT

申请公布号：KR20060017644(A)

申请号：KR20057023894

申请日期：2005.12.12

申请公布日期：2006.02.24

申请人：

KABUSHIKI KAISHA TOYOTA JIDOSHOKKI;NIIGATA SEIMITSU CO., LTD.;OHMI TADAHIRO

发明人：OHMI TADAHIRO;NISHIMUTA TAKEFUMI;MIYAGI HIROSHI;SUGAWA SHIGETOSHI;TERAMOTO AKINOBU

分类号：H01L27/092;H03D7/12;H01L21/8238;H01L29/04;H01L29/10;H03D7/14

主分类号：H01L27/092

摘要：A mixer circuit is configured by use of a CMOS transistor (800), which comprises a combination of a p-channel MOS transistor (840A) and an n-channel MOS transistor (840B) each including a semiconductor substrate (810A,810) having at least two crystal surfaces and also including a gate insulation film (820A) located on the semiconductor substrate and formed for the at least two crystal surfaces, wherein the channel width of a channel formed in the semiconductor substrate along the gate insulation film is shown by the total sum of the channel widths of channels formed for the at least two crystal surfaces. This configuration can reduce 1/f noise occurring in the transistor elements, DC offsets occurring in output signals due to variations of the electric characteristics of the transistor elements, and signal distortions based on a channel length modulation effect.