Module 1 of Schwartz's notes

Module 1 of Schwartz's notes - Department of Electrical and...

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Department of Electrical and Computer Engineering ECSE-330 Introduction to Electronics MODULE 1 Amplifiers & Diodes Amplifiers & Diodes 1.1 J. Schwartz, 2009 Department of Electrical and Computer Engineering ECSE-330 Introduction to Electronics Section 1 Amplifiers and Digital Logic Inverters Sedra/Smith, Sections 1.4-1.7 Amplifiers & Diodes 1.2 J. Schwartz, 2009 Department of Electrical and Computer Engineering ECSE-330 Introduction to Electronics tline of Section 1 Outline of Section 1 Analog Amplifiers – Linear amplifiers and transfer characteristics – Operating point – Classification of ideal amplifier topologies – Input/Output resistance – Frequency Response Digital Logic Inverters Amplifiers & Diodes 1.3 J. Schwartz, 2009 Department of Electrical and Computer Engineering ECSE-330 Introduction to Electronics ignal Con ention for Co rse Signal Convention for Course DC magnitudes in uppercase In general: symbol and subscript – Example: I D ,V D () () t v V t v t i I t i d D D d D D + = + = • Incremental signal quantities in lowercase symbol & subscript Example: otal C + signal antities in – Example: i d (t), v d (t) Total DC + signal quantities in lowercase symbol, uppercase subscript () ( ) () t v V t t v d D D + = + = ω sin 25 . 0 0 . 1 Amplifiers & Diodes 1.4 J. Schwartz, 2009 – Example: i D (t), v D (t)
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Department of Electrical and Computer Engineering ECSE-330 Introduction to Electronics inear Amplifiers Linear Amplifiers Multiply amplitude of a signal by a constant scalar quantity t t( ) () () t x A t x in out = Output (green): x out (t) Volts Output (blue): t ) (V) Input: x in (t) x out (t) Amplifiers & Diodes 1.5 J. Schwartz, 2009 Time (msec) Department of Electrical and Computer Engineering ECSE-330 Introduction to Electronics bser ations Observations • Multiply amplitude of a signal by a constant scalar quantity: linear amplification • Non-scalar/non-uniform amplification called distortion ( ) ( ) t x A t x i o = • Only signal portion of input is amplified here… but the DC component may be shifted too (offset) Undistorted Output (green) put Distorted Output (blue) Amplifiers & Diodes 1.6 J. Schwartz, 2009 Input Department of Electrical and Computer Engineering ECSE-330 Introduction to Electronics inear Amplifiers Linear Amplifiers •S ymbol for a single-ended input linear voltage amplifier v in v out A Ideally provides linear voltage ain regardless of the gain regardless of the amplitude of the input signal VDD eal amplifiers have power v in v out A Real amplifiers have power supplies that limit the amplitude of the output signal VSS If input is too large, output ( ) VSS VDD t v MAX out i.e. Amplifiers & Diodes 1.7 J. Schwartz, 2009 “clamps” Ö gain saturation Department of Electrical and Computer Engineering ECSE-330 Introduction to Electronics oltage Transfer Characteristic (VTC) Voltage Transfer Characteristic (VTC) Slope = Gain Amplifiers & Diodes 1.8 J. Schwartz, 2009 Ideal amplifier has linear input-output relationship
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Department of Electrical and Computer Engineering ECSE-330 Introduction to Electronics inim m/Ma im m Inp ts & O tp ts Minimum/Maximum Inputs & Outputs V out V
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Module 1 of Schwartz's notes - Department of Electrical and...

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