(AD740*)What is the difference between AD7400 & AD7401 & AD7402 &AD7403?

Hi !

Our customer have interesting in AD740*.

And they want know what is the difference between AD7400 & AD7401 & AD7402 & AD7403.

Can you explain the difference?

AD7401 is AD7400 external clock version.

AD7403 is AD7402 external clock version.

What is the difference between 1st generation and 2nd generation?

Best regards.


  • Hi Shane.

    Thank you for your answer.

    I understood your answer.

    Best regards.


  • 0
    •  Analog Employees 
    on Sep 23, 2015 6:15 PM


    You are correct in that the AD7401 and AD7400 are 1st generation and with the AD7401 being the externally clocked version and the AD7400 as the internally clocked.

    Similarly the AD7403 and AD7402 belong to the second 2nd generation with the AD7403 being the externally clocked version.

    The main differences between the 1st and 2nd generations are

    The 2nd generation has improved isolation ratings, working voltages, surge, creepage and clearance

    The 2nd generation has improved performance specifications such as SNR, THD, ENOB

    With regards to the AD7403-8 and AD7402-8 these are 8-pin versions which provide significant board area savings when compared to the 16-pin only versions in the 1st generation