求助贴，关于运放结构实现的比较器功能

tideblue · 发表于 2013-4-8 20:06:07

感觉和有可能是你的M5/M6的输入电容太大
然后第一级的bias current太小导致的slew问题

feynmancgz · 发表于 2013-4-8 22:39:06

本帖最后由 feynmancgz 于 2013-4-9 02:35 编辑

回复 4# 腐朽的青春99

You just tell me the working principle of a comparator, not application.
Application means where you will use your comparator. Maybe it's not convenient to tell me.
So what's your application's requirement ?
high speed ? high resolution ? or both ? .......
The speed of a static comparator normally limited by linear response and slew-rate.
Your ciruit maybe limited by slew-rate.
But don't forget that the speed of linear response of a comparator is limited by -3dB freq, not GBW.
GBW just shows the tradeoff.
If you have specific speed requirement, you have a specific -3dB freq requirement.

腐朽的青春99 · 发表于 2013-4-9 08:59:13

回复 12# feynmancgz

Thank you for your patient guidance。

semico_ljj · 发表于 2013-4-23 15:45:26

Mark。

tangyaoyun · 发表于 2013-4-23 15:45:55

回复 1# 腐朽的青春99

感觉这种结构的延迟就是纳秒级的吧，除非电流取到很大

腐朽的青春99 · 发表于 2013-4-24 10:39:56

回复 15# tangyaoyun

现在我得出的也就是几个ns，看MIT的论文，他们做出的结果和普通的锁存比较器结果差不多，能达到200个ps。

tangyaoyun · 发表于 2013-4-24 11:28:04

本帖最后由 tangyaoyun 于 2013-4-24 11:29 编辑

回复 16# 腐朽的青春99

把电流加大呗，想要多快都可以，要不就用小尺寸器件，或者用低阈值滴管子

腐朽的青春99 · 发表于 2013-4-24 12:14:48

回复 17# tangyaoyun

多谢

hew · 发表于 2014-8-29 08:38:24

多谢楼主分享

shen0119 · 发表于 2024-5-16 12:27:08

能把论文贴出来看看吗？谢谢

[求助] 求助贴，关于运放结构实现的比较器功能

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