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Conference Paper
A Dynamic Range Extendable ADC for Accurate Sensors
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- Authors
- Hong-Soon Nam, Wan-Ki Park, Jong Won Park, Changsoo Eun
- Issue Date
- 2022-02
- Citation
- International Conference on Electronics, Information and Communication (ICEIC) 2022, pp.627-628
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper presents a dynamic range extendable analog-to-digital converter (ADC) for accurate sensors, which consists of a variable gain amplifier (VGA), a sub-ADC and a decoder. The VGA adjusts the input signal to the full scale of the sub-ADC. The decoder maintains that the least significant bit (LSB) of the proposed ADC represents the same amount of physical quantity. The sub-ADC can be a discrete ADC or an ADC in a microcontroller. Analysis results of noise figure shows that the proposed ADC can extend the dynamic range and improve resolution of the sub-ADC.