OpAmp vs OTA

hyg991503

OpAmpMicroE.CN::微电中国网2 }- S3 K! c4 A
• "General Purpose"MicroE.CN::微电中国网5 }8 X* ~* i  [6 w
• Ideally a voltage controlled voltage source半导体,微电子,集成电路,IC,工艺,设计,器件,封装,测试,MEMS8 g; h- C3 ]7 [! V
• Low output impedance半导体,微电子,集成电路,IC,工艺,设计,器件,封装,测试,MEMS2 c, b  c2 A0 [4 j. x3 m
• Can drive resistive and capacitive loads=>半导体,微电子,集成电路,IC,工艺,设计,器件,封装,测试,MEMS7 [: F( h6 f# ~" c5 ?: e+ A
• Essentially OTA + bufferMicroE.CN::微电中国网# M: {3 Z4 Q' |1 V7 O' d6 i$ g
• Buffer increases complexity and power dissipationwww.microe.cn, C# _( D/ e- D- f7 J
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OTA半导体,微电子,集成电路,IC,工艺,设计,器件,封装,测试,MEMS! b, o* ^: Q3 [5 y, U, d0 N1 R$ ^
• Most on-chip amplifiers are OTAs
8 }+ `8 o- B4 B; [# J; ]! M( iwww.microe.cn• Ideally a voltage controlled current source=>半导体,微电子,集成电路,IC,工艺,设计,器件,封装,测试,MEMS8 e0 V# D5 x. z+ V" j8 t
• High output impedanceMicroE.CN::微电中国网' Y) x, C  V0 x& f; z1 |; }
• Cannot drive resistive loads半导体,微电子,集成电路,IC,工艺,设计,器件,封装,测试,MEMS  w2 W+ \0 o2 e% ~7 |
• Use capacitive (switched capacitor) feedback

icb

不错了 不过感觉比较简单啊

limpidyou

原来是这样子啊!~
一直弄不大清楚的~
谢谢啦!~

leizhitong

怎么看不到连接？？？

brokencup

写得太简单啦。

eyetolisten

I went to an interview and I mentioned I did this opamp blah blah, the guy who interviews me told me that's a OTA, not opamp...

rainheart

• High output impedanceMicroE.CN::微电中国网' Y) x, C  V0 x& f; z1 |; }
• Cannot drive resistive loads半导体,微电子,集成电路,IC,工艺,设计,器件,封装,测试,MEMS  w2 W+ \0 o2 e% ~7 |
• Use capacitive (switched capacitor) feedback


bu cuo

vdslafe

just a naming perference, why do you care as a designer?

比如，一个switched-cap 电路的amp, 用了2级运放，是ota 还是opamp?

大大山

OPA and OTA 的英文全称是什么？？

kyoabc

It's so simply, but it is useful to me!!