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Introduction to SPICE Microelectronics (I). What is SPICE? Simulation Program with Integrated Circuit Emphasis SPICE was developed by U.C. Berkeley in.

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Presentation on theme: "Introduction to SPICE Microelectronics (I). What is SPICE? Simulation Program with Integrated Circuit Emphasis SPICE was developed by U.C. Berkeley in."— Presentation transcript:

1 Introduction to SPICE Microelectronics (I)

2 What is SPICE? Simulation Program with Integrated Circuit Emphasis SPICE was developed by U.C. Berkeley in 1970. There are many commercial SPICE programs, such as PSPICE, HSPICE, IS-SPICE, IG-SPICE,.etc.

3 PSPICE Data Flow Schematics.sch PSPICE (simulation) Graph Tools Create netlist.cir.net.als Graph Data output.dat circuits editor

4 檔案說明 檔案 代表內容.sch 儲存利用電路圖形編輯器產生的電路圖。.als 儲存電路節點名稱、模型的特性及元件別名。.net 儲存所有元件和元件之間連接的情形。.cir 儲存參考到 netlist 、 alias 和 model 資料的檔案,可以直 接送入 PSPICE 分析結果,這是 PSPICE 軟體中最重要 的檔案 。.dat 儲存圖形資料結果,可以送入 Graph Tool 中,分析圖 形 。.out 儲存文字輸出結果 。

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6 You can use hot-key : Ctrl+G used part description

7 元件庫說明 Symbol Lib.Resource Description abm.slb Pspice A/D 模擬時可用到的函數 analog.slb 電阻、電容、電感、傳輸線、變壓器、控制電 源。 breakout.slb 半導體元件 (diode, MOS, BJT…) 、開關、 ADC 、 DAC 、 RAM 、 ROM 等。 connect.slb 各種接腳 eval.slb 各種已存在元件 ( 如 74 系列 IC) port.slb 各種接腳 ( 含接地等 …) source.slb 各種電源 sourcstm.slb 電源 special.slb Pspice command 與特殊符號

8 You can modify the component attribute by double click the part. Only parameter without ’ * ‘ can be modified. You can change the component placement direction by hot-key Ctrl+R, or using the dialog “Change Display”.

9 You can use “Ctrl+W” to draw wires. Add label for wire -> select the wire then double click. Select and delete.

10 Basic Analysis DC Analysis: 1. Bias point detail 2. DC sweep Transient Analysis : transient AC Analysis: AC sweep

11 Bias point detail Choose Analysis / setup Choose Analysis / Simulate

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13 DC sweep 與更改變數的元件名稱相同。

14 Marker ※測量電流的 marker 必須在元件端點。

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16 Transient Analysis Initial condition 要記得設定。 ( 參數 IC = ** V)

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18 AC sweep 電壓源必須要選擇 VAC

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20 The Diode Model PSPICE9.1 版元件庫中, 有四種二極體模型 D1N4004 、 D1N4148 、 D1N750 、 D1N914 。 其中 D1N4148 為 Si 質二極體。 D1N750 為 Zener Diode 。

21 Diode 近似模型 平常我們在紙上分析電路時,不可能實際地考量 diode 的物理特 性,所以介紹幾個常用的近似模型。 (1) (2) (3) 理想二極體模型 (Ideal Diode Model ) 定壓降模型 ( Constant Voltage Drop Model ) 電池加電阻模型 ( Battery Plus Resistance Model )

22 Exercise 利用 PSPICE 畫出 D1N4148 二極體的 I-V curve 。

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24 箝位電路( Clamping circuit )

25 Vsin Parameter DC DC voltage magnitude(used for bias point) ACAC magnitude(used in AC sweep) Voffoffset voltage VamplVoltage amplitude of sinusoid (transient analysis only) Freqfreqency of sinusoid (transient analysis only) TDDelay DFDamping factor PhaseDifferential phase of sinusoid Simulationlyx

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27 the voltage doubler Clamping circuit The Peak Rectifier ( 峰值整流器 )

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