Techniques for signal measurement using a conditionally stable amplifier
    2.
    发明授权
    Techniques for signal measurement using a conditionally stable amplifier 有权
    使用条件稳定放大器进行信号测量的技术

    公开(公告)号:US06891430B1

    公开(公告)日:2005-05-10

    申请号:US09695706

    申请日:2000-10-25

    IPC分类号: H03M3/00 G06G7/12

    摘要: A signal processing integrated circuit has having a chopper stabilized, multistage, feedforward amplifier and a delta sigma analog to digital converter. Filtering of the output of the output from the analog to digital converter comprises a sinc5 filter and a sinc3 filter. The sinc3 filter may be bypassed. A rough buffer permits quick charging of a sample and hold capacitor during part of the charge cycle and slower but more accurate charging during the remainder of the charge cycle.

    摘要翻译: 信号处理集成电路具有斩波稳定的多级前馈放大器和ΔΣ模数转换器。 从模数转换器输出的输出的滤波包括​​一个Sinc&lt; 5&gt;滤波器和一个sinc&lt; 3&gt; 3滤波器。 可以绕过sinc <3> 3滤波器。 一个粗略的缓冲器允许在充电周期的一部分期间快速充电一个采样和保持电容器,并且在充电周期的剩余时间内可以进行更慢但更精确的充电。

    Internal node offset voltage test circuits and methods
    3.
    发明授权
    Internal node offset voltage test circuits and methods 有权
    内部节点偏移电压测试电路及方法

    公开(公告)号:US06885211B1

    公开(公告)日:2005-04-26

    申请号:US10117374

    申请日:2002-04-05

    IPC分类号: G01R31/28 G01R31/26

    CPC分类号: G01R31/2837

    摘要: A method of testing an integrated circuit includes setting a guardbanded limit for a parameter associated with an embedded node, a deviation from the guardbanded limit under a set of test conditions correlated with a failure of the integrated circuit across a range of operating conditions. A test is performed under the test conditions to detect deviations of the parameter from the guardbanded limit to detect failures of the integrated circuit over the range of operating conditions.

    摘要翻译: 一种测试集成电路的方法包括设置与嵌入式节点相关联的参数的保护限值,与在整个操作条件范围内的集成电路的故障相关的一组测试条件下的保护带限制的偏差。 在测试条件下进行测试,以检测参数与防护带限制的偏差,以检测集成电路在工作条件范围内的故障。