Next Article in Journal
Efficient Lattice CP-ABE AC Scheme Supporting Reduced-OBDD Structure for CCN/NDN
Previous Article in Journal
On Neutrosophic Extended Triplet LA-hypergroups and Strong Pure LA-semihypergroups
Open AccessArticle

A 12-bit 30 MS/s Successive Approximation-Register Analog-to-Digital Converter with Foreground Digital Calibration Algorithm

Department of Microelectronics, College of Computer Science, National University of Defense Technology, Changsha 410073, China
*
Author to whom correspondence should be addressed.
Symmetry 2020, 12(1), 165; https://doi.org/10.3390/sym12010165
Received: 25 November 2019 / Revised: 28 December 2019 / Accepted: 11 January 2020 / Published: 14 January 2020
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 μm 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.
Keywords: SARADC; digital calibration; comparator offset; capacitor mismatch SARADC; digital calibration; comparator offset; capacitor mismatch
MDPI and ACS Style

Li, S.; Guo, Y.; Chen, J.; Liang, B. A 12-bit 30 MS/s Successive Approximation-Register Analog-to-Digital Converter with Foreground Digital Calibration Algorithm. Symmetry 2020, 12, 165.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop