利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

3 条记录 (耗时 0.007 秒)

    CURRENT SENSING ANALOG TO DIGITAL CONVERTER AND METHOD OF USE
    1.
    发明公开
    CURRENT SENSING ANALOG TO DIGITAL CONVERTER AND METHOD OF USE 有权
    电流测量的模拟/数字转换器和使用方法

    公开(公告)号：EP1847003A4

    公开(公告)日：2009-04-29

    申请号：EP06718784

    申请日：2006-01-18

    申请人： ATMEL CORP

    发明人： GANGSTO GUNNAR ,  AAS ARNE

    IPC分类号： H02J7/00 ,  G01R22/10 ,  G01R31/36 ,  H03H17/04 ,  H03M3/02

    CPC分类号： H03M3/462 ,  G01R19/2509

    摘要： A current sensing analog to digital converter (CS-ADC) is disclosed. The current sensing analog to digital converter comprises a modulator adapted to sense a change in current and generate an oversampled signal. The converter further includes a decimation filter system coupled to modulator for removing out of band noise from the signal and reduce the data rate to achieve a high resolution signal. A current sensing analog to digital converter (CS-ADC) is disclosed that samples the charge or discharge current flowing through an external sense resistor R SENSE The sample from the R SENSE is processed by a delta-sigma modulator which generates an over sampled noise shaped sigrxal. From this signal a decimation filter system removes the out-of band noise and reduces the data rate to achieve a high-resolution signal. The CS-ADC also provides regular current detection. The regular current detection compares the data from conversion against charge/discharge threshold levels specified by the user. To save power a special mode where the user configures the regular current sampling interval is provided. This allows ultra-low power operation in power-save mode when small charge or discharge currents are flowing.