A multi-mode ΣΔ analog-to-digital converter for GSM, UMTS and WLAN

Author

Xotta, Andrea ; Gerosa, Andrea ; Neviani, Andrea

Author_Institution

Dept. of Inf. Eng., Univ. of Padova, Italy

fYear

2005

fDate

23-26 May 2005

Firstpage

2551

Abstract

The paper presents a multi-mode analog-to-digital converter suited for wireless receivers that can handle GSM, UMTS and WLAN standards. The converter is based on a cascaded ΣΔ architecture, whose wide range of programmability of input frequency and dynamic range descends from modulator order programmability. The converter is fully integrated in a low-cost technology, i.e. a 0.35 μm standard CMOS. Extensive system and transistor level simulations prove a dynamic range of 94 dB, 79 dB and 68 dB in GSM, UMTS and WLAN modes respectively, while the worst case power consumption is 128 mW.

Keywords

3G mobile communication; CMOS integrated circuits; cellular radio; circuit simulation; integrated circuit design; integrated circuit modelling; mixed analogue-digital integrated circuits; radio receivers; sigma-delta modulation; wireless LAN; 0.35 micron; 128 mW; ADC design; CMOS; GSM; UMTS; WLAN; cascaded sigma-delta architecture; dynamic range; modulator order programmability; multimode ΣΔ analog-to-digital converter; multimode sigma-delta analog-to-digital converter; power consumption; wireless receivers; 3G mobile communication; Analog-digital conversion; CMOS technology; Dynamic range; Frequency conversion; GSM; Integrated circuit technology; Modulation coding; Sampling methods; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

Print_ISBN

0-7803-8834-8

Type

conf

DOI

10.1109/ISCAS.2005.1465146

Filename

1465146