Embedded servo loop for ADC linearity testing

TitleEmbedded servo loop for ADC linearity testing
Publication TypeJournal Article
Year of Publication2002
AuthorsZhao, Z. R., and A. Ivanov
JournalMicroelectronics Journal
Volume33
Pagination773–780
ISSN0026-2692
Abstract

A novel embedded servo loop is proposed for testing the differential nonlinearity (DNL) and integral nonlinearity (INL) of analog-to-digital converters (ADCs). An integrator whose integration time is precisely controlled by a delay line is the key part of the servo loop circuitry. The analog part of the servo loop is very simple and does not need calibration while the digital part can be synthesized from a hardware description language. The servo loop does not alter the architecture and operation of the ADC under test and can be used to test any kind of ADC. The servo loop occupies a small area and is suitable for built-in self-test application. The measurement results for DNL and INL are transformed into a digital representation, and the measurement resolution and error are determined by the delay of standard digital gates. Simulation results are reported for an embedded servo loop implemented in 0.35 mum CMOS technology. (C) 2002 Elsevier Science Ltd. All rights reserved.

a place of mind, The University of British Columbia

Electrical and Computer Engineering
2332 Main Mall
Vancouver, BC Canada V6T 1Z4
Tel +1.604.822.2872
Fax +1.604.822.5949
Email:

Emergency Procedures | Accessibility | Contact UBC | © Copyright 2021 The University of British Columbia