發(fā)布時間：2018-12-13 02:58

【摘要】：隨著國家航天事業(yè)的飛速發(fā)展,宇航應用也不斷對集成電路設計提出新的挑戰(zhàn),RS-422協(xié)議接口電路以其工作穩(wěn)定、可靠性高等特點,在國防及航天領域中同樣應用廣泛。低頻長線傳輸中廣泛應用的接口電路采用RS-422協(xié)議規(guī)范,該類接口電路一般由發(fā)送器和接收器兩部分組成,發(fā)送器是由簡單的數(shù)字邏輯和較大的輸出驅(qū)動管組成,傳輸末端的接收器是由差分放大器完成對長線上衰減后信號的識別。傳統(tǒng)的接收器往往采用簡單的二級放大器來實現(xiàn),這種結構電路增益小、反映速度慢,且伴隨著較大的功耗。近些年,高速低功耗設計已經(jīng)變成集成電路設計領域關注的焦點,整機系統(tǒng)市場也紛紛提出了對高速度和低功耗的要求,這使得傳統(tǒng)的接收器迫切需要改進優(yōu)化、重新考慮提高響應速度和降低功耗的設計�？鐚н\算放大器(OTA)以電流驅(qū)動、增益可調(diào)等優(yōu)勢,一直被人們所廣泛使用。本文利用OTA(Operational Transconductance Amplifier)替代傳統(tǒng)接收器中放大器,通過對傳統(tǒng)OTA電路的分析,不斷優(yōu)化設計,最終實現(xiàn)接收器電路的高速低功耗。本文所設計的OTA,電路增益達到60dB,單位增益帶寬(GBW) 2.213MHz,相位裕度60.11°,靜態(tài)電流30gA,正向壓擺率44V/μs,負向壓擺率74.9V/μs。最后設計出的RS-422協(xié)議接口模塊電路的靜態(tài)電流只有3.4mA,傳輸延遲Tplh為20.02ns、Tphl為18.5ns。為了滿足更多的應用需求,本文對所設計的接口模塊電路進行了ESD(Electro Static Discharge)可靠性設計和抗輻射加固設計,并對ESD結構進行了流片測試,全芯片抗ESD能力達到HBM-4000V以上。
[Abstract]:With the rapid development of national aerospace industry, aerospace applications have also put forward new challenges to the design of integrated circuits. RS-422 protocol interface circuits are also widely used in the field of national defense and aerospace because of their stable work and high reliability. The interface circuit widely used in low frequency long line transmission adopts RS-422 protocol specification. This kind of interface circuit is generally composed of transmitter and receiver. The transmitter is composed of simple digital logic and large output drive tube. The receiver at the transmission end is a differential amplifier to identify the attenuation signal on the long line. The traditional receiver is usually implemented by a simple secondary amplifier, which has the advantages of low gain, low speed and high power consumption. In recent years, high speed and low power design have become the focus of attention in the field of integrated circuit design. The whole machine system market has put forward the requirements of high speed and low power consumption, which makes the traditional receiver urgently need to improve and optimize. Reconsider the design to increase response speed and reduce power consumption. Transconductance operational amplifier (OTA) has been widely used because of its current drive and adjustable gain. In this paper, OTA (Operational Transconductance Amplifier) is used to replace the amplifier in the traditional receiver. Through the analysis of the traditional OTA circuit, the design of the receiver circuit is optimized continuously, and the receiver circuit with high speed and low power consumption is finally realized. The designed OTA, circuit has a gain of 60dB, a unit gain bandwidth of (GBW) 2.213MHz, a phase margin of 60.11 擄, a static current of 30gA, a forward voltage pendulum ratio of 44V/ 渭 s and a negative voltage pendulum ratio of 74.9V/ 渭 s. At last, the static current of the RS-422 protocol interface module is only 3.4 Ma, and the transmission delay Tplh is 20.02 nsTphl is 18.5ns. In order to meet the needs of more applications, the ESD (Electro Static Discharge) reliability design and radiation hardening design of the designed interface circuit are carried out in this paper, and the ESD structure is tested by flow sheet. The whole chip anti-ESD capability is over HBM-4000V.
【學位授予單位】：東南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN402

【相似文獻】

相關期刊論文 前10條

1 曾屹;瞬態(tài)波形存貯器的微機接口電路設計[J];電測與儀表;1988年04期

2 王建生;80960與82380的接口電路設計[J];航空計算技術;1996年01期

3 黃永康,華鋒;非標準接口電路設計[J];微計算機信息;1997年05期

4 高玉文;非標準并行接口電路設計[J];山西電子技術;1998年Z1期

5 儀維憲;郝燕玲;董浩;;微機多總線從模板接口電路設計[J];黑龍江自動化技術與應用;1988年03期

6 魏紅珍;抗惡劣環(huán)境下的異步串行接口電路設計[J];單片機與嵌入式系統(tǒng)應用;2002年05期

7 王亞;硬件實現(xiàn)斜坡信號的接口電路設計[J];基礎自動化;1998年04期

8 黃智偉,朱衛(wèi)華,陳和;無線串行接口電路設計[J];電測與儀表;2001年07期

9 熊川,朱成;全自動生化檢測儀微機接口電路設計[J];桂林電子工業(yè)學院學報;2002年05期

10 丁緒星;用光纖傳輸?shù)腞S-232接口電路設計[J];電子產(chǎn)品世界;2002年Z2期

相關會議論文 前2條

1 楊一帆;江曉山;代洪亮;趙京偉;;基于VME主設備的接口電路設計[A];第十三屆全國核電子學與核探測技術學術年會論文集（上冊）[C];2006年

2 李慶;周麗南;孫敏;閆士職;;基于P87C591單片機的CF卡接口電路設計[A];2008中國電工技術學會電力電子學會第十一屆學術年會論文摘要集[C];2008年

相關碩士學位論文 前5條

1 李博;基于低功耗高速瞬態(tài)響應OTA的高可靠抗輻射接口電路設計[D];東南大學;2015年

2 張海良;DDR SDRAM物理層的SSTL接口電路設計[D];哈爾濱工業(yè)大學;2010年

3 陳永耀;非接觸式IC卡接口電路設計[D];西安電子科技大學;2010年

4 張銀秀;基于PC機總線的接口電路設計與應用[D];哈爾濱理工大學;2003年

5 劉蓓;基于FPGA/HDL的隨機讀寫I~2C串行總線接口電路設計[D];蘇州大學;2008年

，

本文編號：2375751