• FAQ: Operating the AD8362 Evaluation Board at Low Frequencies

    Q.

    I am having some problems getting the AD8362 evaluation board to work low frequencies (e.g. around 1-10 MHz). Do I need to make some changes to the evaluation board for operation in this frequency range?

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  • 检波器常见问题解答

    检波器常见问题解答 by adiadmin

    产品简介

     

    ADI的RF检波器可以精确地检测和测量RF或IF信号的幅度或功率，广泛使用在无线系统中。检波器分成两个大类，包括对数放大器/检波器和均方根（RMS）检波器。Log检波器可以测量高达100dB动态范围的信号，覆盖频率从低频到10GHz，检测精度可达0.2dB，非常合适接收信号强度指示（RSSI）和发射功率检测。RMS检波器可测量复数波形，如CDMA/WCDMA信号，高阶QAM调制信号。

    下面是相关的常见问题列表，下载文档可了解FAQ详细的内容…

  • ADI芯片辨识、型号查找

    看看截图：

    • attachment.pdf

  • RE: AD8307 - Detection of short burst with preceding filter delay

    It might not even respond at that low of frequency (it looks to be near 30 Hz).  The AD8307 will only have a couple of cycles to respond to in the time periods you are quoting above. What is your frequency(s) of operation?  I may be able to measure the…

    • AN-691.pdf

  • RE: Help with AD8302

    You should probably attenuate the reference signal a bit, down to 0.5 Vpp range.

    1MHz is a little low in frequency.  Take a look at the attached app note for low frequency operation of detectors.

    • AN-691.pdf

  • RE: AD8302 cap changes

    Please take a look at the attached app note.  Page 13 is section on the AD8302.

    • AN-691.pdf

  • RE: 为什么AD8302相位输出的结果是反的？

    您好！

    有几点需要检查一下。首先是基准电压VREF是否正常。还有就是信号经过耦合电容后是否影响相位。附件为使用AD8302应用于低频的应用笔记，供您参考。

    • AN-691.pdf

  • 检波器常见问题解答

    产品简介


    ADI的RF检波器可以精确地检测和测量RF或IF信号的幅度或功率，广泛使用在无线系统中。检波器分成两个大类，包括对数放大器/检波器和均方根（RMS）检波器。Log检波器可以测量高达100dB动态范围的信号，覆盖频率从低频到10GHz，检测精度可达0.2dB，非常合适接收信号强度指示（RSSI）和发射功率检测。RMS检波器可测量复数波形，如CDMA/WCDMA信号，高阶QAM调制信号。

    下面是相关的常见问题列表，下载文档可了解FAQ详细的内容。

    1. 何为RF检波器？

    2.

    …
    • attachment.pdf

  • RE: AD8302的输出不正确

    您好！

    输入引脚具有直流偏置电压，因此在输入引脚会测到直流电压，数据手册中描述如下，供您参考。

    The single-ended input interfaces for both channels are identical. Each consists of a driving pin, INPA and INPB, and an ac-grounding pin, OFSA and OFSB. All four pins are internally dc-biased at about…

    • AN-691.pdf

  • RE: AD8302可以检测500KHz信号的电压电流吗？

    您好！

    AD8302为射频功率检波器产品。如果想检测低频功率信号请参考应用笔记AN-691，请见附件。

    • AN-691.pdf