A 1.5 Hz- 15 Hz single ended, fully integrated low pass filter for MEMS interfacing

Author

Bruschi, Paolo ; Nizza, Nicolò ; Pieri, Francesco ; Schipani, Monica

Author_Institution

Dipt. di Ingegneria dell´´Informazione, Universita di Pisa

fYear

2006

fDate

Sept. 2006

Firstpage

332

Lastpage

335

Abstract

A second order, single ended, fully integrated low pans filter with cut-off frequency tunable in the range 1.5-15 Hz is presented. The filter is based on a recently proposed CMOS transconductor topology, combining G_m values of the order of a few nS with large input ranges and suitability to single-ended filter architectures. The circuit has been designed and fabricated using 3.3 V-0.35 mum CMOS devices from the STMicroelectronics bipolar-CMOS-DMOS process BCD6. The tested prototype occupies a 960 times 350 mum² area and requires a supply current ranging from 50 to 500 muA, depending on tuning. A dynamic range in excess of 60 dB has been estimated from experimental measurements

Keywords

CMOS integrated circuits; integrated circuit design; low-pass filters; microsensors; 0.35 micron; 1.5 to 15 Hz; 3.3 V; 350 micron; 50 to 500 muA; 960 micron; CMOS transconductor topology; MEMS interface; circuit design; low pass filter; single-ended filter architectures; CMOS process; Circuit testing; Circuit topology; Current supplies; Cutoff frequency; Low pass filters; Micromechanical devices; Prototypes; Transconductors; Tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 2006. ESSCIRC 2006. Proceedings of the 32nd European

Conference_Location

Montreux

ISSN

1930-8833

Print_ISBN

1-4244-0303-0

Type

conf

DOI

10.1109/ESSCIR.2006.307598

Filename

4099771