【摘要】：隨著信息技術(shù)的發(fā)展,傳感器技術(shù)得到了廣泛應(yīng)用,具有體積小、成本低、結(jié)構(gòu)簡單的霍爾傳感器備受青睞。本文在現(xiàn)有霍爾電路基礎(chǔ)上研究了一款開關(guān)型霍爾電路芯片,它能夠?qū)⒆饔迷诨魻栐系拇判盘?hào)轉(zhuǎn)換為電信號(hào),并通過對霍爾電勢的分析檢測磁場的存在,體積小、抗干擾能力強(qiáng)。通過對霍爾效應(yīng)以及霍爾電路工作原理的深入分析并結(jié)合國內(nèi)現(xiàn)有的工藝條件,設(shè)計(jì)了一款開關(guān)型霍爾電路芯片。芯片主要包括:穩(wěn)壓電路、霍爾元件、差分放大電路、施密特觸發(fā)器電路、集電極開路輸出電路。分析、比較了幾種消除霍爾元件失調(diào)電壓的方法,最終采用旋轉(zhuǎn)電流法,并將霍爾元件置于整個(gè)芯片的中間位置以減小壓阻效應(yīng)的影響。為了便于對霍爾電路進(jìn)行仿真,提高仿真精度,對霍爾元件進(jìn)行了深入分析并采用Verilog-A語言建立了霍爾元件模型。采用施密特觸發(fā)器實(shí)現(xiàn)開關(guān)型霍爾電路芯片的遲滯特性,并對其兩個(gè)翻轉(zhuǎn)點(diǎn)進(jìn)行了定性分析與定量計(jì)算。當(dāng)外界磁場增加到開啟點(diǎn)時(shí),輸出變?yōu)榈碗娖?繼續(xù)增大磁場,輸出狀態(tài)不變。如果磁場開始變小,只有當(dāng)磁場減小到釋放點(diǎn)時(shí),輸出電壓才會(huì)由低電平變?yōu)楦唠娖健．?dāng)磁場大小處于遲滯區(qū)間時(shí),輸出狀態(tài)保持不變,從而確保電路可靠、穩(wěn)定地工作。在對各模塊電路的組成及工作原理進(jìn)行分析的基礎(chǔ)上,設(shè)計(jì)了霍爾電路芯片整體電路,并通過仿真分析驗(yàn)證了所設(shè)計(jì)電路的可行性。最后,采用2μm 36V Bipolar工藝設(shè)計(jì)了芯片版圖,并通過DRC檢查和LVS驗(yàn)證。同時(shí),對所設(shè)計(jì)版圖進(jìn)行流片驗(yàn)證,對流片的芯片進(jìn)行測試,結(jié)果表明其各項(xiàng)性能指標(biāo)達(dá)到了設(shè)計(jì)要求。
[Abstract]:With the development of information technology, sensor technology has been widely used, with small size, low cost, simple structure Hall sensor is favored. In this paper, a switch Hall circuit chip is studied on the basis of the existing Hall circuit. It can convert the magnetic signal acting on Hall element into electric signal, and detect the presence of magnetic field through the analysis of Hall potential. Strong anti-interference ability. Based on the analysis of Hall effect and the working principle of Hall circuit, a switch Hall circuit chip is designed. The chip mainly includes: voltage stabilizing circuit, Hall element, differential amplifier circuit, Schmitt trigger circuit, collector open circuit output circuit. Several methods to eliminate the offset voltage of Hall element are analyzed and compared. Finally the rotating current method is adopted and the Hall element is placed in the middle position of the whole chip to reduce the effect of piezoresistive effect. In order to facilitate the simulation of Hall circuit and improve the accuracy of simulation, the Hall element model is established by Verilog-A language. Schmitt flip-flop is used to realize the hysteresis characteristics of the switch Hall circuit chip and its two flip points are qualitatively analyzed and quantitatively calculated. When the external magnetic field is increased to the opening point, the output becomes low level and continues to increase the magnetic field, the output state remains unchanged. If the magnetic field begins to shrink, the output voltage will change from low to high only when the magnetic field decreases to the release point. When the magnetic field is in the hysteresis range, the output state remains constant, which ensures the circuit to work reliably and stably. On the basis of analyzing the composition and working principle of each module circuit, the whole circuit of Hall circuit chip is designed, and the feasibility of the designed circuit is verified by simulation analysis. Finally, the chip layout is designed by using 2 渭 m 36V Bipolar process, and verified by DRC and LVS. At the same time, the chip of the convection chip is tested and the results show that the performance of the chip meets the design requirements.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN402;TP212

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳道煉;鎖相技術(shù)在開關(guān)型DC/DC變換器中的應(yīng)用[J];電工技術(shù)雜志;1994年04期

2 劉軍政;;模擬開關(guān)型脈沖分解器[J];電子元器件應(yīng)用;2003年06期

3 王東平，，戎煒;5V／3．3V／可調(diào)輸出低漂移DC－DC變換器[J];電子技術(shù);1995年09期

4 宋曉e

本文編號(hào)：2287122