I want to convert single - ended input to differential ended for driving ADC. I have gone through datasheet of ADA4940-1 in which calculations are given to terminate single ended input. For known source impedance I am using LTC6252 as buffer. But LTC6252's output impedance varies with frequency and my application is for different frequency ranging from 1MHz to 10MHz.
So how can I terminate single ended input for ADA4940-1 without using variable resistor?