DocumentCode
2525541
Title
A 90nm-CMOS 1.8mW 87dB-SNR 3rd order analog filter for GSM receivers
Author
De Matteis, M. ; Amico, S.D. ; Delizia, P. ; Baschirotto, A. ; Azeredo-Leme, C. ; Tavares, A.
Author_Institution
Dep. of Innovation Eng., Univ. of Salento, Lecce
fYear
2008
fDate
June 22 2008-April 25 2008
Firstpage
173
Lastpage
176
Abstract
A 3rd order continuous time low pass filter for a GSM Receiver is presented. The filter uses the cascade of two active RC cells. The cut-off frequency deviation due to the technological spread, aging and temperature variation is adjusted by an on-chip tuning circuit. Fine definition (based on filter quality factor sensitivity functions) of the opamp frequency response and thermal/flicker noise optimization provides accurate filter transfer function. No miller cap tuning is needed, saving area and linearity. The device in 90 nm CMOS technology consumes 1.8 mW, features 87dB-SNR and 48 muVrms in-band integrated noise. The supply voltage is 1.2 V. The filter has been designed using an automatic Matlab design procedure which is validated by the agreement between the simulation results and the expected performance.
Keywords
CMOS analogue integrated circuits; RC circuits; low-pass filters; receivers; CMOS; GSM receivers; RC cells; analog filter; automatic Matlab design; cut-off frequency; filter transfer function; low pass filter; opamp frequency; power 1.8 mW; size 90 nm; voltage 1.2 V; 1f noise; Aging; CMOS technology; Circuit optimization; Cutoff frequency; Frequency response; GSM; Low pass filters; Q factor; Temperature sensors; Analog filter; Cut-off frequency Tuning; GSM;
fLanguage
English
Publisher
ieee
Conference_Titel
Research in Microelectronics and Electronics, 2008. PRIME 2008. Ph.D.
Conference_Location
Istanbul
Print_ISBN
978-1-4244-1983-8
Electronic_ISBN
978-1-4244-1984-5
Type
conf
DOI
10.1109/RME.2008.4595753
Filename
4595753
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