By D. Wouter, J. Groeneveld, Douwe T. de Jong (auth.), Willy Sansen, Johan H. Huijsing, Rudy J. Van de Plassche (eds.)
This quantity concentrates on 3 issues: combined analog--digital circuit layout, sensor interface circuits and conversation circuits. The ebook contains six papers on every one subject of an instructional nature aimed toward bettering the layout of analog circuits. The e-book is split into 3 components.
Part I: combined Analog--Digital Circuit Design considers the biggest progress region in microelectronics. either regular designs and ASICs have began integrating analog cells and electronic sections at the related chip. The papers hide issues akin to groundbounce and supply-line spikes, layout methodologies for high-level layout and real combined analog--digital designs.
Part II: Sensor Interface Circuits describes a number of sorts of sign conditioning circuits and interfaces for sensors. those comprise interface suggestions for capacitive sensors, sigma--delta modulation used to mix a microprocessor suitable interface with on chip CMOS sensors, injectable sensors and responders, sign conditioning circuits and sensors mixed with oblique converters.
Part III: conversation Circuits concentrates on platforms and applied circuits to be used in own conversation platforms. those have functions in cordless phones and cellular cellphone platforms to be used in mobile networks. an enormous requirement for those structures is low energy intake, specially while working in standby mode, in order to maximise the time among battery recharges.
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Extra info for Analog Circuit Design: Mixed A/D Circuit Design, Sensor Interface Circuits and Communication Circuits
1- -1 1- z· ~ t; Fa +- ------ ..... ------ ........................... -............... ---------- .. fs= ~ - _,\_ 8)--t + I Vos I I I ' I I I : -" Quantizer - '-- ' z-l(A- ..! + T/t; 1- z-1 t; Yn 1 M,' 1- z-1 l - M2' f- Fig. 5: Coder Mode/for Simulation It is a cascade of a time continuous input part followed by a time discrete loop. The transfer functions of the nonlinear quantizer and feedback DAC are described as subcircuits by look-up tables. The data for these look-up tables has to be extracted from circuit simulations or from measurement.
As modeling is such an important aspect of top-down design, this paper will primarily describe modeling in a mixed technology application. This paper focuses on an electro-mechanical system to demonstrate the applicability of the Saber™ simulator to top-down design, mixed analogdigital design, and mixed technology design. While top-down techniques are not explicitly described within the scope of this paper, the ability to use Saber and MAST to effectively manage a top-down approach will be evident.
Many board-level mixed analog-digital systems have begun to migrate down towards single chip implementations containing many different parts both digital and analog. That means that today analog circuitry is required more in mixed analog-digital systems than in stand alone analog circuits. In the DSP-parts of these chips important parameters like noise are only a question of digital wordlength while the analog designers often deal with audio and video signals with near infinite levels of resolution.