Design of Improved Low-Power BiCMOS Reference Voltages

• Main Authors: LIN, WAN-HSUAN, 林倇暄
• Other Authors: LIU, WEI-HSING
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/mrm55x

碩士 === 國立虎尾科技大學 === 電子工程系碩士班 === 107 === This thesis presents four designs of improved low-power BiCMOS circuit for reference voltage circuits. The basic operation principle of the circuit is to generate a positive temperature-coefficient voltage module and a negative temperature-coefficient voltage module separately, then, the positive and negative temperature coefficient voltages generated by the positive temperature coefficient voltage module and the negative temperature coefficient voltage module are offset by the appropriate weight ratio to obtain the zero temperature coefficient reference voltage which does not vary with temperature. Detailed operation principles have been disclosed in this paper. In addition to performing the pre/post-layout simulations with HSPICE simulation program, the proposed circuits have been taped out with 0.35-μm process parameters and 0.18-μm process parameters. The simulation and measurement results are consistent with the theoretical analysis which can prove the feasibility of the proposed circuits. The improved low-power BiCMOS reference voltage circuit proposed in this thesis can be applied to various related analog circuit design as circuit modules.