A low-voltage band-gap reference circuit with second-order analyses

作者：Liang, Chao-Jui; Chung, Chiu-Chiao; Lin, Hongchin^*

来源：International Journal of Circuit Theory and Applications, 2011, 39(12): 1247-1256.

DOI：10.1002/cta.699

• low-voltage
• band-gap reference
• sub-threshold current
• voltage variation
• second-order analysis

A new band-gap reference (BGR) circuit employing sub-threshold current is proposed for low-voltage operations. By employing the fraction of VBE and the sub-threshold current source, the proposed BGR circuit with chip area of 0.029mm2 was fabricated in the standard 0.18 mu m CMOS triple-well technology. It generates reference voltage of 170mV with power consumption of 2.4 mu W at supply voltage of 1V. The agreement between simulation and measurement shows that the variations of reference voltage are 1.3mV for temperatures from -20 to 100 degrees C, and 1.1mV per volt for supply voltage from 0.95 to 2.5V, respectively.

• 出版日期2011-12
• 单位南开大学