Efficient numerical methods in non-uniform sampling theory
Numerische Mathematik
A New Class of Asynchronous A/D Converters Based on Time Quantization
ASYNC '03 Proceedings of the 9th International Symposium on Asynchronous Circuits and Systems
Design of Integrated Circuits for Optical Communications
Design of Integrated Circuits for Optical Communications
Operational Amplifiers: Theory and Design
Operational Amplifiers: Theory and Design
Level-crossing ADC performance evaluation toward ultrasound application
IEEE Transactions on Circuits and Systems Part I: Regular Papers - Special section on 2008 custom integrated circuits conference (CICC 2008)
Tracking the best level set in a level-crossing analog-to-digital converter
Digital Signal Processing
| Hi-index | 0.00 |
This paper presents the design of a continuous time voltage comparator with low propagation delay dispersion. The comparator is intended to be used as a building block for a level-crossing AD converter: a type of AD converter where the sampling moments are triggered when an input signal crosses predetermined threshold levels. This type of system sets very high demands on the time measurement and the comparator to achieve the desired performance. The comparator design is based on several techniques to minimize the comparator propagation delay dispersion. The comparator has been implemented in a 0.35 μm BiCMOS process. Measured results show good agreement with simulations. The slew rate related propagation delay dispersion is measured to 90 ps for an input frequency range from 3 to 10 MHz and amplitudes from 200 mV to 1.65 V. The comparator static power consumption is 9 mW.