A 6-bit Pipelined Analog-to-Digital Converter with Open-Loop Residue Amplification and Digital Self-Calibration
Date Issued
2004
Date
2004
Author(s)
Chen, Yu-Hsun
DOI
en-US
Abstract
By aggressive device scaling in modern integrated circuit technology, the computing power of digital circuits increases significantly. But the low power supply and relative high threshold voltage of transistors exhibit design constraints for analog circuit. Analog-to-digital converters provide the link between the analog world and the digital system. Due to their extensive use of analog and mixed analog-digital operations, A/D converters often appear as the bottleneck in data processing applications, limiting the overall speed or precision.
For the increasing demand for portability and system-on-a-chip (SoC) integration, low-power dissipation and the compatibility with deep-submicron technology have emerged as important metrics in state-of-the-art ADC design. In SoC implementations, data converters are embedded on the same chip with powerful fine-line digital signal processing, resulting in a limited budget for their total heat and power consumption.
In this thesis, we describe the implementation and measurement results of a 6-bit pipelined ADC with open-loop residue amplification and digital self-calibration. Employing open-loop amplifiers in one-bit-conversion-per-stage architecture, the circuit operates in high speed and low power consumption. Using a constant-gm biasing technique, the open-loop amplifier is process-and-temperature insensitive. Comparator offset and full-scale error are removed by digital self-calibrated correction mechanism. Because of no requirement of MIM or PIP capacitors, this design is capable to be fabricated in digital process. Designed in a 0.13-μm technology and powered 1.2-V supply voltage, the A/D converter operates at 500-MHz clock-rate while dissipating 13.2 mW.
Subjects
數位自行校正
導管式類比數位轉換器
開迴路殘值增益
open-loop residue amplification
digital self-calibration
pipelined A/D converter
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-93-R91943019-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):3f9fb89723b09ccce1d1d585830381cd