A 2.7-V CMOS single-chip baseband processor for CT2/CT2+ cordless telephones

Citation
C. Crippa et al., A 2.7-V CMOS single-chip baseband processor for CT2/CT2+ cordless telephones, IEEE J SOLI, 34(2), 1999, pp. 170-181
Citations number
8
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE JOURNAL OF SOLID-STATE CIRCUITS
ISSN journal
00189200 → ACNP
Volume
34
Issue
2
Year of publication
1999
Pages
170 - 181
Database
ISI
SICI code
0018-9200(199902)34:2<170:A2CSBP>2.0.ZU;2-2
Abstract
A low-voltage, low-power CMOS single-chip baseband processor for CT2 and CT 2+ cordless telephones is presented, The chip integrates a complete voiceba nd codec, a tone generator, a G721 adaptive differential pulse code modulat ion coder/decoder, a burst-mode logic controller for CT2/CT2+ framings, and an I/Q baseband signal generator. The only external components are made of two quartz crystals. The chip is interfaced with standard microcontrollers through a parallel interface. With a 2.7-V minimum supply, it consumes normal and standby powers of 35 mW and 25 mu W, respectively. Maximum supply is 5.5 V, and temperature range is from -40 to 70 degrees C. Chip area (including scribe line) is 55.5 mm(2) in a 0.8-mu m N-well double -metal single-poly CMOS process with implanted capacitors.