An integrated fully-differential switched-current ladder filter

Author

Halonen, Kari ; Koli, Kimmo ; Wallinheimo, Jukka ; Kimppa, Harri

Author_Institution

Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland

Volume

5

fYear

1994

fDate

30 May-2 Jun 1994

Firstpage

313

Abstract

A fast fully-differential 6th order switched-current ladder filter with transmission zeros has been designed with a 1.2 um CMOS-process. The low-pass cut-off frequency of the filter is 630 kHz and it has a transmission zero at 950 kHz. The used clock frequency is 10 MHz. The filter is constructed with a novel fully-differential SI-integrator. The chip includes the voltage-to-current and the output current-to-voltage converters. The performance-of the SI-filter is compared with the equivalent SC-realization

Keywords

CMOS analogue integrated circuits; ladder filters; low-pass filters; switched current circuits; switched filters; zero assignment; 1.2 micron; 10 MHz; 630 kHz; 950 kHz; CMOS process; SI-integrator; integrated fully-differential switched-current ladder filter; low-pass cut-off frequency; output current-to-voltage converter; transmission zeros; voltage-to-current converter; Capacitors; Circuit synthesis; Clocks; Filtering theory; Filters; Frequency; Joining processes; Switches; Switching circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on

Conference_Location

London

Print_ISBN

0-7803-1915-X

Type

conf

DOI

10.1109/ISCAS.1994.409369

Filename

409369