Hi

I have a question ADUM1250.

Is it possible to turn communication ON / OFF by turning ON / OFF the power supply to VDD 1 with FET?

Best Regards

HOD

Hi,

Is there any plan on offering an ATEX certified isolator for I2C like the ADuM1250? I checked the ADuM144x family but the buffers needed to pass the I2C signals from one side to another consume too much power for our application.

Thank you and best…

When I leave one side open (e.g. pins 1,2,3,4 or 5,6,7,8 not connected),

can I assume that SDA and SCL of the other side are off (high impedance)?

您好，

我想请问当我设计一个数模混合系统时，数字地与模拟地分开，数字信号跨平面时是否可以用这款芯片？因为可能有双向信号，所以ADUM1400那种就不行了。

另外看了ADI的一些技术文档，其中推荐混合器件的数字信号要隔离，我想知道这种隔离的效果可以有多大？比如我ADC隔离前后，对模拟信号的影响？可以量化么？比如量化成噪声？

在MT-031中得知，数据通过电阻跨分割就好了，时钟建议用BUFFER隔离，时钟用这类芯片隔离可以吗？数据是否也有必要用这类芯片隔离呢？这对ADC或DAC的精度是否有帮助呢…

I see ADUM1250 detasheet.

I find ADUM1250 include undervoltage lockout, the value is 2.5V (P10)

about　2.5V,

I want to know how much difference　with　temperture,sample differnt

(I understand that it is difficult to tell guarantee level,so please tell…

Hello

Our customer will use ADuM1250.

When he evaluates ADuM1250, input signal SCL1  is 400KHz pulse from  controller.

But,  its waveform is strange in  measurement result.

The waveform of output SCL2 shows long rising time.

(please refer to attachment)

I am investigating the ADUM1250/1251 devices for an I2C isolation application.

My concern is that it appears both VDD pins are considered to be supply pins because the datasheet lists a sink current for both VDD1 and VDD2.  If both pins are sinking current…

在使用ADUM1250的时候遇到一个问题，MCU提供的一个I2C接口，需要隔离挂载多个I2C接口的器件，MCU作为主机，其它器件作为从机。实现方法，MCU连接到ADUM1250的第1侧，同一个ADUM1250的第2侧连接到I2C总线上，该总线上并接挂载多个器件，这样设计是否可以？

     望ADI工程师或者有经验的朋友能给予解答，谢谢！

Can I cascade the ADUM1250 on a 400kHz I2C bus?

MCU - ADUM1250 - I2C slave1 - ADUM1250 - I2C slave2 - ...

If so, how many times?

Thanks, Koen.