A 10-bit pipelined switched-current A/D converter
- 1 January 1994
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Solid-State Circuits
- Vol. 29 (8) , 967-971
- https://doi.org/10.1109/4.297705
Abstract
A modified RSD algorithm has been implemented in a switched-current pipelined A/D converter. The offset insensitivity of the RSD converter reduces the effect of several nonidealities proper to current copier cells. Moreover, the benefits resulting from the large tolerances inherent to the RSD algorithm and the pipelined architecture result in an improved conversion rate. Measurements on a first prototype give an integral nonlinearity error less than 0.8 LSB for 10-bit accuracy. Power dissipation is 20 mW and silicon area is 2.5 mm2. The measured sampling rate is 550 kS/s. It is an improvement by a factor-of twenty compared to known equivalent CMOS switched-current converters. It is nevertheless still well below the predicted conversion rate of 4.5 MHz, which should be obtained once this A/D converter is integrated into an analog front-end. Full compatibility with standard digital technologies makes this kind of converter attractive for low power, medium-fast converters with 10-bit accuracyKeywords
This publication has 13 references indexed in Scilit:
- A pipelined 9-stage video-rate analog-to-digital converterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A 14 bit CMOS A/D converter based on dynamic current memoriesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Charge injection in current copier cellsElectronics Letters, 1993
- A CMOS 13-b cyclic RSD A/D converterIEEE Journal of Solid-State Circuits, 1992
- A transistor-only current-mode Sigma Delta modulatorIEEE Journal of Solid-State Circuits, 1992
- Analysis and improvements of accurate dynamic current mirrorsIEEE Journal of Solid-State Circuits, 1990
- Regulated cascode switched-current memory cellElectronics Letters, 1990
- Operation and analysis of current copier circuitsIEE Proceedings G Circuits, Devices and Systems, 1990
- A self-calibration technique for monolithic high-resolution D/A convertersIEEE Journal of Solid-State Circuits, 1989
- Current copier cellsElectronics Letters, 1988