A low-voltage, multibit sigma-delta modulator for wideband applications

Author

Lampinen, Ham ; Vainio, O.

Author_Institution

Signal Process. Lab., Tampere Univ. of Technol., Finland

fYear

1999

fDate

1999

Firstpage

138

Lastpage

142

Abstract

A low-voltage, multibit, fourth-order sigma-delta modulator circuit for wideband applications is implemented using a 0.35 μm CMOS technology. The high-speed operation is achieved utilizing pipelining in the modulator architecture, well optimized complementary folded cascode feedforward compensated OTAs, and specific clocking strategies. The low-voltage operation is achieved by using proper circuit structures and optimized component sizes. The size of the modulator is 1.3×1.0 mm ²

Keywords

CMOS integrated circuits; feedforward; high-speed integrated circuits; low-power electronics; operational amplifiers; pipeline processing; sigma-delta modulation; 0.35 micron; CMOS technology; circuit structures; clocking strategies; complementary folded cascode feedforward compensated OTAs; high-speed operation; low-voltage operation; modulator architecture; multibit sigma-delta modulator; optimized component sizes; pipelining; wideband applications; CMOS technology; Circuits; Clocks; Costs; Delta-sigma modulation; Digital filters; Dynamic range; Radio frequency; Voltage; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Design of Mixed-Mode Integrated Circuits and Applications, 1999. Third International Workshop on

Conference_Location

Puerto Vallarta

Print_ISBN

0-7803-5588-1

Type

conf

DOI

10.1109/MMICA.1999.833618

Filename

833618