Title :
Design of a power supply and voltage references for a wirelessly powered ADC in 0.18-µm CMOS
Author :
Bako, Niko ; Butkovic, Zeljko ; Baric, Adrijan
Author_Institution :
Fac. of Electr. Eng. & Comput., Univ. of Zagreb, Zagreb, Croatia
Abstract :
A low power tag with integrated ADC designed in 0.18-μm CMOS process is presented. The tag extracts energy from electromagnetic waves and stores the charge on external capacitor. The stored charge is used to supply the tag circuitry: supply unit, current and voltage references and voltage regulators and ADC. The obtained referent voltage shows good stability over process, voltage and temperature variations. The mean value of the reference voltage is 485.8 mV and the standard deviation is σ= 7 mV in the temperature range -10° to 70°. The mean temperature coefficient (TC) is 7 ppm/°C and the standard deviation is σTC= 30 ppm/°C in the same temperature range.
Keywords :
CMOS integrated circuits; analogue-digital conversion; capacitors; low-power electronics; power supply circuits; reference circuits; voltage regulators; CMOS process; current references; electromagnetic waves; external capacitor; integrated ADC; low power tag; power supply; size 0.18 mum; supply unit; tag circuitry; temperature -10 degC to 70 degC; voltage 485.8 mV; voltage references; voltage regulators; wirelessly powered ADC; Capacitors; Integrated circuit modeling; Power demand; Radio frequency; Regulators; Transistors; Voltage control;
Conference_Titel :
Information and Communication Technology, Electronics and Microelectronics (MIPRO), 2015 38th International Convention on
Conference_Location :
Opatija
DOI :
10.1109/MIPRO.2015.7160239
