A 110dB dynamic range continuous-time IF-to-baseband /spl Sigma//spl Delta/ modulator for AM/FM/IBOC receivers

Author

Silva, Paulo ; Makinwa, Kofi ; Huijsing, Johan ; Breems, Lucien

Author_Institution

DIMES, Delft Univ. of Technol.

fYear

2006

fDate

21-24 May 2006

Abstract

A single bit 5th order complex continuous-time sigma-delta IF-to-baseband modulator with integrated mixer and switched-capacitor (SC) feedback DAC for AM/FM/IBOC car radio receiver is presented. The input intermediate frequency (IF) is 10.7MHz and the sampling frequency is 41.7MHz. In AM mode (3kHz BW) the achieved dynamic range is 110dB. In FM mode (200 kHz BW) the achieved dynamic range is 90dB. For IBOC (in-band on-channel) reception the SFDR is greater than 70dB in a 500 kHz BW. The IM3 distance is 85dB and the IM2 distance is 90dB. This modulator is implemented in a IP 5M 0.18mum CMOS process with an active area of 3.6 mm². It consumes 190mW from a 1.8V supply

Keywords

CMOS integrated circuits; amplitude modulation; frequency modulation; radio receivers; sigma-delta modulation; switched capacitor networks; 0.18 micron; 1.8 V; 10.7 GHz; 190 mW; 200 kHz; 3 kHz; 41.7 MHz; 500 kHz; AM receivers; CMOS; FM receivers; IBOC receivers; SFDR; SigmaDelta modulator; car radio receiver; in-band on-channel; switched-capacitor feedback DAC; Analog-digital conversion; Bandwidth; Circuit topology; Digital signal processing; Dynamic range; Frequency modulation; Laboratories; Passive filters; Receivers; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1693607

Filename

1693607