help on high speed op/comparator design

[cloudius]

op comparator wiki

input signal:20mv@160MHz sine wave
output:digital signal (pulse wave)
which circuit should I use?

 

[castrader]

pre-amp + track-latch comparator

 

[cloudius]

pre-amp + track-latch comparator

do i need a 160MHz clock to control track-latch??

 

[caosl]

yeah, you can seperate the pre-amp cycle and latch cycle using 160M clock!

 

[Alan_Nesta]

I think maybe 160MHz clock is not enough for 160MHz signal, maybe you should use multiphase sampling

 

[bobchentan]

you can use basic comparator or limiter design, of course the track-latch is one kind which need clock

 

[avt]

I think you don't have to clock the comparator - you can just use a reg latch without clock ...

 

[mince]

Just use an open loop high gain OTA with a couple of inverters as the load.

 

[alasliu]

low offset pre amp + inverter
maybe