A low noise reference generator in Monolithic Active Pixel Sensors for STAR

作者：Wang, J.^*; Gao, D.; Valin, I.; Hu-Guo, C.; Hu, Y.

来源：Journal of Instrumentation, 2010, 5: C12032.

DOI：10.1088/1748-0221/5/12/C12032

• VLSI circuits
• Analogue electronic circuits

In order to reduce the number of cables and gain a lower material budget, this paper presents an on-chip reference generator to provide the clamping voltage in monolithic active pixel sensors (MAPS) for the STAR experiment. It is realized by a regulator utilizing a buffer and a serial RC network. The proposed circuits can achieve good stability, low power dissipation and low noise. Moreover, the output voltage is adjustable to compensate the influence of the process. A prototype has been implemented in a 0.35 mu m CMOS process. Its die area is 327 mu m x 119 mu m. The power dissipation is 677 mu W. The measured results show that 5.3% of the noise in MAPS is induced by the reference generator.

• 出版日期2010-12
• 单位西北工业大学