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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jin, C. Li, Y. Li, R. Hu, S. Ding, L. Li, H. Zhang, S. |
| Copyright Year | 2011 |
| Abstract | A 3-D ring oscillator integrated with through silicon vias (TSVs) is designed and fabricated for testing multilayer-stacked integrated circuits (ICs) with TSV. The proposed 3-D ring oscillator consists of 13 stages and 65-nm Complementary Metal-Oxide-Semiconductor Transistor (CMOS) dies with two current-starved inverters and via-last TSVs designed for the five middle layers of the 3-D ring oscillator. The two cascaded inverters are connected to the upside layer through a TSV and to the downside layer through a microbump. One chip with two inverters but without TSV is stacked in the top layer of the 3-D ring oscillator to realize the ring oscillator loop, and one logic chip with one inverter and via-middle TSVs are in the bottom of the ring oscillator. The characteristics of via-last and via-middle TSVs in the 3-D ring oscillator are analyzed based on the equivalent circuits. The oscillation frequency responses of the designed 3-D ring oscillator are measured finally to verify the design concept, and to assess the performance of the 3-D ring oscillator. The measured results demonstrate that the proposed 3-D ring oscillator is an attractive candidate for testing the stacked 3-D IC, and the effect of TSVs dominates the delay of the 3-D ring oscillator. |
| Starting Page | 217 |
| Ending Page | 224 |
| Page Count | 8 |
| File Size | 3025639 |
| File Format | |
| ISSN | 21563950 |
| Volume Number | 5 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Ring oscillators Through-silicon vias Inverters Delays CMOS integrated circuits Capacitance via-middle TSV. 3-D integrated circuit (3-D IC) 3-D ring oscillator through silicon via (TSV) via-last TSV |
| Content Type | Text |
| Resource Type | Article |
| Subject | Industrial and Manufacturing Engineering Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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