DocumentCode
2259085
Title
A 70dB SFDR CMOS transconductor
Author
Lopez-Martin, Antonio J. ; Carvajal, Ramon G. ; Ramirez-Angulo, Jaime
Author_Institution
Dept. of Electr. & Electron. Eng., Navarra Public Univ., Pamplona, Spain
Volume
2
fYear
2005
fDate
28 Aug.-2 Sept. 2005
Abstract
A CMOS transconductor suitable for very low distortion analog signal processing over a rail-to-rail input range is presented. Very low impedance virtual ground nodes obtained by local negative feedback allow a highly linear voltage to current conversion by passive resistors. Low mismatch sensitivity is achieved as the current generated in the resistors is not internally replicated. Measurement results for a 0.5μm CMOS prototype show a spurious-free dynamic range at 1MHz higher than 70dB for a 6Vpp input and a dual supply of ±1.5V.
Keywords
CMOS analogue integrated circuits; analogue processing circuits; 0.5 micron; 1 MHz; 6 V; CMOS transconductor; low distortion analog signal processing; mismatch sensitivity; passive resistor; rail-to-rail input range; virtual ground node; voltage-to-current conversion; CMOS process; Distortion measurement; Impedance; Negative feedback; Prototypes; Rail to rail inputs; Resistors; Signal processing; Transconductors; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN
0-7803-9066-0
Type
conf
DOI
10.1109/ECCTD.2005.1523030
Filename
1523030
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