OPA454: OP AMP OPA454

user4210376

Unfortunately we do not have any parts that meet your voltage/bandwidth requirements.

It's possible to have multiple gain stages to stay within bandwidth requirements, but this introduces added cost and more gain error.

Regards

Dennis

Hi Dennis,

Thanks for your replay.Would you please give me some advises on how to  multiple gain stages ?

Well a 100V output at 1MHz is kind of hard to come by and TI does not have a part there it seems, 

I was already working on a different project using a device that might suit you  - you might look at the Apex PA107, I had managed to import its model into TINA (attached) but I was noticing it seemed like the slew rate was simulating much lower than the 2500V/usec specification - I used offset supplies here, which I think will be ok,but you should confirm that. The small signal gain of 20 response is 11Mhz, 

I had to slow the 0 to 5V 1MHz square wave input down to 50nsec edge, still slew limiting it looks like - in sim, that output 2000V/usec should be in spec for better shape (less overshoot)

Here is the TINA file, 

PA107 gain of 20 100V step.TSC

Also, I was just kind of guessing you wanted a 0 to100V 1Mhz square wave. Whatever you actually want, keep in mind a 100V transition is going to need some slew rate - the OPA454 is extremely low on slew rate. The PA107 says it is 2500V/usec, but the model produces 1000V/usec.