密勒補(bǔ)償運(yùn)算放大器的設(shè)計(jì)與優(yōu)化

1、蘇州科技學(xué)院天平學(xué)院本科生畢業(yè)設(shè)計(jì)（論文）I密勒補(bǔ)償運(yùn)算放大器的設(shè)計(jì)與優(yōu)化摘要電子工業(yè)在如今飛速的發(fā)展，集成電路在各行各業(yè)中起到了越來(lái)越重要的作用，從而促使需求量越來(lái)越高。高速、高精度、多功能、低功耗等等的指標(biāo)已經(jīng)逐漸走進(jìn)人們的視野。本次設(shè)計(jì)主要闡述了放大器的基本組成，簡(jiǎn)單電阻負(fù)載放大器和共源放大器以及二級(jí)密勒補(bǔ)償運(yùn)算放大器的設(shè)計(jì)。設(shè)計(jì)中我們采用Cadence軟件在虛擬機(jī)中運(yùn)行來(lái)實(shí)現(xiàn)電路的仿真。關(guān)注運(yùn)算放大器的各項(xiàng)指標(biāo)：開(kāi)環(huán)直流增益，單

2、位增益帶寬，相位裕度，轉(zhuǎn)換速率，負(fù)載電容，靜態(tài)功耗，共模抑制比等等。根據(jù)提供的指標(biāo)參數(shù)進(jìn)行設(shè)計(jì)，最終通過(guò)改變晶體管參數(shù)和元器件參數(shù)進(jìn)行分析，進(jìn)而可以達(dá)到優(yōu)化電路的目的。關(guān)鍵詞運(yùn)算放大器；電路設(shè)計(jì)；Cadence仿真；性能指標(biāo)蘇州科技學(xué)院天平學(xué)院本科生畢業(yè)設(shè)計(jì)（論文）III目錄第1章緒論緒論...........................................................................

3、.............................................11.1引言............................................................................................................................11.2設(shè)計(jì)思路、運(yùn)放介紹和軟件運(yùn)用...........................

4、..................................................11.2.1運(yùn)算放大器的基本設(shè)計(jì)思路..............................................................................11.2.2關(guān)于模擬集成運(yùn)算放大器.........................................................

5、.........................21.2.3仿真軟件的介紹..................................................................................................31.2.4運(yùn)算放大器的性能指標(biāo)....................................................................

6、..................31.3章節(jié)內(nèi)容概述.............................................................................................................4第2章簡(jiǎn)單的電阻負(fù)載共源放大器簡(jiǎn)單的電阻負(fù)載共源放大器.......................................................

7、.........................52.1電路原理分析.............................................................................................................52.2電路仿真過(guò)程與原理...............................................................

8、..................................62.3SMIC0.18UM3.3V厚氧化柵工藝PMOS管電阻負(fù)載共源放大器影響因素仿真與分析.................................................................................................................................132.3.1設(shè)定電

9、阻=165kΩ，L=10u不變，改變W.................................................13DR2.3.2設(shè)定Rds=165kΩ不變，W=5u不變，改變L..................................................132.3.3設(shè)定WL=40u10u=4不變，=165kΩ不變，改變Vgs.............................14D

10、R2.3.4設(shè)定WL=40u10u=4不變，改變的大小..................................................15DR2.3.5設(shè)定=165kΩ不變，WL=4不變，改變W，L的值.................................15DR第3章簡(jiǎn)單共源放大器的設(shè)計(jì)簡(jiǎn)單共源放大器的設(shè)計(jì).................................................

11、.....................................17173.1單級(jí)共源放大器的設(shè)計(jì)...........................................................................................173.1.1設(shè)計(jì)原理圖與指標(biāo)............................................................

12、................................173.1.2參數(shù)的估計(jì).......................................................................................................173.1.3仿真驗(yàn)證..............................................................

13、.............................................183.2共源共柵電路...........................................................................................................243.2.1設(shè)計(jì)原理圖與指標(biāo)..........................................

14、..................................................243.2.2參數(shù)估計(jì)...........................................................................................................253.3參數(shù)比對(duì)分析.........................................

15、..................................................................26第4章二級(jí)密勒補(bǔ)償運(yùn)算放大器的設(shè)計(jì)和分析二級(jí)密勒補(bǔ)償運(yùn)算放大器的設(shè)計(jì)和分析..........................................................26264.1電路原理和參數(shù)估計(jì).........................................

16、......................................................264.1.1電路原理分析....................................................................................................264.1.2設(shè)計(jì)指標(biāo)..........................................

17、.................................................................264.2電路設(shè)計(jì)與參數(shù)估算...............................................................................................264.2.1分配各級(jí)的增益................................

18、................................................................264.2.2確定密勒電容Cc的大小..................................................................................264.2.3確定各級(jí)工作電流.........................................

19、...................................................264.2.4確定第一級(jí)輸出擺幅和靜態(tài)工作點(diǎn)................................................................264.2.5估算第一級(jí)寬長(zhǎng)比....................................................................