Title :
A 0.8V 1.52MHz MSVC Relaxation Oscillator with Inverted Mirror Feedback Reference for UHF RFID
Author :
Barnett, Ray ; Liu, Jin
Author_Institution :
Texas Instrum., Inc., Dallas, TX
Abstract :
A 0.8V nano-power relaxation oscillator for EPC standard UHF RFID transponder is presented. A low-voltage inverted mirror feedback VGS/R reference is proposed to provide correlated current and voltage references for the oscillator. As a result, the oscillator frequency is solely determined by the resistor in the reference and the timing capacitor to meet the frequency tolerance specification. Meanwhile, to minimize the power consumption, a minimum-supply-voltage-constraint (MSVC) design criterion is proposed to minimize the required supply voltage. The inverted mirror feedback technique reduces the headroom requirement of the traditional VGS /R to meet the MSVC. Measurement results show that the entire oscillator requires a minimum supply voltage of 0.8V in the prototype chip fabricated in CMOS 0.13mum technologies. The measured oscillation frequency is 1.52MHz with 400nA total current consumption. The chip area is 13400mum2
Keywords :
CMOS integrated circuits; low-power electronics; nanoelectronics; radiofrequency identification; relaxation oscillators; 0.13 micron; 0.8 V; 1.52 MHz; 400 nA; CMOS technologies; EPC; MSVC; UHF RFID transponder; inverted mirror feedback reference; minimum supply voltage constraint; prototype chip; relaxation oscillator; voltage references; CMOS technology; Feedback; Frequency; Mirrors; Radiofrequency identification; Resistors; Semiconductor device measurement; Timing; Transponders; Voltage-controlled oscillators;
Conference_Titel :
Custom Integrated Circuits Conference, 2006. CICC '06. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
1-4244-0075-9
Electronic_ISBN :
1-4244-0076-7
DOI :
10.1109/CICC.2006.320975
