Highly Linear MOS Current Division Techniques for Programmable Gain Amplifiers

Author

Sanz, M. Teresa ; Celma, Santiago ; Calvo, Belén

Author_Institution

Fac. de Ciencias, Univ. de Zaragoza

fYear

2006

fDate

26-28 April 2006

Firstpage

95

Lastpage

100

Abstract

Two highly linear, digitally programmable gain amplifiers (PGAs) are presented in this paper and compared in terms of linearity, frequency, area and power consumption. Both structures are characterized by their inherently high linearity and wide gain tuning range. Low distortion is achieved by means of an inherently linear MOST-only current division technique. A 3-bit prototype with constant bandwidth was integrated for each approach in a 0.35mum CMOS process with 2.5V supply voltage. Experimental results prove the high linearity of both configurations, which present distortion levels better than -68dB for 1MHz and 1V_p-p output signals

Keywords

CMOS integrated circuits; amplifiers; distortion; programmable circuits; 0.35 micron; 1 MHz; 2.5 V; 3 bit; CMOS process; MOS current division techniques; distortion levels; highly linear current division techniques; inherently linear MOST; power consumption; programmable gain amplifiers; Bandwidth; CMOS process; Electronics packaging; Energy consumption; Frequency; Gain; High power amplifiers; Linearity; Prototypes; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Devices, Circuits and Systems, Proceedings of the 6th International Caribbean Conference on

Conference_Location

Playa del Carmen

Print_ISBN

1-4244-0041-4

Electronic_ISBN

1-4244-0042-2

Type

conf

DOI

10.1109/ICCDCS.2006.250843

Filename

4016872