Could you tell me what is the input referred current noise of AD8656. I could not find the same from the data sheet where only the input voltage noise density is specified as 2.7nV/√Hz @ 10 KHz.

Thank you for you interest in using Analog Devices Product. We have an article about getting the input current density (http://www.analog.com/media/en/training-seminars/tutorials/MT-047.pdf [page 2]) which could apply to AD8656 because AD8656 is a CMOS Amplifier. The input current density of AD8656 is 1.8 fA/√Hz using the formula √(2I_{B}q)/ √Hz. Where I_{B} is the input bias current of the device (10 pA) and q is the charge of an electron (1.6 × 10^{-19} C).

Hi resmi,

Good day.

Thank you for you interest in using Analog Devices Product. We have an article about getting the input current density (http://www.analog.com/media/en/training-seminars/tutorials/MT-047.pdf [page 2]) which could apply to AD8656 because AD8656 is a CMOS Amplifier. The input current density of AD8656 is 1.8 fA/√Hz using the formula √(2I

_{B}q)/ √Hz. Where I_{B}is the input bias current of the device (10 pA) and q is the charge of an electron (1.6 × 10).^{-19}CThanks

Chard