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3rd Iranian International Conference on Microelectronics
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
A Low-Power Variable-Resolution Asynchronous Analog-to-Digital Converter |
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| چکیده انگلیسی مقاله |
In this paper, a variable resolution level-crossing analog-to-digital converter (LC-ADC) is proposed which utilizes a miniature feedback network to continuously evaluate the sampling rate and prevent excessive sampling for the parts of the input signal with a high slope. The feedback network is composed of a charge-pump and a multi-level comparator. The quantization window is then dynamically configured according to the signal activity. As a result, by regulating the number of samples, the design of the ADC main building blocks is relaxed regarding the speed and power requirements leading to higher power efficiency. Implemented in a 0.18 µm standard CMOS process, the proposed LC-ADC occupies ~0.0041 mm2 of silicon area and consumes ~18 nW from 1 V supply voltage. Assuming a 1 kHz full-scale input sinusoidal signal, it achieves an average signal-to-noise and distortion ratio (SNDR) of ~43 dB and an effective number of bits (ENOB) of ~6.8 bits. |
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| کلیدواژه‌های انگلیسی مقاله |
Level-Crossing، Adaptive، Variable-Resolution، ADC، Low-Power، Power-Efficient |
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| نویسندگان مقاله |
| Amirhossein Zanjani
| Mohsen Jalali
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| نشانی اینترنتی |
http://iicm2021.modares.ac.ir/browse.php?a_code=A-10-124-1&slc_lang=fa&sid=1 |
| فایل مقاله |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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