Design of a 12-Bit SAR ADC for Neural Signal Acquisition

被引：0

作者：

Yang, Hai-Dong ^{[1
]}

Li, Xiao-Ran ^{[1
]}

Wang, Xing-Hua ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Informat & Elect, Beijing 100081, Peoples R China

来源：

MECHANICS AND MATERIALS SCIENCE | 2018年

关键词：

SAR ADC; Calibration Circuit; Sectional Capacitor Array;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper presents a 12-bits differential successive approximation register ADC (SAR ADC). A calibration circuit is added to improve the accuracy reduction caused by mismatch. And a segmented capacitor array cascaded with a resister-string is adopted to reduce the layout area. The whole circuit design and layout are completed in this paper. The ADC occupies 0.54mm2 in a SMIC180nm technology and operates at 1.8V supply. The simulation results show that the Effective Number of Bits (ENOB) is 11.1 bits, the Signal to Noise and Distortion Ratio (SNDR) is 68.8dB and the Spurious Free Dynamic Range (SFDR) is 74.2dB for an input signal of 10 kHz and 1.2V peak-to-peak voltage with the clock frequency is 6.4MHz..

引用

页码：175 / 184

页数：10

共 4 条

[1] A 128-Channel 6 mW Wireless Neural Recording IC With Spike Feature Extraction and UWB Transmitter [J].

Chae, Moo Sung ;

Yang, Zhi ;

Yuce, Mehmet R. ;

Hoang, Linh ;

Liu, Wentai .

IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 2009, 17 (04) :312-321

[2]

Kuramochi T, 2007, IEEE ASIAN SOLID STA, P224

[3] Micropower CMOS Integrated Low-Noise Amplification, Filtering, and Digitization of Multimodal Neuropotentials [J].

Mollazadeh, Mohsen ;

Murari, Kartikeya ;

Cauwenberghs, Gert ;

Thakor, Nitish .

IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS, 2009, 3 (01) :1-10

[4] The 128-Channel Fully Differential Digital Integrated Neural Recording and Stimulation Interface [J].

Shahrokhi, Farzaneh ;

Abdelhalim, Karim ;

Serletis, Demitre ;

Carlen, Peter L. ;

Genov, Roman .

IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS, 2010, 4 (03) :149-161

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