公开(公告)号：EP2524425A1

公开(公告)日：2012-11-21

申请号：EP11732032.5

申请日：2011-01-03

申请人： Microchip Technology Incorporated

发明人： KOBAYASHI, Bun ,  SCHELL, Steven, W. ,  KIM, Yonghan, Chris ,  CHOW, Pei-Ming, Daniel ,  CHANG, MAU-CHUNG, Frank

IPC分类号： H03F3/00

CPC分类号： H03F3/195 ,  H03F1/0261 ,  H03F1/0277 ,  H03F1/302 ,  H03F1/34 ,  H03F3/72 ,  H03F2200/144 ,  H03F2200/18 ,  H03F2200/27 ,  H03F2203/7206 ,  H03F2203/7236 ,  H03G1/0035

摘要： A step gain amplifier has an amplifier with an input and an output, and a bias circuit connected to the input and to a bias node. A passive feedback circuit using only passive elements connects the output to the input. A control circuit is connected to the bias circuit at the bias node.