发明名称 |
High precision digital-to-analog converter with optimized power consumption |
摘要 |
A regulated charge pump circuit having two-way switching means that switches between a first feedback pathway that provides a precise and stable voltage output and a second feedback pathway that provides a regulated voltage output with low current consumption from the power source. The first feedback pathway maintains a precise voltage output by regulating a pass device that draws current to the voltage output. The second feedback pathway regulates the voltage output by controlling the connection of a clock input to the charge pump. A variable resistor is used to set the regulated level of the voltage output. A digital-to analog converter is formed by using a combination logic circuit to convert a digital input signal to a control signal for the variable resistor.
|
申请公布号 |
US6906576(B2) |
申请公布日期 |
2005.06.14 |
申请号 |
US20040753273 |
申请日期 |
2004.01.07 |
申请人 |
ATMEL CORPORATION |
发明人 |
SIVERO STEFANO;BEDARIDA LORENZO;FRULIO MASSIMILIANO |
分类号 |
G05F1/10;G05F3/02;H02M;H02M3/07;H02M5/42;H03M1/76;(IPC1-7):G05F1/10 |
主分类号 |
G05F1/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|