A CMOS 750MHz fifth-order continuous-time linear phase lowpass filter with gain boost

Author

Zhu, Xi ; Sun, Yichuang ; Moritz, James

Author_Institution

Sch. of EC&EE, Univ. of Hertfordshire, Hatfield

fYear

2008

fDate

18-21 May 2008

Firstpage

900

Lastpage

903

Abstract

The design and implementation of a CMOS continuous-time multiple loop feedback (MLF) leap frog (LF) filter is described. The filter is implemented using a fully-differential linear, low voltage operational transconductance amplifier (OTA). PSpice simulations using a standard TSMC 0.18 mum CMOS process with 1.8 V power supply have shown that the cut-off frequency of the filter ranges from 455 MHz to 780 MHz and dynamic range is about 58 dB. The group delay is less than 5% over the whole tuning range; the maximum power consumption of the filter with gain boost is only 240 mW.

Keywords

CMOS integrated circuits; SPICE; low-pass filters; operational amplifiers; power consumption; CMOS process; frequency 455 MHz to 780 MHz; gain boost; group delay; leap frog filter; linear phase lowpass filter; multiple loop feedback; operational transconductance amplifier; power 240 mW; CMOS process; Cutoff frequency; Delay; Dynamic range; Feedback loop; Low voltage; Nonlinear filters; Operational amplifiers; Power supplies; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

978-1-4244-1683-7

Electronic_ISBN

978-1-4244-1684-4

Type

conf

DOI

10.1109/ISCAS.2008.4541564

Filename

4541564