公开(公告)号：US08330537B1

公开(公告)日：2012-12-11

申请号：US13051929

申请日：2011-03-18

申请人： Gururaj Ghorpade ,  Theertham Srinivas ,  D V J Ravi Kumar ,  Mehmet Aslan ,  K. Krishna Mahesh

发明人： Gururaj Ghorpade ,  Theertham Srinivas ,  D V J Ravi Kumar ,  Mehmet Aslan ,  K. Krishna Mahesh

IPC分类号： H03F1/02

CPC分类号： G01R31/024 ,  H03F1/0277 ,  H03F3/38 ,  H03F3/393 ,  H03F3/45183 ,  H03F3/45192 ,  H03F3/45695 ,  H03F3/72 ,  H03F2200/261 ,  H03F2200/331 ,  H03F2200/411 ,  H03F2200/78 ,  H03F2203/45366 ,  H03F2203/45396 ,  H03F2203/45614 ,  H03F2203/45616 ,  H03F2203/45644 ,  H03F2203/45726 ,  H03F2203/7221 ,  H03F2203/7236 ,  H03M1/1004 ,  H03M1/122

摘要： A rail-to-rail buffer receiving a differential input signal and generating a differential output signal includes first and second amplifier circuits configured in a pseudo differential buffer structure and first and second comparators coupled to compare the respective part of the differential input signal and a first voltage and to generate select signals. Each of the first and second amplifier circuits includes first and second complementary differential input stages and the first and second comparators generate respective select signals to turn on only one of the first or the second differential input stage in each amplifier circuit depending on a value of the respective part of the differential input signal. In operation, the first and second complementary differential input stages of each amplifier circuit not being turned on at the same time.

摘要翻译： 接收差分输入信号并产生差分输出信号的轨到轨缓冲器包括以伪差分缓冲器结构配置的第一和第二放大器电路，第一和第二比较器耦合以比较差分输入信号的相应部分和第一 电压并产生选择信号。 第一和第二放大器电路中的每一个包括第一和第二互补差分输入级，并且第一和第二比较器产生相应的选择信号，以根据所述第一和第二互补差分输入级的值，仅导通每个放大器电路中的第一或第二差分输入级中的一个 差分输入信号的各部分。 在操作中，每个放大器电路的第一和第二互补差分输入级不同时导通。

公开(公告)号：US08884629B1

公开(公告)日：2014-11-11

申请号：US13103894

申请日：2011-05-09

申请人： D V J Ravi Kumar ,  Theertham Srinivas ,  Gururaj Ghorpade

发明人： D V J Ravi Kumar ,  Theertham Srinivas ,  Gururaj Ghorpade

IPC分类号： G01R31/02 ,  H03M1/10 ,  H03M1/12

CPC分类号： G01R31/024 ,  H03F1/0277 ,  H03F3/38 ,  H03F3/393 ,  H03F3/45183 ,  H03F3/45192 ,  H03F3/45695 ,  H03F3/72 ,  H03F2200/261 ,  H03F2200/331 ,  H03F2200/411 ,  H03F2200/78 ,  H03F2203/45366 ,  H03F2203/45396 ,  H03F2203/45614 ,  H03F2203/45616 ,  H03F2203/45644 ,  H03F2203/45726 ,  H03F2203/7221 ,  H03F2203/7236 ,  H03M1/1004 ,  H03M1/122

摘要： A digital sensing device includes a sensor diagnostic system for detecting sensor fault conditions. The sensor diagnostic system including an input multiplexer applying a first burnout current or a second burnout current to a selected input channel and a near-rail detector configured to detect when an input voltage of the digital sensing device is near a positive power supply or near a negative power supply. The burnout current injection is applied without interfering with the sensor data. In other embodiments, the sensor diagnostic system may further include an overload detector configured to detect an overflow or underflow condition at the analog-to-digital converter. The sensor diagnostic system may further include a window comparator to detect when the ADC digital output is near a zero digital value. Finally, the sensor diagnostic system may further include a sensor flag generator to generate data flags indicative of sensor fault conditions.

摘要翻译： 数字感测装置包括用于检测传感器故障状况的传感器诊断系统。 所述传感器诊断系统包括对所选择的输入通道施加第一烧坏电流或第二烧坏电流的输入多路复用器和配置成检测所述数字感测装置的输入电压何时靠近正电源或接近正电源的近轨检测器 负电源。 在不干扰传感器数据的情况下施加烧断电流注入。 在其他实施例中，传感器诊断系统还可以包括被配置为检测模数转换器处的溢出或下溢条件的过载检测器。 传感器诊断系统还可以包括窗口比较器，用于检测ADC数字输出何时接近零数字值。 最后，传感器诊断系统还可以包括传感器标志发生器，以产生指示传感器故障状况的数据标志。