Title :
A 0.6V to 1.6V, 46μW voltage and temperature independent 48 MHz pulsed LC oscillator for RFID tags
Author :
De Smedt, Valentijn ; Gielen, Georges ; Dehaene, Wim
Author_Institution :
Dept. Elektrotech., Katholieke Univ. Leuven, Heverlee, Belgium
Abstract :
A low-power oscillator based on a pulsed LC tank is presented in this article. The frequency is determined by a bondwire inductor and a MiM capacitor to obtain a high-Q LC tank. Due to a novel way of driving the LC tank, the power consumption is diminished. Since the driving technique only interacts during a very short period with the LC tank, the frequency mainly depends on the stable LC tank and the temperature and supply voltage dependency is lowered drastically. The samples were measured over a 0.6 to 1.6V supply range and a -40 to 100°C temperature range. A temperature dependency of 92 ppm/°C and a voltage dependency of 73 ppm/V is obtained. The frequency standard deviation over 12 automatically bonded samples is 0.76% (359 KHz).
Keywords :
LC circuits; MIM devices; capacitors; inductors; low-power electronics; oscillators; radiofrequency identification; MiM capacitor; RFID tags; bondwire inductor; driving technique; frequency 48 MHz; frequency standard deviation; high-Q LC tank; low-power oscillator; power 46 muW; power consumption; pulsed LC tank; stable LC tank; temperature -40 degC to 100 degC; temperature-independent pulsed LC oscillator; voltage 0.6 V to 1.6 V; voltage-independent pulsed LC oscillator; Capacitors; Inductors; Mathematical model; Oscillators; Power demand; Q factor; Resistance;
Conference_Titel :
Solid State Circuits Conference (A-SSCC), 2011 IEEE Asian
Conference_Location :
Jeju
Print_ISBN :
978-1-4577-1784-0
DOI :
10.1109/ASSCC.2011.6123616
