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

fYear

2015

fDate

25-29 May 2015

Firstpage

62

Lastpage

67

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 σ_TC= 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Communication Technology, Electronics and Microelectronics (MIPRO), 2015 38th International Convention on

Conference_Location

Opatija

Type

conf

DOI

10.1109/MIPRO.2015.7160239

Filename

7160239