A high-fidelity decimator chip for the measurement of sigma-delta modulator performance

Author

Kale, Izzet ; Morling, Richard C S ; Krukowski, Artun ; Tsang, Chung-Wai

Author_Institution

Westminster Univ, London, UK

Volume

44

Issue

5

fYear

1995

fDate

10/1/1995 12:00:00 AM

Firstpage

933

Lastpage

939

Abstract

This paper reports on results from the algorithmic design and simulation of a two-path polyphase decimation filter with 24-bit accuracy over the frequency range from dc to 15.2 kHz. The filter is suited for very high precision data conversion and measurement applications. The device reported in this paper has been designed for use with a fourth-order, single-loop, ΣΔ modulator running at 4096 kHz. Results of floating and fixed-point simulations, architectural design, comparative bit-level simulations and silicon implementation of the decimator are also reported, together with a sample baseband measurement of a fourth-order modulator

Keywords

CMOS digital integrated circuits; IIR filters; all-pass filters; cascade networks; circuit analysis computing; digital arithmetic; floating point arithmetic; sigma-delta modulation; 0 to 15.2 kHz; 24-bit accuracy; 4096 kHz; CMOS filter; IIR all pass filter; algorithmic design; algorithmic simulation; architectural design; bit-level simulation; coefficient design algorithm; decimator cascade; fixed-point simulation; floating-point simulation; fourth-order single-loop ΣΔ modulator; high precision data conversion; high-fidelity decimator chip; magnitude response; measurement applications; sample baseband measurement; sigma-delta modulator performance measurement; silicon implementation; two-path polyphase decimation filter; Algorithm design and analysis; Baseband; Delta-sigma modulation; Digital filters; Digital signal processing; Finite impulse response filter; IIR filters; Passband; Semiconductor device measurement; Silicon;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.414503

Filename

414503