# high voltage amplifier

hi, everyone,

i'm new here. I'm trying to find an amplifier which has the requirements as below. Could you please give me any suggestion? Thank you very much.

(the input is a sinusoidal signal with voltage 3.3v and freqency 10Mhz.)

output voltage: 50v~60v

bandwidth: 100 Mhz.

Thank you very much!

Harry

• Hello Harry,

You said the input has a BW of 10 MHz but want the output to have 100 MHz BW. Is this a typing mistake or do you really want more output BW than the BW of the input?

This sounds like an ET application. Is it?

How much current are yo trying to drive out of this amplifier?

Are you trying to drive a heavy load directly or are you trying to drive a FET?

Need to know more about the application to be able to pick an appropriate part.

Regards,

Zoltan

• Hi, Thank you very much for your reply!

The project is about ECCMD (Electron Multiplying CCD). I'm trying to drive a heavy load. The bandwidth requirement is 100 MHz while the input sinusoidal wave is only 10 MHz. The reason is that according to my test results, the output is not sufficiently good even with a 20 Mhz amplifier. Thus, I set a much higher requirement.

The input current is 100 mA. So the power is 5 watt.

Harry

• Hello Harry,

To output a 60V, 100 MHz sine wave  an amplifier needs to have a slew rate of 37680 V/us. This number is not a typo, It is in excess of 37 thousand V/us. This is extremely difficult, impossible for all practical purposes. You need to lower your requirements.

How about 50 MHz BW with output current in excess of 700 mA (peak output current >1A) and output voltage swing of 36V pp?

This output voltage swing can be from 60V down to 24V or from 80V down to 44V as examples.

Zoltan

• Dear Sir,

Thank you very much for your reply. There is the request:

input:  a 0.65v sinusoidal wave with f=10Mhz

output: 45v -60v, no damage to the waveform.

There might be some other solutions than an amplifier. And we are trying to find a right way.

Best regards,

Harry

• This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,