公开(公告)号：US20070182495A1

公开(公告)日：2007-08-09

申请号：US11350509

申请日：2006-02-09

申请人： Ravindar Lall

发明人： Ravindar Lall

IPC分类号： H03L7/00

CPC分类号： H03K3/0231

摘要： Systems and methods are disclosed herein to provide improved oscillator techniques. For example, in accordance with an embodiment of the present invention, an oscillator includes at least a first current source to generate at least a first current for capacitors that provide input signals for corresponding comparators. The comparators compare the input signals to reference signals and provide the results to a latch, which provides an oscillator output signal and controls the charging and discharging of the capacitors that provide the input signals.

摘要翻译： 本文公开了提供改进的振荡器技术的系统和方法。 例如，根据本发明的实施例，振荡器至少包括第一电流源，以产生用于为相应比较器提供输入信号的电容器的至少第一电流。 比较器将输入信号与参考信号进行比较，并将结果提供给锁存器，其提供振荡器输出信号并控制提供输入信号的电容器的充电和放电。

公开(公告)号：US5670907A

公开(公告)日：1997-09-23

申请号：US403595

申请日：1995-03-14

申请人： James Gorecki ,  Ravindar Lall ,  Robert B. Lefferts

发明人： James Gorecki ,  Ravindar Lall ,  Robert B. Lefferts

IPC分类号： H01L27/04 ,  G05F3/20 ,  G05F3/26 ,  G11C5/14 ,  G11C11/408 ,  H01L21/822 ,  H02M3/07 ,  H03K19/094 ,  G05F1/10

CPC分类号： G11C5/146 ,  G05F3/205 ,  G05F3/262 ,  H02M3/07

摘要： An embodiment of a pumped substrate system includes an oscillator, capacitive pump, comparing circuit, and a level shifter. The level shifter is coupled between the substrate and the positive input lead of the comparator and shifts the voltage level present on the substrate by a voltage Vbg. The comparator compares ground potential to the shifted substrate voltage. The oscillator, capacitive pump and comparing circuit form a negative feedback loop which operates to maintain the substrate voltage substantially equal to -Vbg. In one embodiment, the level shifter includes a band gap reference.

摘要翻译： 泵浦衬底系统的实施例包括振荡器，电容泵，比较电路和电平转换器。 电平移位器耦合在比较器的衬底和正输入引线之间，并且通过电压Vbg将存在于衬底上的电压电平移位。 比较器将接地电位与移位的衬底电压进行比较。 振荡器，电容泵和比较电路形成负反馈回路，其操作以将衬底电压维持在基本上等于-Vbg。 在一个实施例中，电平移位器包括带隙基准。