• RE: ADXL278 power supply

    Hi Wang,

    The ADR4550 will be suitable for your application.  The source has to be higher than the current consumption of the ADXL278 (~2.9mA).   The ADR4550 sources 10mA, so that provides a good margin.  The load capacitance affects the stability of the…

  • AD5864R vs AD5864 with ADR4550

    Is there any advantage to use the external reference, taking in account I will very likely have an ADR4550 on board anyway on board serving other components? On the other hand AD5864R's reference may save routing and a bypass capacitor.

    Additional…

  • ADR4550 LONG-TERM DRIFT

    why we give ADR4550 LONG-TERM DRIFT test result under 60°C? How about the result under 25°C?

  • RE: 这11大应用领域,你在里面么?

    我是做检测的最关注的,仪器仪表测量ADR4550 

  • RE: REF02A Input Voltage from a SMPS

    Hi Harry, first, thank you for taking the time to answer my question.

    I'm currently reading the datasheet for the ADR4550.

    The switching frequency is 337kHz.

    Brian

  • ADR4550输入电压范围

    使用低温漂高精度低噪声基准电压芯片ADR4550,输出5V基准。

    在datasheet中看ADR4550的输入电压是5.3V-15V(根据负载最低压差波动,最大10mA时不超过5.5V)

    可实际电路中,供电5.5V输出只有4.19V,要供电7V左右时才会输出5V

    以为买到假芯片了,换了几家都是一样的,有人遇到这个问题吗?

  • 参考电源ADR4550对输入电源的噪声抑制问题

    ADR4550的输出为传感器供电,ADR4550的输入电源为金升阳的电源模块,示波器显示该电源模块的输出噪声峰峰值在200mv左右,而经过ADR4550稳压后输出电源噪声没有任何改变,依然为200mv左右,导致传感器精度急剧降低。将电源模块去掉,直接采用线性电源输入,噪声降低为10mv,ADR4550的输出噪声依然和其输入电源噪声一致。

    现想咨询下:

    1、ADR4550为何没有起到对电源噪声抑制的功能?

    2、ADI可否提供一个对外部9~36V输入电源的噪声抑制方案

  • Comment on High Precision Voltage Source

    BTW, compared with LTZ1000A, what do you think about the high-voltage reference source such as AD688 and/or ADR4550 ? I found that AD688 is a high precision, low drift (max TC is 1.5ppm/C) voltage reference which provides a +- 10V voltage reference…

  • RE: ADR4550用9V电池供电,但接上后,电压被拉低到4V左右,什么原因呢?

    ADR4550,超低噪声、高精度 基准电压源,用作三端稳压芯片,好奢侈的说。。。

    Vin max = 15V, 9V OK;输出空载还是带载了的?作为基准源,它的Iout不大于10mA,烦请确认负载电流。

  • recommended ADC driver, external reference and reference buffer options?

    What are the recommended ADC driver, external reference and reference buffer
    options?

     

    The AD7961 datasheet recommended ADC drivers are the two single-ended op amps
    ADA4899-1 and AD4897-1 or differential amplifier ADA4932-1. The low-noise,