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BIOLEK, D. BIOLKOVÁ, V. KOLKA, Z.
Original Title
Single-CDTA (Current Differencing Transconductance Amplifier) Current-Mode Biquad Revisited
Type
journal article - other
Language
English
Original Abstract
This paper presents a current-mode (CM) second-order filter, employing one so-called "Z Copy - Current Differencing Transconductance Amplifier" (ZC-CDTA), two grounded capacitors, and one virtually grounded resistor. The filter provides two current outputs of low-pass (LP) and band-pass (BP) types for driving independent loads, and one high-pass (HP) current output, flowing through one of the working capacitors. Other implementations of various types of transfer functions are proposed by means of commonly used methods of input/output current summing. Their critical analysis is accomplished from the point of view of tracking errors and dynamic range optimization. Results of the PSpice simulation, which utilizes the CDTA model on the level of CMOS transistor structure, are enclosed.
Keywords
CDTA, PSpice, Current-Mode filters
Authors
BIOLEK, D.; BIOLKOVÁ, V.; KOLKA, Z.
RIV year
2009
Released
1. 1. 2009
Publisher
WSEAS
Location
Řecko
ISBN
1109-9445
Periodical
WSEAS Transactions on Electronics
Year of study
5
Number
6
State
United States of America
Pages from
250
Pages to
256
Pages count
7
BibTex
@article{BUT48580, author="Dalibor {Biolek} and Viera {Biolková} and Zdeněk {Kolka}", title="Single-CDTA (Current Differencing Transconductance Amplifier) Current-Mode Biquad Revisited", journal="WSEAS Transactions on Electronics", year="2009", volume="5", number="6", pages="250--256", issn="1109-9445" }