Accurate Dual Slope Analog-to-Digital Converter Using Bootstrap Circuit

This paper presents a simple and inexpensive implementation of the accurate dual slope analog-to-digital converter (ADC). The proposed technique with positive reference voltage takes advantages of a bootstrap circuit to function as a precise noninverting/ inverting integrator. To achieve the constan...

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Bibliographic Details
Main Authors: Julsereewong, A., Pongswatd, S., Riewruja, V., Sasaki, H., Fujimoto, K., Yan Shi
Format: Conference Proceeding
Language:English
Subjects:
Analog-digital conversion
Capacitors
Circuit noise
Feedback loop
Leakage current
Negative feedback
Operational amplifiers
Power supplies
Switches
Voltage control
Online Access:Request full text
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Summary:This paper presents a simple and inexpensive implementation of the accurate dual slope analog-to-digital converter (ADC). The proposed technique with positive reference voltage takes advantages of a bootstrap circuit to function as a precise noninverting/ inverting integrator. To achieve the constant reference voltage during integrating analog input voltage interval, a sample/hold (S/H) circuit is employed. Experimental results are given to confirm the operation of the proposed ADC.
DOI:10.1109/ICICIC.2009.65