• ADR441 - Additional Noise Data Requested

       Good morning.  I have a customer currently using the ADR421 as a voltage reference in multiple projects.  The spec on this part indicates 1/F noise of 1.75uV and noise of 80nV/√Hz @1KHz.  The noise graph shows that about same noise is present in the bandwidth…

  • 请问ADR445输出怎么是5.9V左右,ADR441输出怎是3.6V左右?

    电路图如附件,我开始用15V的输入,输出是5.9V,换成12V的输入输出还是5.9V左右,只有当出入是5.2V时,输出才是5V,不知道为什么?用ADR441,输出是3.6V左右,而且输入电压越大输出也就越大?ADR445的输出我用示波器测了,尽然是锯齿波?

    另为手上有一个是TI公司的REF102,直插的,输出10V很稳定。

    还请ADI公司工程师能帮解释一下,难道是我的电源文波大的缘故??

  • 请问ADC的低噪声基准电压ADR441的TRIM脚可以悬空吗?

    我在做一个24位ADC数据采集,想用ADR441产生低噪声基准电源。该芯片有一个TRIM脚,手册上说可以用来用户调节0.5%的输出。我的电路板尺寸有限,可以直接将这个脚悬空吗?

  • About reference for  AD7176-2

    Hi there,

    I have questions about AD7176-2.

    According to the datasheet, there are some recommended external reference like ADR441.

    #1,Do you think it's fine to use one piece of ADR441 for two or three pieces of AD7176-2?

    #2,About the current load…

  • RE: Tailoring the AD7173-8 ADC input range

    Hi James,

        The ADR441 has a voltage noise of 1.2uVp-p and a 48nv/rtHz of voltage noise density. The AD7173-8 has an available internal buffer for the internal reference. Using a resistor divider to have a 1.1V to ADC Ref pin maybe suitable, since the…

  • RE: ADR421- Can the IC clamp current or sink current at its output.

    Hi Kiranlal,

    You can also use ADR441 and ADR431, this has the MSOP package option and still pin to pin compatible with ADR421.

    Regards,

    Mon

  • 关于ADR4525

    ADR441高温时输出电压漂移过大,ADR4525可以解决它的问题吗?或者有什么其他的基准电压源替代推荐?

  • Comment on ADR445 User Trim Model LTSpice

    Hello. Just wandering - how accurate this model is? My simulation results are quite a bit different from what I see with the actual part on my board. Also, is the similar model available for the 2.5V version (ADR441)? Thanks! 

  • RE: 这11大应用领域,你在里面么?

    我最关注仪器仪表与测量,由于本人从事测量仪器仪表产品研发,经常使用ADI公司的精密放大器、ADC、DAC、电压基准,ADR441低噪声、低温漂基准广泛使用在高精度仪器仪表中。

  • RE: Internal ADC reference selection

    on customer board, there usually will be no jumpers to allow connect the external reference to the VREF0/1 pins mannually, so there is a conflict:

    1) after power up, it is configured to be internal reference by default.

    2) while the board is expected…