Title :
Low power current mode bandgap reference circuit with CMOS process
Author :
Xing-hua, Wang ; Shun-an, Zhong ; Qi, Zhao ; Ruoyuan, Qu
Author_Institution :
Dept. of Electron. Eng., Beijing Inst. of Technol., Beijing, China
Abstract :
A low power design of CMOS bandgap reference of current mode used in analog-to-digital converter is proposed to obtain stable reference current and voltage. It realizes low power by one-order temperature compensation, resistance startup block, optimized internal operational amplifier and a new designed reference voltage buffer instead of closed loop. Under SMIC CMOS 0.35um 1P6M process and simulated by Spectre in Cadence, the circuit offers the current output of 50uA and the voltage output of 0.95V, 2V and 2.6v with a temperature coefficient of 50×10-6°C-1 in the range of -40~125°C. With the 3.3V supply, the power in test is lower than 0.2mW.
Keywords :
CMOS digital integrated circuits; analogue-digital conversion; low-power electronics; operational amplifiers; CMOS bandgap reference; Cadence; SMIC CMOS 1P6M process; Spectre; analog-to-digital converter; current 50 muA; internal operational amplifier; low power current mode bandgap reference circuit; low power design; one-order temperature compensation; reference voltage buffer; resistance startup block; size 0.35 mum; temperature -40 degC to 125 degC; voltage 0.95 V; voltage 2 V; voltage 2.6 V; voltage 3.3 V; Analog-digital conversion; CMOS process; Circuit simulation; Circuit testing; Design optimization; Operational amplifiers; Photonic band gap; Power supplies; Temperature distribution; Voltage;
Conference_Titel :
Semiconductor Electronics (ICSE), 2010 IEEE International Conference on
Conference_Location :
Melaka
Print_ISBN :
978-1-4244-6608-5
DOI :
10.1109/SMELEC.2010.5549412
