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Substrate Noise Reduction Based On Noise Aware Cell Design

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4 Author(s)
Salman, E. ; Dept. of Electr. & Comput. Eng., Rochester Univ., NY ; Friedman, E.G. ; Secareanu, R.M. ; Hartin, O.L.

A substrate biasing methodology is introduced based on modifying standard cells by inserting dedicated substrate contacts in those cells behaving as aggressive digital noise generators. These contacts are connected to a dedicated ground network. The proposed approach reduces two primary noise injection mechanisms: ground coupling and source/drain junction coupling. Limitations of the Kelvin biasing scheme are removed while achieving more than a 60% (9 dB) reduction in substrate noise at the cost of a 12% increase in area.

Published in:

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Date of Conference:

27-30 May 2007