A power efficient continuous time ΔΣ modulator with 15 MHz bandwidth and 70 dB dynamic range |
| |
Authors: | Karthikeyan Reddy Shanthi Pavan |
| |
Affiliation: | (1) GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan, China;(2) Electronics and Information Department, Wuhan University, 129 Luoyu Road, Wuhan, China; |
| |
Abstract: | A state variable block diagram method is given for the realization of universal biquadratic transfer functions employing second-generation
current-controlled conveyors (CCCIIs). Using minimum number of passive components and properly adjusting the bias currents
of CCCIIs, the proposed circuits can realize all the tunable frequency standard filter functions: high-pass, band-pass, low-pass,
notch-pass, and all-pass by choosing appropriate input branches without changing the passive elements. These presented circuits
are in current-mode and voltage-mode separately. The non-ideality analyses of these configurations are given. Additionally,
a high-order low-pass filter derived from the proposed voltage-mode biquadratic filter is introduced. PSPICE simulation results
are included to verify the theory. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|