Title :
Design of low-voltage bandgap reference using transimpedance amplifier
Author :
Jiang, Yueming ; Lee, Edward K F
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA
fDate :
6/1/2000 12:00:00 AM
Abstract :
The minimum supply voltage for implementing a typical bandgap reference is usually over 1.8 V. This minimum is mainly due to the limited input common-mode range of the opamp used in the bandgap reference. In this work, a low-voltage bandgap reference using a transimpedance amplifier that does not have this limitation is proposed and some of the design considerations for the proposed technique are briefly discussed. Based on this technique, a 1.2-V bandgap reference was implemented in a 1.2-μm CMOS process (VTN≈0.53 V and VTP≈-0.91 V) with bipolar option. The variations of the output voltage over temperature (0°C⩽T⩽100°C) were measured to be less than ±1%
Keywords :
CMOS analogue integrated circuits; differential amplifiers; integrated circuit design; low-power electronics; reference circuits; 0 to 100 C; 1.2 V; 1.2 micron; CMOS proces; LV bandgap reference design; low-voltage bandgap reference; transimpedance amplifier; Analog circuits; Analog integrated circuits; CMOS process; Digital integrated circuits; Dynamic voltage scaling; Integrated circuit measurements; Low voltage; Photonic band gap; Temperature; Threshold voltage;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
