A 3rd-Order 235MHz Low-Pass gmC-Filter in 120nm CMOS

Author

Kolm, Robert ; Zimmermann, Horst

Author_Institution

Inst. of Electr. Meas. & Circuit Design, Vienna Univ. of Technol.

fYear

2006

fDate

19-21 Sept. 2006

Firstpage

215

Lastpage

218

Abstract

A 3rd-order continuous-time filter with a cut-off frequency of 235MHz in 120nm CMOS is presented. A linearization technique of an operational transconductance amplifier (OTA) is proposed. The gain of this filter is digitally programmable between 0.5dB and -5dB. The third-harmonic distortion of this filter is -49dB in maximum gain for a 400mV peak-to-peak differential output signal. Two identical filters were implemented on one chip to measure the mismatch which is lower than 0.7 dB in amplitude and 7deg in phase

Keywords

CMOS integrated circuits; harmonic distortion; linearisation techniques; low-pass filters; operational amplifiers; 120 nm; 235 MHz; CMOS integrated circuit; OTA; continuous-time filter; gmC-filter; linearization technique; low-pass filter; operational transconductance amplifier; third-harmonic distortion; Circuit synthesis; Digital filters; Electric variables measurement; Frequency measurement; Linearity; Linearization techniques; Power supplies; Resistors; Virtual reality; Voltage;

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.2006.307569

Filename

4099742

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3491093