Publication detail

Single-CDTA (Current Differencing Transconductance Amplifier) Current-Mode Biquad Revisited

BIOLEK, D. BIOLKOVÁ, V. KOLKA, Z.

Original Title

Single-CDTA (Current Differencing Transconductance Amplifier) Current-Mode Biquad Revisited

English Title

Single-CDTA (Current Differencing Transconductance Amplifier) Current-Mode Biquad Revisited

Type

journal article - other

Language

en

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.

English 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

RIV year

2009

Released

01.01.2009

Publisher

WSEAS

Location

Řecko

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",
  annote="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.",
  address="WSEAS",
  chapter="48580",
  institution="WSEAS",
  journal="WSEAS Transactions on Electronics",
  number="6",
  volume="5",
  year="2009",
  month="january",
  pages="250--256",
  publisher="WSEAS",
  type="journal article - other"
}