Title :
A precision 2.5V bandgap voltage reference with excellent initial accuracy of 0.25% for high resolution ADCs
Author :
Huang, Xiaozong ; Zhang, Ling ; Liu, Luncai ; Huang, Wengang ; Zhang, Yanlin ; Yu, Lei
Author_Institution :
Sichuan Inst. of Solid-state Circuits, Chongqing, China
Abstract :
In this paper, a precision 2.5V bandgap voltage reference (BGR) implemented in a commercial 0.6μm mixed-signal CMOS process is presented. This circuit operates on the single power supply of +5V. Experimental results show that the circuit designed delivers an output voltage of 2.5V and achieves the high initial accuracy of better than 0.25% at room temperature, temperature coefficient of 5.3ppm/°C over a wide temperature range of -25°C to +125° after trimming, and the power supply rejection raito (PSRR) of 62dB are achieved. The silicon area of the circuit is about 1.5mm2 which is very suitable for the high resolution data converters.
Keywords :
analogue-digital conversion; energy gap; low-power electronics; mixed analogue-digital integrated circuits; reference circuits; bandgap voltage reference; data converters; high resolution ADC; mixed-signal CMOS process; power supply rejection ratio; temperature -25 degC to 125 degC; voltage 2.5 V; voltage 5 V; Hafnium compounds; Power measurement; Switches;
Conference_Titel :
ASIC (ASICON), 2011 IEEE 9th International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-61284-192-2
Electronic_ISBN :
2162-7541
DOI :
10.1109/ASICON.2011.6157236
