A high-performance calibration-free charge balancing analog-to-digital converter

Author

Sabouri, Faramarz ; Trofirnenkoff, F.N. ; Haslett, J.W.

Author_Institution

Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada

Volume

45

Issue

5

fYear

1996

fDate

10/1/1996 12:00:00 AM

Firstpage

847

Lastpage

853

Abstract

This paper describes a robust charge-balancing analog-to-digital converter (ADC) for dc-voltage measuring applications. The converter, utilizing a continuous-time chopper-stabilized pulse-width modulator, has achieved an absolute accuracy of 20 bits at room temperature, without any trimming or calibration. Within a temperature range of -50°C to 125°C, the accuracy changes with a temperature coefficient of 0.05 ppm/°C. The modulator is implemented by employing commercial discrete components

Keywords

analogue-digital conversion; error compensation; modulators; performance evaluation; pulse width modulation; stability; voltage measurement; -50 to 125 C; ADC; absolute accuracy; charge balancing analog-to-digital converter; commercial discrete components; continuous-time chopper-stabilized pulse-width modulator; dc-voltage measuring applications; temperature coefficient; Analog-digital conversion; Delta modulation; Digital modulation; Frequency; Pulse modulation; Pulse width modulation; Space vector pulse width modulation; Temperature distribution; Temperature sensors; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.536700

Filename

536700