Category: Datasheet/Specs
Product Number: AD9695
Dear ADI Experts,
According to AD9695 datasheet, the common-mode voltage is 1.41V. The actual measured value at analog input pins on my board is around 1.44V
Then, I follow the recommended procedure for dc-coupled application as attached partial datasheet to set "0x1908, Bit 2 to 1" to disconnect the internal-mode buffer.
The voltage measured at analog input pins changes from 1.44V to 1.16V.
I also set register 0x18E3, Bit6 to 0x01 to turn on the VCM export, the voltage measured on VREF pin is 1.39V.
There are no external components(modulator, amplifiers) to the analog input pins of AD9695.
Is the voltage variation at analog inputs normal?
Your comments will be much appreciated.
