• Inquiry about the design of the AD9258 and the ADA4937-1

    Hello,

    My customer will use ADA4937-1 and AD9258 at repeater application.

    1. Input voltage range of the Vocm pin in the ADA4937-1 is min 1.2V to max 3.8V. However, the VCM output of the AD9258 is 0.9V.

        The voltage ranges between the Vocm pin and the…

  • ADA4937-1 drive AD9284

    Hi there,

    My customer is designing ADA4937-1 to drive AD9284 for his project. He follow AD9284-250EBZ schematic design, however there are some questions.

    1) In EVB circuit, ADA4937-1 IN+ & IN- are swapped compared to Fig19 in AD9284 DS. Is there any…

  • Diff-Amp Calculator has a problem with ADA4937?

    Trying to run simulation on ADA4937 with Diff-Amp Calculator, and no matter what the input or gain is, it thinks the input is clipped. What's going on?

  • Request Schematic Review about AD9258-125 and ADA4937-1

    Hello,

    My customer request your confirmation about their schematic.

    They used AD9251-65 and ADA4937-1 to LTE ICS Repeater.

    But now they want to change ADC from AD9251-65 to AD9258-125.

    As you know, these two devices are pin compatible, so they want…

  • Request the schematic review with AD9251-80 and ADA4937-1

    Hi,

    My customer wnats to get your advice about their schematic with AD9251-80 and ADA4937-1.

    They used AD9251-65 and ADA4937-1 in their system, but now they will change the sampling frequency of their system.

    So they need your help.

    The sampling frequency…

  • RE: Questions for LTC6811-1, LTC6812-1

    Dear Abhishek,

    Thank you for your kind answer.

    But additionaly my customer asks that they want to know the maximum power specification of Zennor diodes in LTC6812-1 and LTC6811-1.

    (Its zennor diodes are located inside of LTC6812-1 and LTC6811-1 and Cx…

  • ADA4937-1的问题

    我的电路图如上图所示,其中ADA4937-1输出端的电阻应该是0欧姆。

    两个运放电路一模一样。

    我现在的问题是,不供任何信号,就这样的电路,加上电后,频谱仪设置为0-100MHz,幅度为-120~-20dB。

    这个时候就可以看到,70MHz附近会有个一些信号抬起来。大概比噪底-70dB提高5dB左右。

    实在找不到原因。

    另外还有一个问题。调制器IQ数据的滤波电容改成560pF对100MHz带宽数据有没有影响?

  • LTM4650AIY-1#PBF vs LTM4650AIY-1#3NSPBF

    Could anyone explain what 3NS means on part numbers such as LTM4650AIY-1#PBF vs LTM4650AIY-1#3NSPBF ?

    I cannot find any information.

    thank you

  • "AD5940_WriteReg(REG_AFE_SWMUX, 1<< 1) " is Valid?

    HI.

    I have a question about some code in BATImpedance.cpp.

    ------------------------

    AD5940_WriteReg(REG_AFE_SWMUX, 0);

    or 

    AD5940_WriteReg(REG_AFE_SWMUX, 1<< 1);

    -----------------------

    In the datasheet REG_AFE_SWMUX  (0x0000235C)

    [2:0] reserved , 

  • RE: LTC6363-1 replacement LTC6363-1 replacement LTC6363-1 replacement

    Hi Mamzi,

    Have you checked on our authorized distributors? What package do you need?

    You can check Analog Devices' parametric search for single-ended to fully differential amplifiers

    Single-Ended to Differential Amplifiers Fixed Gain Selection

    Regards…