A new monolithic variable capacitor

Citation
E. Despain et J. Choma, A new monolithic variable capacitor, ANALOG IN C, 26(2), 2001, pp. 89-102
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING
ISSN journal
0925-1030 → ACNP
Volume
26
Issue
2
Year of publication
2001
Pages
89 - 102
Database
ISI
SICI code
0925-1030(200102)26:2<89:ANMVC>2.0.ZU;2-K
Abstract
A method of realizing monolithic variable linear circuit elements is presen ted. The method exploits monolithic variable gain amplifiers to modify the values of passive integrated devices. The technique described herein realiz es floating true two-terminal variable elements. A theoretical analysis of a variable capacitance cell is performed as a prelude to a practical design producing capacitances in the range of 4 pF to 30 pF. The results of theor etical analyses are compared to SPICE [1] simulations of the subject cell, prototype circuit results are presented, and performance limitations are di scussed.