A 12-bit 30 MS/s Successive Approximation-Register Analog-to-Digital Converter with Foreground Digital Calibration Algorithm
| Autor: | Jianjun Chen, Bin Liang, Yang Guo, Shouping Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
comparator offset
Spurious-free dynamic range Differential nonlinearity Physics and Astronomy (miscellaneous) Comparator 12-bit Computer science General Mathematics Analog-to-digital converter 02 engineering and technology 01 natural sciences law.invention Least significant bit law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Computer Science (miscellaneous) Electronic engineering digital calibration 010308 nuclear & particles physics lcsh:Mathematics capacitor mismatch lcsh:QA1-939 Effective number of bits Integral nonlinearity Chemistry (miscellaneous) SARADC 020201 artificial intelligence & image processing |
| Zdroj: | Symmetry Volume 12 Issue 1 Symmetry, Vol 12, Iss 1, p 165 (2020) |
| ISSN: | 2073-8994 |
| DOI: | 10.3390/sym12010165 |
| Popis: | This paper presents a foreground digital calibration algorithm based on a dynamic comparator that aims to reduce comparator offset and capacitor mismatch, as well as improve the performance of the successive approximation analog-to-digital converter (SARADC). The dynamic comparator is designed with two preamplifiers and one latch to facilitate high speed, high precision, and low noise. The foreground digital calibration algorithm provides high speed with minimal area consumption. This design is implemented on a 12-bit 30 MS/s SARADC with a standard 0.13 &mu m Complementary Metal Oxide Semiconductor (CMOS) process. The simulation Nyquist 68.56 dB signal-to-noise-and-distortion ratio (SNDR) and 84.45 dBc spurious free dynamic range (SFDR) at 30 MS/s, differential nonlinearity (DNL) and integral nonlinearity (INL) are within 0.64 Least Significant Bits (LSB) and 1.3 LSB, respectively. The ADC achieves an effective number of bits (ENOB) of 11.08 and a figure-of-merit (FoM) of 39.45 fJ/conv.-step. |
| Databáze: | OpenAIRE |
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