xy85061182
Newbie level 3
Hi,
I want to driver a Bootstrapped Switch Track and Hold circuit for a 250MHz input,so I use a source follower for high linearity,and use another source follower to dirver the drain,but the SFDR is bad because the third Harmonic is high.Can anybody tells me how to modify the circuit or the related information.I don't want to change the application environment and the tail current.Thanks.
I want to driver a Bootstrapped Switch Track and Hold circuit for a 250MHz input,so I use a source follower for high linearity,and use another source follower to dirver the drain,but the SFDR is bad because the third Harmonic is high.Can anybody tells me how to modify the circuit or the related information.I don't want to change the application environment and the tail current.Thanks.