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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Rithe, R. Jie Gu Wang, A. Datla, S. Gammie, G. Buss, D. Chandrakasan, A. |
| Copyright Year | 2010 |
| Description | Author affiliation: Texas Instruments, Dallas, 75243, USA (Jie Gu; Wang, A.; Datla, S.; Gammie, G.; Buss, D.) || Massachusetts Institute of Technology, Cambridge, 02139, USA (Rithe, R.; Chandrakasan, A.) |
| Abstract | For CMOS feature size of 65 nm and below, local (or intra-die or within-die) variations in transistor Vt contribute stochastic variation in logic delay that is a large percentage of the nominal delay. Moreover, when circuits are operated at low voltage (Vdd ≤ 0.5V), the standard deviation of gate delay becomes comparable to nominal delay, and the Probability Density Function (PDF) of the gate delay is highly non-Gaussian. This paper presents a computationally efficient algorithm for computing the PDF of logic Timing Path (TP) delay, which results from local variations. This approach is called Non-linear Operating Point Analysis for Local Variations (NLOPALV). The approach is implemented using commercial STA tools and integrated into the standard CAD flow using custom scripts. Timing paths from a 28nm commercial DSP are analyzed using the proposed technique and the performance is observed to be within 5% accuracy compared to SPICE based Monte-Carlo analysis. |
| Starting Page | 965 |
| Ending Page | 968 |
| File Size | 498618 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424470549 |
| ISSN | 15301591 |
| e-ISBN | 9783981080162 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-03-08 |
| Publisher Place | Germany |
| Access Restriction | Subscribed |
| Rights Holder | European Design Automation Association (EDAA) |
| Subject Keyword | Statistical analysis Timing Low voltage Delay CMOS logic circuits Performance analysis Stochastic processes Probability density function Digital signal processing SPICE Statistical Design SSTA Local Variations Low-voltage |
| Content Type | Text |
| Resource Type | Article |
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