Author Topic: 10V 100mA fast edge pulse amplifier...what are the options ?  (Read 789 times)

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Offline chipeaterTopic starter

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10V 100mA fast edge pulse amplifier...what are the options ?
« on: March 04, 2023, 09:22:34 pm »
Hello,

By coincidence, I came across the documentation of this AOP : AD8009.
Among the applications, it talks about pulse amplifier.

It made me remember a subject which consisted in synchronizing old clocks by 10ns, 10V pulses (10V out from the chip but 5V into 5 Ohm load ) with short 1ns rise time (fall time was less important).
Pulses are generated by a FPGA or a microcontroller and it should also be the shortest possible propagation delay.

Except with this kind of AOP, with which type of schematic can we realize this kind of pulse amplifier ?

I would have thought of using a fast comparator but I can't find any reference able to be powered in 10V and able to output a current >= 100mA
And it is almost the same story with logic gate, I can't find any references with both "high voltage" and fast enough rise time.

Do you have any other solution to propose or to assemble like logic gate or comparator + transistor ?
If you could put me on the track it would be great :)
Needless to say, I'm not very comfortable with electronics yet so please bear with me :)

Thanks in advance for your help :)
 

Online Benta

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Re: 10V 100mA fast edge pulse amplifier...what are the options ?
« Reply #1 on: March 04, 2023, 09:28:23 pm »
It made me remember a subject which consisted in synchronizing old clocks by 10ns, 10V pulses (10V out from the chip but 5V into 5 Ohm load ).


Could you elaborate here, please? It's not really understandable.
 

Offline jonpaul

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Re: 10V 100mA fast edge pulse amplifier...what are the options ?
« Reply #2 on: March 04, 2023, 09:31:58 pm »
who or what is AOP?

Read the excellent Tektronix Circuits Concept book Oscilloscope Vertical amplifiers
https://www.w140.com/tekwiki/index.php/Concepts_Series

Jon
Jean-Paul  the Internet Dinosaur
 

Offline TimFox

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Re: 10V 100mA fast edge pulse amplifier...what are the options ?
« Reply #3 on: March 04, 2023, 09:41:03 pm »
Just a note about technical word choice:
Ordinarily, an "amplifier" is a linear (or quasi-linear) device where the output magnitude depends on the input in some way.
You want a "buffer" or "driver", which is probably non-linear, where the input and output are binary levels.
 

Online Benta

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Re: 10V 100mA fast edge pulse amplifier...what are the options ?
« Reply #4 on: March 04, 2023, 09:45:55 pm »
who or what is AOP?
Prolly "Amplificateur OPerationelle" or something like that. In French, it's necessary to reverse things, eg, NATO/OTAN.
 

Offline SiliconWizard

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Re: 10V 100mA fast edge pulse amplifier...what are the options ?
« Reply #5 on: March 04, 2023, 10:13:37 pm »
This kind of opamps would really be your best bet if your goal is to design something practical in a reasonable amount of time, it's not even that expensive.

But if you want to design something more discrete just for kicks, you have a number of options.
One relatively "common" approach is to use transistors in their avalanche region.

Some notes:
https://arxiv.org/pdf/1712.04819
https://www.analog.com/media/en/technical-documentation/application-notes/an94f.pdf
 

Offline MathWizard

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Re: 10V 100mA fast edge pulse amplifier...what are the options ?
« Reply #6 on: March 06, 2023, 07:49:14 am »
So if Intel's latest CPU's are doing around 5.6GHz without too much trouble, that's ~180ps. So what can that be used for, by the time it would get to the outside world ?

Or if you work at Intel, what would be the best pulse or clock signal they could get to the outside world ?
 

Offline jbb

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Re: 10V 100mA fast edge pulse amplifier...what are the options ?
« Reply #7 on: March 06, 2023, 09:40:26 pm »
I think they’re going towards something like 12.5 GHz with PAM4 (Pulse Amplitude Modulation, 4 level). So that’s like 100 Gbits/sec over a single differential pair. (Less some overhead for encoding; I think encoding 64 real bits into 66 bits on the line is in the works)
 


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