Re: Huge offset voltage with ADA4897-1

Simon,

The current bias on these amplifiers was indeed causing the large voltage offset at the output.  My source impedance is too high to use with the ADA4897; however, some of the amplifiers suggested by harryh proved to be better suited anyway due to the lower current noise spectral density (<1pA/rtHz at high frequencies).

Thanks for all of your comments,

Jason