Low power successive approximation ADC for biomedical applications

Author

Hsin Huang ; Chia-Nan Wey ; Hwang-Cherng Chow

Author_Institution

Dept. & Grad. Inst. of Electron. Eng., Chang Gung Univ., Taoyuan, Taiwan

fYear

2014

fDate

7-10 May 2014

Firstpage

1

Lastpage

2

Abstract

In this paper, we discuss the low power design of a 1-volt 12-bit analog to digital converter (ADC) for biomedical signal applications. We use both the fixed reference voltage, and the complementary signal generator for the design of the mixed charge serial DAC. It is effective to improve the DAC characteristics. The obtained DNL is +0.08LSB ~ -0.08LSB and INL 0.043~ -0.065LSB respectively. Besides, an offset cancellation and sleep control are designed for the comparator circuit to reduce mismatching error and save power.

Keywords

analogue-digital conversion; biomedical electronics; digital-analogue conversion; low-power electronics; medical signal processing; signal generators; analog to digital converter; biomedical signal applications; comparator circuit; complementary signal generator; fixed reference voltage; low power successive approximation ADC; mismatching error reduction; mixed charge serial DAC design; offset cancellation; power saving; sleep control; voltage 1 V; word length 12 bit; Analog-digital conversion; Approximation methods; Arrays; Capacitors; Registers; Signal generators; Simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Next-Generation Electronics (ISNE), 2014 International Symposium on

Conference_Location

Kwei-Shan

Type

conf

DOI

10.1109/ISNE.2014.6839354

Filename

6839354