Title :
A new temperature-compensated CMOS bandgap reference circuit for portable applications
Author :
Chen, Hou-Ming ; Huang, Chih-Liang ; Chang, Robert C.
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung
Abstract :
This paper presents a new temperature compensation generator (T.C.G.), which is added to a conventional bandgap reference circuit to improve the temperature drift within wider temperature range. The proposed circuit, which operates under the voltages for portable applications, for example 2.5V~5V, has good performances of the line regulation and the temperature coefficient. The proposed circuit is designed by 0.35mum CMOS technology with Vthn=0.80V and |Vthp|=1.0V. The output reference voltage obtained is 500.48plusmn0.061 mV at 27degC. A temperature coefficient of 1.4 ppm/degC from -40degC to 140degC and a line regulation of 0.17mV/V within 2.5V~5.0V supply voltage can be achieved. In addition, the proposed circuit can operate down to a 1.8-V supply
Keywords :
CMOS integrated circuits; compensation; energy gap; integrated circuit design; reference circuits; -40 to 140 C; 0.35 micron; 1.8 V; 27 C; CMOS bandgap reference circuit; CMOS technology; line regulation; temperature coefficient; temperature compensation generator; temperature drift; temperature-compensated reference circuit; CMOS technology; Circuit simulation; Consumer electronics; Digital-analog conversion; Personal digital assistants; Photonic band gap; Temperature dependence; Temperature distribution; Temperature measurement; Voltage;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1692651
