A 0, 0);'>1.0 V 77.5 dB Dynamic Range Delta-sigma ADC using Op-Amp Bias Sharing Technique

作者：Kwak Yong Sik; Yun Min Ho; Lee Seung Hoon; Ahn Gil Cho^*

来源：Journal of Semiconductor Technology and Science, 2018, 18(3): 346-351.

DOI：10.5573/JSTS.2018.18.3.346

• Delta-sigma modulator
• analog-to-digital converter
• dynamic biasing
• low-voltage
• opamp bias sharing technique

A second-order single-bit delta-sigma analog-to-digital converter (ADC) is presented in this paper. An op-amp bias sharing technique is used to reduce the power consumption and active area of the ADC. It achieves 77.5 dB dynamic range over 1 kHz signal bandwidth with an oversampling ratio of 512. The total power consumption of the proposed ADC is 27.1 mu W from a 1.0 V power supply. The prototype chip occupies 0.16 mm(2) using a 0.13 mu m CMOS technology.

• 出版日期2018-6