Education Library

Frequently Asked Question

Can I adjust the digital potentiometer for frequencies around 1MHz to 10MHz for adjusting the gain of a video signal?

It depends. Bandwidth is a function of the code and end-to-end resistance RAB. Lower RAB and codes yield higher bandwidth. 10MHz bandwidth or above is possible if you use a 1 kΩ version of AD8400 or AD5273 and limit your codes to a low value range. Please see datasheets for Bode plots.