Title :
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
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;
Conference_Titel :
Next-Generation Electronics (ISNE), 2014 International Symposium on
Conference_Location :
Kwei-Shan
DOI :
10.1109/ISNE.2014.6839354
