Pipelined analog-digital converters integral nonlinearity modeling for post-correction
2010 (English)In: 17th Symposium IMEKO TC4 - Measurement of Electrical Quantities, 15th International Workshop on ADC Modelling and Testing, and 3rd Symposium IMEKO TC19 - Environmental Measurements, 2010, 585-590 p.Conference paper (Refereed)
An input-dependent integral nonlinearity (INL) model is developed for pipeline ADC post-correction. The INL model consists of a static and dynamic part. The INL model is subtracted from the ADC digital output for compensation. Static compensation is performed by adjacent sets of gains and offsets. Each set compensates a certain output code range. The frequency content of the INL dynamic component is used to design a set of filter blocks that performs ADC compensation in the time domain. The compensation scheme is applied to measured data of two 12-bit ADCs of the same type (Analog Devices AD9430). Significant performance improvements in terms of spurious free dynamic range (SFDR) are obtained.
Place, publisher, year, edition, pages
2010. 585-590 p.
Input-dependent integral nonlinearity (INL), ADC compensation, spurious free dynamic range (SFDR), signal-to-noise and Distortion ratio (SINAD), intermodulation istortion (IMD)
IdentifiersURN: urn:nbn:se:kth:diva-65728ScopusID: 2-s2.0-84872533065ISBN: 978-161782338-1OAI: oai:DiVA.org:kth-65728DiVA: diva2:483560
17th Symposium IMEKO TC4 - Measurement of Electrical Quantities, 15th International Workshop on ADC Modelling and Testing, and 3rd Symposium IMEKO TC19 - Environmental Measurements; Kosice; Slovakia; 8 September 2010 through 10 September 2010
QC 201204182012-01-252012-01-252014-08-15Bibliographically approved