DocumentCode :
1906729
Title :
A Low-Cost CMOS Integrated Dual-Mode Dual-Slope ADC with Synchronous Rectification Circuit for AC/DC Signal Measuring
Author :
Chiang, Cheng-Ta ; Kao, Li-Lung ; Huang, Yu-Chung
Author_Institution :
Mixed Signal Design Technol. Div., Ind. Technol. Res. Inst., Hsinchu
fYear :
2008
fDate :
12-15 May 2008
Firstpage :
165
Lastpage :
169
Abstract :
A lost-cost CMOS integrated dual-mode dual-slope ADC with synchronous rectification circuit for AC/DC signal measuring is newly proposed. Instead of traditional full wave rectifier, an improved synchronous rectifier is implemented. To realize the simplified architecture, we use only one comparator, one OP, and switches. The advantage is that it could not only support wider bandwidth for AC signal measurements from 60 Hz to 100.2 kHz, but also provide DC signals´ digitization. It could be realized by even fewer chip area where by this dual-mode dual-slope ADC is realized in a 0.25-um 1p5m CMOS technology with a chip area 710 times 630 mum2. Simulation results show that ADC achieves 8-bit resolution in DC mode and 7-bit resolution in AC mode with 100 kHz signal bandwidth. Total power consumption is 5 mW.
Keywords :
CMOS integrated circuits; analogue-digital conversion; rectifiers; AC/DC signal measuring; low-cost CMOS integrated dual-mode dual-slope ADC; synchronous rectification circuit; Bandwidth; CMOS technology; Circuit simulation; Costs; Industrial electronics; Integrated circuit measurements; Integrated circuit technology; Semiconductor device measurement; Signal design; Signal resolution; Analog to Digital Conversion; Dual Mode Dual Slope ADC; Synchronous Rectification;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Instrumentation and Measurement Technology Conference Proceedings, 2008. IMTC 2008. IEEE
Conference_Location :
Victoria, BC
ISSN :
1091-5281
Print_ISBN :
978-1-4244-1540-3
Electronic_ISBN :
1091-5281
Type :
conf
DOI :
10.1109/IMTC.2008.4547024
Filename :
4547024
Link To Document :
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