I use the LTC6268-10 as Photomultiplier Tube Post-Amplifier.The scheme as follows.
Example waveform from LTC6268-10 datasheet.
What is the delay between input and output?I test it about 10ns,is it right?Is there a nominal value?Thank you!
Additional the LTC6268-10's bandwidth is't enough for my apply.This is my PMT datasheet.
My laser drive are :the rise time is 5ns,the pulse width is 10ns.I want to use 20k transimpedance or larger,can you give me some advice about what amplifiers I can select?Thank you very much.
Hi: Actually, the H10720 was the PMT featured in my article on the LTC6268... which you can find here:
LT Journal V25N2 LTC6268 Brisebois
I did not measure the delay, as this is usually dominated by the total of the distance of the laser, the PMT, and the cabling. Output pulse half-width was about 2.2ns. So I think the LTC6268-10 should be fast enough for your 10ns pulse. With a PMT, you should not need 20k Ohms of gain.
I still have some boards left over from that project, if you want one.
Thank you Badges:
I think the ac coupled capacitance increased the delay ,later I will test it.Then I also want to 20k Ohms of gain or larger ,maybe 100k is good.What amplifier I can select?Thank you very much.The pulse width is 10ns.
Can you give me the scheme and PCB layout for the H10720 PMT design?Thank you very much.