• ### RE: Design analysis of ADA4841-1

1. With the range specified, the peak-peak voltage will be (4.974 - 0.029) = 4.945Vpp. This is equivalent to ~98.9% of the AD7942 input range (assuming VREF = 5V).
Just be aware that these output swing numbers…

• ### VCM voltage connected to IN+ of ADA4841

Hi,

I am using ADA4841 amplifier and AD7942 ADC  in my project. I was referring to the EVAL-AD7942-PMDZ evaluation kit. I would like to know why input common mode voltage is connected to IN+ pin of ADA4841 with capacitor and resisitor. Can someone please…

Hello! In datasheet i couldn't find information about maximum voltage between Vs- and Vs+. I suppose it should be 24 V, but have concern about it.

I want to use OpAmp with -10V for Vs- and +5V for Vs+.

Hi,

We have Rail-to-Rail amplifiers and you can check through this link.
One of the filtered parts is ADA4084 which operational from 3V to 30V.

Thanks and regards!

• ### ADA4841-1 0.1Hz to 10Hz noise

Hello,

Are there any information available for ADA4841-1 about the voltage noise density vs. frequency in the range 0.1Hz to 10Hz?

If not, are there information available about the 0.1Hz to 10Hz voltage noise (peak-peak)?

I will use the ADA4841-1 as a…

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Thank you,

The datasheet for the ADA4841 says that the exposed paddle of the LFCSP package should be connected to ground (Figure 3 on first page).  In a split supply design is that Ground (0V) or is it the negative supply?

之後在輸入端+IN跟-IN兩點並上10K電阻，當輸入端沒接電壓時，量到的是則變成0.03V左右，但它仍然沒辦法達到軌到軌，

參考電壓在5V情況下，輸出電壓仍然只有4.3V。