• ADA4638-1

    Hi,

    I have to buffering a signal, derived from an AD8226 INAMP, using an opamp like the ADA4638-1.

    The INAMP is powered with +12V, while the opamp uses +3.3V because it's interfaced with an ADC that works in the range 0:3V.

    in the following table…

  • Question concerning SPICE-Model of ADA4638-1 Operational Amplifier

    Dear Community,

    recently I tried to simulate a simple non-inverting amplifier circuit with the ANALOG SPICE-Model of the ADA4638-1. According to the data sheet, this op amp should work with either a single supply that ranges from 4.5...30V or with a…

  • ADA4638-1作为电压跟随器,信号发生器作为输入,输出信号放大2倍

    下图是ADA4638-1作为电压跟随器的电路,电源为正负7V。

    用电压源作为输入时,输出电压正常,然而用信号发生器作为信号输入时,当信号为正弦1Vpp,1-10Hz时,跟随输出电压放大为2Vpp左右,并伴有明显的低通效果。

    同时发现在输入端接上示波器时,输出端示波器显示信号正常,增益为1倍。

    请问这是什么原因导致的?是信号发生器内有什么结构与跟随形成了什么特性吗?

  • ada4638


    I simulated the ada4638-1 in multisim and just a simple unit gain buffer connection. But the simulation result shows the offset voltage is as high as 126 uV when supply voltage is +-10V, which is quite different to the data sheet.

    Can anyone help me…

  • ADA4638: FAQs Temperature sensing Using Zero Drift Op Amps

    Q.

    I am looking for an op amp to signal condition a low frequency (<100Hz) temperature sensor. I need a high precision amplifier with good offset voltage and drift. What are the appropriate amplifiers that you recommend?

    --------------------------…

  • uV级信号检测使用了ADA4638,是不是不太合适。

    ADA4638的电压噪声是100nV*√,ADA4638的带宽是1.5M,放大100倍的时候,他的整个RTI是100*√(1.5M/100*1.57) = 15uV,这个噪声对uV级信号来说简直是灾难。

    不知道我这个分析的对不对啊?

  • .file_attr 1="1";

    Building a project imported from CCES 1.1.0 to 2.3.0 I get this error:

    [Error ea5004] "C:\Users\G\AppData\Local\Temp\acc3554de5a000\acc3554de5a001.s":659 Syntax Error in :
    .file_attr 1="1";
    syntax error is at or near text '1'.…

  • AD9523-1  Can I precisely adjust output clock frequency with AD9523-1 (EVAL-AD9523-1)?

    Greetings!

    I would like to inquire if it is possible to achieve precise frequency control with EVALZ - AD9531-1? I'm interested in generating a clock signal that is a multiple of femtosecond laser output pulse rate, which can be something close to 80…

  • Arduino UNO and ADXL345 getting 0 0 0 OR -1 -1 -1 outputs with SPI communication

    I have EVAL-ADXL345Z evaluation board from Analog Device hooked up to the Arduino UNO R3, the code complies and runs fine. At first I could still get…

  • LT8708 and LT8708-1