公开(公告)号：JP5541848B2

公开(公告)日：2014-07-09

申请号：JP2008138177

申请日：2008-05-27

申请人： フリースケール セミコンダクター インコーポレイテッド

发明人： 周 村山

IPC分类号： G01P15/125 ,  G01P15/18 ,  G01P21/00

CPC分类号： G01P15/18 ,  G01D3/02 ,  G01P1/006 ,  G01P15/125

公开(公告)号：JP5257897B2

公开(公告)日：2013-08-07

申请号：JP2009132495

申请日：2009-06-01

申请人： フリースケール セミコンダクター インコーポレイテッド

发明人： 周 村山

IPC分类号： H03F1/30 ,  G01P15/125 ,  G01P15/18 ,  H03F3/34 ,  H03F3/70

CPC分类号： H03F3/45928 ,  H03F3/005 ,  H03F3/45475 ,  H03F2200/447 ,  H03F2203/45512 ,  H03F2203/45514 ,  H03F2203/45586 ,  H03F2203/45588

摘要： An output circuit that occupies a small area includes a control unit, X, Y, and Z axes amplification units, and first and second common circuits. The control unit outputs a temperature coefficient offset for correcting the temperature dependence of a sensor output. The first and second common circuits use the output from an acceleration sensor when performed amplification for each axis. In a reset phase, the charge accumulated in the first and second common circuits is released. In an amplification phase, the first and second common circuits and an operational amplifier uses the temperature coefficient offset voltage of each voltage to correct and amplify a signal from the acceleration sensor. In a hold phase, the accumulated charge is maintained in the same state to hold the output value of each axis.