Analysis of a switched ultra-low power bandgap reference source for passive RFID tags

Author

Schulze, Johannes G. ; Spiegel, Solon J.

Author_Institution

Tech. Univ. Dresden, Dresden, Germany

fYear

2013

fDate

21-23 Oct. 2013

Firstpage

1

Lastpage

5

Abstract

In this paper, a switched ultra-low power bandgap reference source is presented that consumes 185nA and requires a minimum supply voltage of 1.2V. Circuit details to achieve the low power dissipation are discussed and simulation results are demonstrated. Process variations are considered. The reference source is part of a passive RFID tag analog front-end that is compliant with the EPCglobal Class1 Gen2 standard. As technology, a TowerJazz 0.18 um standard logic process is used. The bandgap reference provides a supply-independent PTAT current and a bandgap voltage of 1.05V, which exhibit a minimum PSRR of 120 dBOhm and 40dB, respectively. The start-up requires 750 us.

Keywords

analogue integrated circuits; low-power electronics; radiofrequency identification; standards; EPCglobal Class1 Gen2 standard; TowerJazz logic process; analog front-end; current 185 nA; low power dissipation; passive RFID tags; reference source; size 0.18 mum; supply-independent PTAT current; switched ultralow power bandgap; voltage 1.05 V; Low-power electronics; Passive RFID tags; Photonic band gap; Regulators; Standards; Switches; Voltage control; RFID; bandgap; passive transponder; reference source; switch-mode operation; ultra-low power;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwaves, Communications, Antennas and Electronics Systems (COMCAS), 2013 IEEE International Conference on

Conference_Location

Tel Aviv

Type

conf

DOI

10.1109/COMCAS.2013.6685258

Filename

6685258