1 / 11

Introduction

Introduction. ECE 418 Algorithms of Circuit Design (Fall 2005). Algorithms of circuit design. What is the purpose of a circuit ?. How many classes of circuits exist ? ( Digital, Analog, Mixed-signal). Algorithms of Digital Circuit Design ? ( ECE 230, 331, 302, 410, 411)

landaverde
Download Presentation

Introduction

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. Introduction ECE 418 Algorithms of Circuit Design (Fall 2005)

  2. Algorithms of circuit design • What is the purpose of a circuit ? • How many classes of circuits exist ? ( Digital, Analog, Mixed-signal) • Algorithms of Digital Circuit Design ? ( ECE 230, 331, 302, 410, 411) • Algorithms of Analog Circuit Design ?

  3. Why Analog ? • Our environment is predominantly analog. Image/Acoustics/sensory signal • Biomedical applications, audio applications etc.

  4. Communication and storage systems • Our environment is predominantly analog. Digital communication systems High density storage systems • Whenever a signal interacts with noise and physical environment analog processing play an important role.

  5. Ubiquitous Electronics Nanotechnology Fingerprint sensors Implantable Devices DNA sensors and Gene Chips

  6. Why not focus on just A/D ? • Take a look at this picture taken using a traditional digital camera. • Can you locate a person in the picture ? • Once the picture is quantized with an A/D information can not be retrieved. • Analog signal processing could dynamically adjust the pixel resolution and dynamic range.

  7. Masterpieces of Nature • Information processing in nature is analog. • Till date no man-made sonar can match the performance of a bat. • Parasitoid fly (O.Ochracea) can localize sound of crickets with an accuracy less than 2 degrees. Nature, vol.429, 2004 Nature, vol.410, 2001

  8. Analog Circuit design and Industry • Amplifiers, A/D converters, Regulators, DC-DC converters, radio-frequency circuits. • Analog circuit design is 60% art and 40% science. Possibility of implementing a function in several different ways. • Several big players in the market: Intel, Analog Devices, Maxim, Texas Instruments,…..

  9. - Digital circuits deal primarily with speed power tradeoff. - Analog circuits deal with multi-dimensional tradeoff of speed, power, gain, precision, supply, … - Due to speed and precision requirements, analog circuits are much more sensitive to noise, crosstalk, and other interferers. Challenge of Analog Circuit Design Precision Speed Power

  10. - Analog circuits are much more sensitive to second-order device effects - High performance analog circuit design can rarely be automated - typically require hand-crafted design and layout - Modeling and simulation of analog circuits is still problematic, requiring experience and intution Challenge of Analog Circuit Design

  11. - Economic forces require the development of analog circuits in mainstream digital processes - Economic forces pushing the integration of analog and digital functions onto a single substrate - Many levels of abstraction are required Challenge of Analog Circuit Design

More Related