Title :
An oversampling transconductance amplifier using sampled-data feedback
Author :
Itani, Nadi R. ; Sculley, Terry L.
Author_Institution :
Crystal Semicond. Corp., Austin, TX, USA
Abstract :
A transconductance amplifier based entirely on a first-order sampled-data feedback topology is designed, implemented, and characterized. The system uses only low linearity components and no conventional continuous-time feedback, with transconductance gain set by a capacitor value and clock period. The prototype integrated circuit was implemented in a 2 μm CMOS p-well process and yielded experimental linearity in excess of 67 dB, limited by the lack of more precise measurement capability
Keywords :
CMOS analogue integrated circuits; feedback amplifiers; sampled data circuits; switched capacitor networks; 2 micron; CMOS p-well process; first-order topology; integrated circuit; low linearity components; oversampling transconductance amplifier; sampled-data feedback; CMOS integrated circuits; CMOS process; Capacitors; Circuit topology; Clocks; Feedback; Integrated circuit yield; Linearity; Prototypes; Transconductance;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.539897
