• 基准源ADR4550B的带负载问题

    请问用一路ADR4550B(Isc=10mA)分别产生+5V和-5V的基准电压,该两个基准电压后接AD8675的单位增益放大器。产生的VREFPS、VREFPF、VREFNS、VREFNF能否作为16路DAC AD5791的共同基准输入端。   LTSpice无ADR4550的模型,用ADR4525代替仿真。

  • RE: AD7779 High Noise when more 3 than Channels are Enabled

    Hi Marius,

    Do you a means to by-pass the power circuitry and apply the +/-1.65V externally?

    Have you measure with the scope the ADR4525 to make sure the reference is well stable?

    I guess all decoupling capacitors are as per datasheet recommendations?

  • RE: LTC2656 output noise sources

    Right now the design uses the REF5025 for its initial tolerance and DC stability, but its 1/f noise is actually pretty bad (comparable to the LTC2656's internal reference) so I'm considering either the LTC6655-2.5 or ADR4525 for their low noise esp. at…

  • RE: Is there a detailed Block diagram for the ADR130 reference voltage?

    Hi Fausto,

    Currently under ADR130 data sheet, I did not find block diagram but there is always an option to create one. Can you please provide what specific details you are looking for within block diagram?

    Below is an example of ADR4525 block diagram…

  • RE: ADuC7061 problem with erasing FLASH and ADC data

    Hi please find bellow drowings:

       microcontroller

    Digital side of power supply

    Analog side of power supply

    Power line isolation

    As you can see only +2.5A (power supply for analog circuits) doesen't have  additional decoupler. ADR4525 has…

  • RE: AD680 adding tow capacitor

    Hi, Osamu.

    According to the applications engineer of AD680, ADI does not guarantee the performance of AD680 when a capacitor is connected between the TEMP pin and ground because AD680 was not designed for that purpose.

    As alternative, you may try the…

  • AD4008的设计注意事项

    我用AD4008采集一个光电二极管转换电路,发现采集的数据干扰很大,似乎又很有规律,电路中采用ADR4525作为基准电压源,请问AD4008的设计有什么注意事项?这个是我采集的数据

    正常的波形应该是

  • RE: Use of TL431 for voltage reference of AD7683

    FormerMember
    FormerMember

    I would not even consider the TL431 with a 16 bit ADC;  you are just throwing money away.

    The TL431 is a commodity reference, with 50 ppm/C tempco.  So after your temperature

    changes by 10 degrees, you have less than a 14 bit system.   There is a noise…

  • RE: AD74413R error margin in voltage input mode

     

    • readback for the 5V measurement is 0xA6 7707 E9
    • How can I measure the reference voltage? ad-swio module uses the external reference with the ADR4525, it's selected by a jumper.
    • Now there is a problem, after I wrote 0xFFFF to ALERT_STATUS register…
  • AD7682 无法使用双极性模式

      根据AD7682中文手册,上面写的是支持伪双极性输入,现在工程上,VREF接的是外置ADR4525提供的2.5V,让COM接的是基准2.5V分压后的1.25V,IN0-IN3输入的电压范围是: -1.25 ~ 1.25.

    想请教一下大家,这种接法是不是有误?现在程序采样到的AD值根据不对应,而且随意跳动。。。