Realisation of exponential V-I converter using composite NMOS transistors

Authors
Liu, WS Chang, CC Liu, SI
Citation
Ws. Liu et al., Realisation of exponential V-I converter using composite NMOS transistors, ELECTR LETT, 36(1), 2000, pp. 8-10
Citations number
5
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ELECTRONICS LETTERS
ISSN journal
00135194 → ACNP
Volume
36
Issue
1
Year of publication
2000
Pages
8 - 10
Database
ISI
SICI code
0013-5194(20000106)36:1<8:ROEVCU>2.0.ZU;2-N
Abstract
A CMOS voltage-to-current converter with exponential characteristics is pre sented. The Taylor's series expansion is used for realising the exponential function. In a 0.35 mu m CMOS process, the HSPICE simulation results show a 15dB linear range with a linearity error of < +/-0.5dB. The total power c onsumption is < 0.8mW with +/-1.5V supply voltage. The circuit can be used in the design of a Variable gain amplifier (VGA).