Name
Title | ||
|---|---|---|
Fast Adaptive Comparator Offset Calibration In Pipeline Adc With Self-Repairing Thermometer To Binary Encoder |
Abstract | ||
|---|---|---|
This paper presents a fast background calibration method for comparator offsets in pipeline ADCs and analyzes the practical considerations in a 1.8 V 0.18 mu m 100Msps pipeline ADC with 15-bit resolution (74 dB-Signal-to-noise plus Distortion Ratio [SNDR]). A self-repairing (SR) thermometer-to-binary encoder is developed to deal with malfunctioning in presence of high comparator offsets greater than one-half least-significant bit (LSB). In this situation, the effective thresholds between two adjacent comparators could be inverted leading to a faulty behavior with conventional architectures. The proposed solution allows a dynamic assignment of the calibration code associated to each comparator improving convergence speed. As demonstrator, its application to a 15-bit pipeline ADC using a novel calibrated dynamic-latch comparator (DLC) with internal threshold reference generation and no preamplifier is presented, showing a reduction on the total power consumption of 22% with respect to a design without calibration targeting the same specifications. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1002/cta.2594 | INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS |
Keywords | Field | DocType |
pipeline ADCs, comparator offset, background calibration, dynamic-latch comparators | Comparator,Thermometer,Electronic engineering,Encoder,Offset calibration,Mathematics,Binary number | Journal |
Volume | Issue | ISSN |
47 | 3 | 0098-9886 |
Citations | PageRank | References |
0 | 0.34 | 11 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Antonio Jose Ginés | 1 | 2 | 1.71 |
| Eduardo J. Peralías | 2 | 58 | 16.71 |
| Cristina Aledo | 3 | 0 | 0.34 |
| Adoración Rueda | 4 | 275 | 40.01 |