公开(公告)号：US6034562A

公开(公告)日：2000-03-07

申请号：US442742

申请日：1995-05-17

申请人： Luis Augusto Bonet ,  Alan Lee Westwick ,  Mauricio Arturo Zavaleta ,  James Alan Tuvell ,  David E. Bush ,  Michael Dale Floyd

发明人： Luis Augusto Bonet ,  Alan Lee Westwick ,  Mauricio Arturo Zavaleta ,  James Alan Tuvell ,  David E. Bush ,  Michael Dale Floyd

IPC分类号： H03M1/00 ,  G05F1/62 ,  H02M3/07 ,  H04B7/26 ,  H04M1/00 ,  H04M1/73

CPC分类号： G05F1/62 ,  H02M3/073

摘要： A mixed signal processing system (22) includes digital (28) and analog (29) systems and is powered by a variable external voltage, such as a battery voltage. A voltage regulator (41) regulates the battery voltage to a nominal potential less than the battery voltage. The voltage regulator (41) provides the regulated voltage to a digital subsystem (51) of the digital system (28). A regulated charge pump (43) provides a voltage which is above the battery voltage and substantially constant due to regulation. The regulated charge pump (43) provides the regulated charge-pumped voltage to an analog subsystem (61) of the analog system (29) for better analog operation. A level shifter (44) equalizes signal levels between the digital (28) and analog (29) systems.

摘要翻译： 混合信号处理系统（22）包括数字（28）和模拟（29）系统，并且由诸如电池电压的可变外部电压供电。 电压调节器（41）将电池电压调节到小于电池电压的标称电位。 电压调节器（41）将调节的电压提供给数字系统（28）的数字子系统（51）。 调节电荷泵（43）提供高于电池电压并且由于调节而基本上恒定的电压。 调节电荷泵（43）将调节的电荷泵送电压提供给模拟系统（29）的模拟子系统（61），以实现更好的模拟操作。 电平移位器（44）使数字（28）和模拟（29）系统之间的信号电平相等。