RADIO FREQUENCY IDENTIFICATION TAG AND LOW DROPOUT REGULATOR (LDO) CIRCUIT CONSUMING ULTRA-LOW POWER

WIPO Patent Application WO/2014/107936

A1

A radio frequency identification (RFID) tag and a low dropout regulator (LDO) circuit consuming ultra-low power. The circuit is connected to a first threshold unit and a second threshold unit respectively and in series at a first voltage dividing resistor (R1) bypass and a second voltage dividing resistor (R2) bypass; utilizes the inherent threshold property of a unidirectional conductive diode or a MOS tube in the threshold units, and the voltage difference between the positive input terminal of an error-correction differential amplifier and a voltage output terminal (Vout), and the voltage differences between the voltage of the positive input terminal to the voltage output terminal and the voltage of the positive input terminal to a ground wire terminal of the error-correction differential amplifier are respectively borne by the threshold units; therefore, the remaining voltage on a resistor connected in the circuit in series will be a small value, thus effectively reducing the power consumption of the resistor. Furthermore, compared with a normal structure using a resistor alone, the structure connecting a diode or an MOS tube in series in a resistor bypass can greatly reduce the overall area of a chip under the same power consumption, thus reducing cost.

WU PATRICK BIAN (CN)
XU WEI (CN)
HAN FUQIANG (CN)
QI SHEHU (CN)
LUO YUANMING (CN)

PCT/CN2013/073893

July 17, 2014

April 08, 2013

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EXCELIO TECHNOLOGY SHENZHEN CO LTD (CN)
WUXI EXCELIO TECHNOLOGY CO LTD (CN)

G05F1/56; G06K19/00

US20050088223A1	2005-04-28
JP2003243516A	2003-08-29
US5434533A	1995-07-18
CN102645945A	2012-08-22
CN102237862A	2011-11-09

SHENZHEN ZHONGYI PATENT AND TRADEMARK OFFICE (CN)
深圳中一专利商标事务所 (CN)

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