A multibit modulator in floating-body silicon-on-sapphire for extreme radiation environments
Edwards, C. F., Redman-White, W., Bracey, M., Tenbroek, B. M., Lee, M. S. L. and Uren, M. J. (1999) A multibit modulator in floating-body silicon-on-sapphire for extreme radiation environments. In, European Solid State Circuits Conference, The Hague, The , Netherlands, 22 - 24 Sep 1998. , 937-948.
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Description/Abstract
This paper presents the design of an experimental first-order modulator with 4-bit internal quantization, fabricated in a 1.5-um space-qualified radiation-hard partially depleted silicon-on-sapphire (SOS) digital CMOS process. This converter architecture has been chosen partly to allow investigation into the design of a range of common analog functions with two key issues in mind: one of technology and one environmental. First, both the architecture and the circuit design are optimized using a variety of unconventional techniques to account for the influence of extreme bias-dependent, radiation-induced threshold-voltage shifts of up to 1 V, as well as poort 1/f device noise. Second, the circuitry is specially adapted to accommodate the floating-body behaviour of this type of process, wherein drain conductance varies considerably with drain bias and frequency. The design techniques are directly applicable to very large-scale-integration silicon-on-insulator (SOI) design, where similar device physics are encountered. Notwithstanding the severe constraints on the design, the fabricated circuit provides 9.7 bits of dynamic range in a 63-kHz signal bandwidth, only degrading to 9.1 bits after 23 Mrad(Si) of total dose v radiation.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Additional Information: | Event Dates: 22-24 September 1998 |
| Divisions: | Faculty of Physical and Applied Science > Electronics and Computer Science > NANO |
| Item ID: | 259905 |
| Date Deposited: | 03 Sep 2004 |
| Last Modified: | 02 Mar 2012 12:21 |
| Contributors: | Edwards, C. F. (Author) Redman-White, W. (Author) Bracey, M. (Author) Tenbroek, B. M. (Author) Lee, M. S. L. (Author) Uren, M. J. (Author) |
| Date: | 1999 |
| Additional Information: | Event Dates: 22-24 September 1998 |
| Status: | Published |
| Further Information: | Google Scholar |
| URI: | http://eprints.soton.ac.uk/id/eprint/259905 |
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