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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Liu Wong, E. Abshire, P.A. Cohen, M.H. |
| Copyright Year | 2004 |
| Description | Author affiliation: Inst. for Syst. Res., Maryland Univ., College Park, MD, USA (Liu Wong, E.; Abshire, P.A.; Cohen, M.H.) |
| Abstract | We present a voltage comparator that uses nonvolatile floating gate charge storage for either offset nulling or automatic programming of a desired offset. We demonstrate the ability to reduce the variance of the initial offset and to accurately program a desired offset. We exploit the negative feedback functionality of pFET hot-electron injection to achieve fully automatic offset cancellation. The design has been fabricated in a commercially available 0.35 /spl mu/m process. Experimental results confirm the ability to reduce the variance of the initial offset by 2 to 3 orders of magnitude and to accurately define a desired offset with maximum observed deviation of 728 /spl mu/V and typical deviation of 109 /spl mu/V. We achieve adaptation with settling time of 50 ms, which is inversely proportional to the exponential of the injection voltage. We achieve controlled injection to accurately program the input offset to voltages uniformly distributed from -1 V to 1 V. The comparator exhibits a 5 ns propagation delay. |
| Sponsorship | IEEE Circuits and Syst. Soc |
| File Size | 505361 |
| File Format | |
| ISBN | 078038251X |
| DOI | 10.1109/ISCAS.2004.1328248 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-05-23 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Voltage Nonvolatile memory Circuits Switches Negative feedback Clocks Educational institutions Storage automation Automatic programming Secondary generated hot electron injection |
| Content Type | Text |
| Resource Type | Article |
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