A fully integrated CMOS PM radio receiver for wristwatch calibration

Author

Cathelin, Philippe ; Cathelin, Andreia ; Saboret, Xavier ; Krasnanski, Nicolas ; Legras, Pierre ; Moughabghab, Raëd V. ; Declerck, Olivier ; Miodini, Marc ; Eynde, Frank Op´t

Author_Institution

Info Technol., Gradignan, France

Volume

33

Issue

7

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1014

Lastpage

1022

Abstract

In this paper, a fully integrated phase modulation radio receiver ASIC is presented. The ASIC is a mixed analog and digital circuit, implemented in a 1.5-μm CMOS technology. The only required external components are the reception antenna and a 32-kHz crystal. The radio receiver is dedicated to the 162-kHz “Allouis” radio transmitter. In addition to the audio information, 40-bit/s digital data are transmitted as phase modulation of the main carrier. These digital data may contain “live” information, such as the exact time. The presented ASIC demodulates and decodes these digital data. The principal features of this radio receiver are a low voltage supply (2.2-4.5 V), low power consumption (less than 150 μA), a large sensitivity range (10 μV-100 mV), and a reduced number of external components. Thanks to all of these performances, the circuit can be built in a wristwatch

Keywords

CMOS integrated circuits; application specific integrated circuits; calibration; clocks; consumer electronics; mixed analogue-digital integrated circuits; phase modulation; radio receivers; 1.5 micron; 150 muA; 162 kHz; 2.2 to 4.5 V; 40 bit/s; Allouis radio transmitter; crystal; digital data demodulation; fully integrated CMOS phase modulation radio receiver ASIC; low-power low-voltage circuit; mixed analog digital circuit; reception antenna; time information; wristwatch calibration; Antenna accessories; Application specific integrated circuits; CMOS analog integrated circuits; CMOS digital integrated circuits; CMOS technology; Digital circuits; Integrated circuit technology; Phase modulation; Radio transmitters; Receivers;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.701246

Filename

701246