1 / 12

Chapter 10 Analog Systems

Chapter 10 Analog Systems. Microelectronic Circuit Design Richard C. Jaeger Travis N. Blalock. Example of Analog Electronic System: FM Stereo Receiver.

williesanders
Télécharger la présentation

Chapter 10 Analog Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 10Analog Systems Microelectronic Circuit Design Richard C. Jaeger Travis N. Blalock Microelectronic Circuit Design, 3E McGraw-Hill

  2. Example of Analog Electronic System: FM Stereo Receiver • Linear functions: Radio and audio frequency amplification, frequency selection (tuning), impedance matching (75- input, tailoring audio frequency response, local oscillator • Nonlinear functions: DC power supply(rectification), frequency conversion (mixing), detection/demodulation Microelectronic Circuit Design, 3E McGraw-Hill

  3. Amplification: Introduction A complex periodic signal can be represented as the sum of many individual sine waves. We consider only one component with amplitude Vs = 1 mV and frequency ws with 0 phase (signal is used as reference): Amplifier output is sinusoidal with same frequency but different amplitude VO and phase : Microelectronic Circuit Design, 3E McGraw-Hill

  4. Amplification: Introduction (cont.) Amplifier output power is: Here, PO = 100 W and RL = 8 W Output power also requires output current which is: Input current is given by phase is zero because circuit is purely resistive. Microelectronic Circuit Design, 3E McGraw-Hill

  5. Amplification: Gain • Voltage Gain: Magnitude and phase of voltage gain are given by and For our example, • Current Gain: Magnitude of current gain is given by Microelectronic Circuit Design, 3E McGraw-Hill

  6. Amplification: Gain (cont.) • Power Gain: For our example, On decibel scale, i.e. in dB Microelectronic Circuit Design, 3E McGraw-Hill

  7. Two-port Models for Amplifiers • Simplifies amplifier-behavior modeling in complex systems. • Two-port models are linear network models, valid only under small-signal conditions. • Represented by g-, h-, y- and z-parameters. • (v1, i1) and (v2, i2) represent signal components of voltages and currents at the network ports. Microelectronic Circuit Design, 3E McGraw-Hill

  8. Microelectronic Circuit Design, 3E McGraw-Hill

  9. Microelectronic Circuit Design, 3E McGraw-Hill

  10. Example: BJT Microelectronic Circuit Design, 3E McGraw-Hill

  11. g-parameters Using open-circuit (i = 0) and short-circuit (v = 0) termination conditions Open-circuit input conductance Reverse short-circuit current gain Forward open-circuit voltage gain Short-circuit output resistance Microelectronic Circuit Design, 3E McGraw-Hill

  12. g-parameters:Example Problem: Find g-parameters. Approach: Apply specified boundary conditions for each g-parameter, use circuit analysis. For g11 and g21: apply voltage v1 to input port and open circuit output port. For g12 and g22: apply current i2 to output port and short circuit input port. Microelectronic Circuit Design, 3E McGraw-Hill

More Related