A design strategy for VHF filters with digital programmability

Author

Otin, A. ; Celma, S. ; Aldea, C.

Author_Institution

Group of Electron. Design, Zaragoza Univ.

fYear

2006

fDate

21-24 May 2006

Lastpage

1062

Abstract

In this paper we report 2nd and 3rd-order G_m-C filters based on fully-balanced pseudo-differential continuous-time transconductors for applications in low-voltage systems over the VHF range. By using a 0.35 mum standard CMOS process, low-pass filter approximations have been implemented with a cut-off frequency programmability over the 40-200 MHz range, which confirm the feasibility of the proposed strategy in applications such as data storage systems and IF strips. The filters consume less than 4.8 mW per pole at 45 MHz from a 2V supply. The measured dynamic range was better than 53 dB at THD of 1% for all filters. The maximum active chip area is 0.025 mm² per pole

Keywords

CMOS integrated circuits; VHF filters; continuous time filters; current-mode circuits; low-pass filters; CMOS process; VHF filters; digital programmability; low-pass filters; pseudo-differential continuous-time transconductors; CMOS process; CMOS technology; Digital filters; Dynamic range; Electronic mail; Frequency; Low pass filters; Power supplies; Topology; Transconductors;

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.2006.1692771

Filename

1692771