Hello, I need to generate a 100nsec wide pulse with a 700mV positive pules and a -700mV negative pulse.



I had plans to use an LT1399 but the tON and tOff are too slow.

Can anyone suggest a solution please.

Thank you

 

The LT1399 is an op amp.

How are you generating the pulse?

 

Sounds like a Classroom assignment to me.
No details, no specifications, no purpose or objective.
.
.
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Sounds like a Classroom assignment to me.
No details, no specifications, no purpose or objective.

But he has a "need".

 

74LS123 can generate 60ns pulses. The challenge is creating the bipolar pulse.

 

I need to generate a 100nsec wide pulse with a 700mV positive pules and a -700mV negative pulse.

Why?

 

You can try generating a 100ns pulse.
Generate a second 100ns pulse on the trailing edge of the first.
Combine the two in a difference amp or fast comparator circuit.

 

The LT1399 is an op amp.

How are you generating the pulse?

Here is my simulation attached.

 

74LS123 can generate 60ns pulses. The challenge is creating the bipolar pulse.

Thank you very much. I will look into this device.

Why?

This signal will provide the Gen Locking to the SDI Camera.

Sounds like a Classroom assignment to me.
No details, no specifications, no purpose or objective.
.
.
.

Hello, haven't done analog design in a long time. I have been working with FPGA's for the last twenty years, so yes this a "classroom" assignment.

 

What is the rep rate of the signal and what generates that?

 

Why?

Tri level sync, used in pro video HD systems of old, before SDI
https://en.wikipedia.org/wiki/Tri-level_sync

Ive only done it at the DAC output, in digits,
analog is more fun

It does come up on the forum every few years,
so I'm guessing its homework and should be in the homework forum

https://forum.allaboutcircuits.com/threads/how-to-generate-a-tri-level-signal.163522/

 

Tri level sync,

My question was for the TS.

What are you trying to do?

What is the system you are creating or working with?

What are the inputs and power sources?

What circuits does the output drive?

ak