Transistor sizing for timing optimization of combinational digital CMOS circuits
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Transistor sizing for timing optimization of combinational digital CMOS circuits by Lucas Sebastian Heusler

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Published by Hartung-Gorre Verlag in [Konstanz, Switzerland .
Written in English

Subjects:

  • Metal oxide semiconductors, Complimentary -- Design and construction.,
  • Transistor-transistor logic circuits -- Design and construction.

Book details:

Edition Notes

Statementpresented by Lucas Sebastian Heusler.
Classifications
LC ClassificationsTK7871.99.M44 H49 1990
The Physical Object
Paginationix, 102 p. :
Number of Pages102
ID Numbers
Open LibraryOL17531343M

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  Abstract. The performance of a CMOS circuit depends heavily on its transistor sizes. We have tested a standard optimizer, a Monte Carlo scheme and a method based on Genetic Algorithms combined with very accurate SPICE simulations to automatically optimize transistor sizes of three different digital CMOS by: developing an analog circuit, thereby significantly improving the time to market for an integrated circuit chip. Keyword-Optimization, Transistor sizing, Analog design, CMOS circuit, Genetic algorithm, Pspice I. INTRODUCTION Transistor size will influence the speed of circuit, energy consumption, total area of circuit, and the delay constraints. Abstract: This research paper analyzes optimization of different combinational logic circuits (AND gate, OR gate, multiplexer, de-multiplexer) using Pass Transistor Logic Configuration (PTL) and CMOS Logic Configuration. PTL design used in this paper is significant as gate terminal is only denoting input terminal rather than controlling terminal as in previously reported PTL designs. Abstract. Performance optimization, i.e. the problem of finding an optimal investment of transistor area which meets given delay constraints, is considered from an abstract, cell based point of view which allows only solutions within a discrete solution space of coarse : Uwe Hinsberger, Reiner Kolla.

CMOS Gate Structure The general form used to construct any inverting logic gate, such as: NOT, NAND, or NOR. The networks may consist of transistors in series or in parallel. When transistors are in parallel, the network is ON if either transistor is ON. When transistors are in series, the network is ON only if all transistors are ON. pMOSFile Size: 2MB. Transistor/Gate Sizing Optimization • Given: Logic network with or without cell library Find: Optimal size for each transistor/gate to minimize area or power, both under delay constraint – Static sizing: based on timing analysis and consider all paths at once [ Fishburn File Size: KB. Tutorial on Transistor Sizing Problem #1 (Static CMOS logic): Design a 3-input CMOS NAND gate (PUN/PDN) with fan-out of 3. Total output load of the NAND gate is equal to 15fF and µn/µp = For µm process technology tox = *m, ε ox = 35*F/m. Compare the above design with that of a 3-input NOR (PUN/PDN) gate. Transmission Gate Sizing • Pass transistor sizing optimization (speed/power area) – Ratio of the pass gate vs. driving inverter • Optimization result sensitive to the number of inputs Delay vs. Ratio of Wpassgate/Wdriver 02 4 Ratio (W pass gate / W driver) Delay(ps) 4 to 1 mux single pass gate Delay vs. Ratio of Wpass gate/Wdriver at File Size: KB.

For the circuit to meet a given clocking specification, it is necessary for each combinational stage to satisfy a certain delay requirement. Roughly speaking, increasing the sizes of some transistors in a stage reduces the delay, with the penalty of increased area. The problem of transistor sizing is to minimize the area of a combinational stage, subject to its delay being less than a given by: A transistor sizing tool for optimization of analog CMOS circuits: TSOp Article (PDF Available) in International Journal of Engineering and Technology 7(1) February with Reads. A Transistor magnetic core digital circuit. This book covers the following topics: Significant Time Intervals In The Digital Amplifier Operation Cycle, Requirements For Stable Binary Signal Propagation, Significant Time Intervals In The Digital Amplifier Operation Cycle, Derivation Of The Magnetic Digital Amplifier Transfer-function, An Attempt To Achieve A Satisfactory Element Transfer-function, The . Graph Modeling for Static Timing Analysis at Transistor Level in Nano-Scale CMOS Circuits* the slack time for transistors in any CMOS circuit is the maximum value of delay which can just targets the combinational circuits and ignores the se- quential Size: KB.