Title
A 10-mW 16-b 15-MS/s Two-Step SAR ADC With 95-dB DR Using Dual-Deadzone Ring Amplifier
Abstract
Low-noise ring amplifiers required for high-precision analog–digital converters (ADCs) greater than 16 b remain unexplored. This article demonstrates a two-step successive approximation (SAR) ADC achieving 91-dB signal-to-noise-and-distortion-ratio (SNDR) with 6-V differential input resulting in a low-frequency Schreier-figure-of-merit ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\text {FOM}_{S,lf}$ </tex-math></inline-formula> ) of 179.8 dB at 15 MS/s. The state-of-the-art performance is enabled by the ring-amplifier design that enables low noise during amplification and robust control of the transient dynamics. The ADC also features an on-chip residue amplifier (RA) settling characterization using the backend SAR ADC. The ADC is fabricated in a 180-nm CMOS process and occupies an active area of 1.82 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .
Year
DOI
Venue
2019
10.1109/JSSC.2019.2943935
IEEE Journal of Solid-State Circuits
Keywords
Field
DocType
Redundancy,Switches,Timing,Capacitors,Loading,Capacitance,Moon
Dead zone,Computer science,Electronic engineering,Successive approximation ADC,Amplifier
Journal
Volume
Issue
ISSN
54
12
0018-9200
Citations 
PageRank 
References 
2
0.37
0
Authors
8