Title

Wideband cascade delta-sigma modulator with digital correction for finite amplifier gain effects

Document Type

Article

Date of Original Version

3-19-1998

Abstract

The authors present an alternative approach to reducing the effects of finite amplifier open-loop gain in cascade delta-sigma modulators. The proposed gain compensation is carried out in the digital domain and thus requires no additional analogue circuitry. The method is illustrated by the example of a double third-order cascade circuit which, when properly compensated for finite gain effects, can yield 16-20 bit resolution with oversampling ratios as low as 16-24.

Publication Title

Electronics Letters

Volume

34

Issue

6

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