发明申请
- 专利标题： A/d Converter and A/D Conversion Method
- 专利标题（中）： A / D转换器和A / D转换方法
-
申请号： US11631844申请日： 2006-03-24
-
公开(公告)号： US20090040088A1公开(公告)日： 2009-02-12
- 发明人: Toshiaki Ozeki , Daisuke Nomasaki , Koji Oka
- 申请人： Toshiaki Ozeki , Daisuke Nomasaki , Koji Oka
- 优先权： JP2005-270172 20050619
- 国际申请： PCT/JP2006/305935 WO 20060324
- 主分类号： H03M1/38
- IPC分类号： H03M1/38
摘要：
In an A/D converter provided with an A/D converter circuit 101 for operationally amplifying an input signal and outputting an amplified signal, the A/D converter circuit 101 includes an initial value setting circuit 4a in addition to an amplifier 1a, a sub-A/D converter 2a, a sub-D/A converter 3a and capacitors C11 and C12. To ensure that the initial value of the output voltage of the amplifier 1a is a given voltage value close to the target value of operational amplification at the start of the operational amplification by the amplifier 1a, the initial value setting circuit 4a applies a given bias value equal to the given voltage value close to the target value to a next-stage capacitor C13 to be connected to the output side of the amplifier 1a. Such an A/D converter circuit 101 that can perform speedy convergence to the target value of operational amplification is used at each stage of a pipeline A/D converter.
公开/授权文献
- US07649487B2 A/D converter and A/D conversion method 公开/授权日：2010-01-19
信息查询
IPC分类:
