Title :
New low voltage, high PSRR, CMOS bandgap voltage reference
Author :
Ashrafi, S.F. ; Atarodi, S.M. ; Chahardori, M.
Abstract :
A new low voltage bandgap reference (BGR) in CMOS technology, with high power supply rejection ratio (PSRR) is presented. The proposed circuit uses a regulated current mode structure and some feedback loops to reach a low voltage, low power and high PSRR voltage reference. The circuit was designed and simulated in 0.18 um CMOS technology, with a power supply of 1.4 volt. The results show PSRR is 65dB at 1 MHz and the output voltage variation versus temperature (-40 to 140) is less than 0.1%. This circuit shows robustness against process variation.
Keywords :
CMOS integrated circuits; power supply circuits; CMOS technology; frequency 1 MHz; low voltage bandgap reference; power supply rejection ratio; regulated current mode structure; size 0.18 mum; voltage 1.4 V; Batteries; CMOS technology; Circuit noise; Current supplies; Digital circuits; Feedback loop; Low voltage; Photonic band gap; Power supplies; Temperature dependence; Bandgap reference; CMOS analog circuit design; High PSRR; Low voltage;
Conference_Titel :
SOC Conference, 2008 IEEE International
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4244-2596-9
Electronic_ISBN :
978-1-4244-2597-6
DOI :
10.1109/SOCC.2008.4641542
