A Low-power High-resolution Band-pass Sigma-delta ADC for Accelerometer Applications

作者：Cao Tianlin; Han Yan^*; Zhang Shifeng; Cheung, Ray C. C.; Chen Yaya

来源：Journal of Semiconductor Technology and Science, 2017, 17(3): 438-445.

DOI：10.5573/JSTS.2017.17.3.438

• Band pass
• Sigma Delta ADC
• low-power
• high-resolution
• accelerometer

This paper presents a low-power high-resolution band-pass Sigma Delta ADC for accelerometer applications. The proposed band-pass Sigma Delta ADC consists of a high-performance 6-th order feed-forward Sigma Delta modulator with 1-bit quantization and a low-power, area-efficient digital filter. The ADC is fabricated in 180 nm 1P6M mixed-signal CMOS process with a die area of 5 mm(2). This high-resolution ADC got 90 dB peak signal to noise plus distortion ratio (SNDR) and 96 dB dynamic range (DR) over 4 kHz bandwidth, while the intermediate frequency (IF) is shifting from 100 KHz to 200 KHz. The power dissipation of the chip is 5.6 mW under 1.8 V (digital)/3.3 V (analog) power supply.

• 出版日期2017-6
• 单位浙江大学