The development of bipolar log domain filters in a standard CMOS process

Author

Duerden, Geoffrey D. ; Roberts, Gordon W. ; Deen, M Jamal

Author_Institution

Microelectron. & Comput. Syst. Lab., McGill Univ., Montreal, Que., Canada

Volume

1

fYear

2001

fDate

6-9 May 2001

Firstpage

145

Abstract

A design technique for implementing bipolar log domain filters in standard CMOS technology is proposed. The filters are constructed using lateral bipolar transistors and strongly-inverted MOSFET transistors. This paper presents a simple, SPICE compatible model for a lateral PNP transistor fabricated in 0.35 μ CMOS, and demonstrates that this device can be used to map bipolar circuit designs into a CMOS process. Simulations of a biquadratic low pass filter indicate that cutoff frequencies of over 10 MHz and dynamic ranges of the order of 50 dB can be achieved. Experimental measurements from a prototype filter demonstrate the feasibility of the approach

Keywords

BiCMOS analogue integrated circuits; SPICE; biquadratic filters; circuit simulation; continuous time filters; integrated circuit modelling; low-pass filters; 0.35 micron; SPICE compatible model; bipolar log domain filters; biquadratic low pass filter; cutoff frequencies; dynamic ranges; lateral bipolar transistors; standard CMOS process; strongly-inverted MOSFET transistors; Bipolar transistor circuits; Bipolar transistors; CMOS process; CMOS technology; Circuit synthesis; Low pass filters; MOSFET circuits; SPICE; Semiconductor device modeling; Standards development;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.921809

Filename

921809