A 0.13 μm-200 MHz High-speed Continuous Time Sigma-Delta Modulator

LI Liang, CHEN Zhen-hai. A 0.13 μm-200 MHz High-speed Continuous Time Sigma-Delta Modulator[J]. Microelectronics & Computer, 2013, 30(1): 126-130.

Citation:

LI Liang, CHEN Zhen-hai. A 0.13 μm-200 MHz High-speed Continuous Time Sigma-Delta Modulator[J]. Microelectronics & Computer, 2013, 30(1): 126-130.

Citation:

LI Liang, CHEN Zhen-hai. A 0.13 μm-200 MHz High-speed Continuous Time Sigma-Delta Modulator[J]. Microelectronics & Computer, 2013, 30(1): 126-130.

Abstract

A high-speed continuous-time Sigma-Delta modulator is designed with SMIC 130 nm CMOS process in this paper.The modulator adopts a single loop three-order positive feedback structure with a quantitative.The modulator reached a 2 MHz bandwidth and 75 dB dynamic range in 128 MSPS and over-sampling rate of 32,by tools of spectre and matlab.The total power dissipation is 20mW at 1.2V power supply.

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