Power on reset circuit of 915MHz RFID tags

Zhaomin Wang; Daolin Cai; Zhongqian Fu; Houpeng Chen; Zhitang Song

doi:10.1117/12.2016535

24 January 2013 Power on reset circuit of 915MHz RFID tags

Zhaomin Wang, Daolin Cai, Zhongqian Fu, Houpeng Chen, Zhitang Song

Proceedings Volume 8782, 2012 International Workshop on Information Storage and Ninth International Symposium on Optical Storage; 878210 (2013) https://doi.org/10.1117/12.2016535
Event: 2012 International Workshop on Information Data Storage and Ninth International Symposium on Optical Storage, 2012, Shanghai, China

Abstract

Power on reset circuit provides a reset signal for the entire system into normal working condition. When power reaches normal operating voltage and remains stable, power on reset circuit provides one rectangular pulse signal which has a steep edge for the digital baseband part of the tag. After reset, POR circuit is isolated with the follow-up circuits, having good stability. In this paper, we designed two new static ultra-low power consumption power-on reset circuits. The first circuit uses Schmitt triggers for signal threshold detection and a certain delay. The peak current of the first circuit is 31uA, with a static current being 33 pA. The second circuit is based on a clamp circuit and PMOS gate cross-coupled circuit which greatly reduces the static current (190 pA). And the peak current of the second circuit is 21 μA.

Citation Download Citation

Zhaomin Wang, Daolin Cai, Zhongqian Fu, Houpeng Chen, and Zhitang Song "Power on reset circuit of 915MHz RFID tags", Proc. SPIE 8782, 2012 International Workshop on Information Storage and Ninth International Symposium on Optical Storage, 878210 (24 January 2013); https://doi.org/10.1117/12.2016535

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