Modified current differencing transconductance amplifier – new versatile active element

Malcher, Andrzej

doi:10.2478/v10175-012-0085-7

Cited by 6 publications

(8 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, output resistance r O and gate-source capacitance C GS can be expressed as [10]: (7,8) where λ is channel length modulation parameter. Using above parameters and additionally assuming ideal input current source and ideal short-circuit load to the signal ground, one can evaluate small-signal parameters as: -input resistance for low frequencies equal to:…”

Section: Small-signal Analysis Of Core Cellmentioning

confidence: 99%

“…Current amplifiers can be used to build current mode circuits such as filters and biquad sections [4][5][6][7][8][9]. As an examplary application, a bandpass biquad section is presented in Fig.…”

Section: Bandpass Biquad Sectionmentioning

confidence: 99%

“…Power consumption of the filter is the same as in the amplifier. Higher order filters and other current mode circuits can be implemented by cascading presented biquad or using known synthesis techniques [4][5][6][7][8][9][10].…”

Section: Bandpass Biquad Sectionmentioning

confidence: 99%

“…Current conveyors, current mirrors, and current followers have received much attention during recent years of electronics development [1][2][3][4][5][6][7][8][9]. Current mode amplifiers are often used in filtering applications [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Multiple output CMOS current amplifier

Pankiewicz¹

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

View full text Add to dashboard Cite

Abstract. In this paper the multiple output current amplifier basic cell is proposed. The triple output current mirror and current follower circuit are described in detail. The cell consists of a split nMOS differential pair and accompanying biasing current sources. It is suitable for low voltage operation and exhibits highly linear DC response. Through cell devices scaling, not only unity, but also any current gains are achievable. As examples, a current amplifier and bandpass biquad section designed in CMOS TSMC 90nm technology are presented. The current amplifier is powered from a 1.2V supply. MOS transistors scaling was chosen to obtain output gains equal to -2, 1 and 2. Simulated real gains are -1.941, 0.966 and 1.932 respectively. The 3dB passband obtained is above 20MHz, while current consumption is independent of input and output currents and is only 7.77µA. The bandpass biquad section utilises the previously presented amplifier, two capacitors and one resistor, and has a Q factor equal to 4 and pole frequency equal to 100 kHz.Key words: current amplifier, current follower, current mirror, CMOS technology. Multiple output CMOS current amplifier Core of current amplifier circuitProposed current mirror/follower is based on nMOS differential pair and is presented in Fig. 1

show abstract

Section: Small-signal Analysis Of Core Cellmentioning

confidence: 99%

Section: Bandpass Biquad Sectionmentioning

confidence: 99%

Section: Bandpass Biquad Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Multiple output CMOS current amplifier

Pankiewicz¹

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

View full text Add to dashboard Cite

show abstract

“…The second problem is requirement of many passive elements, see for example [3], [41], [43]. Only solutions in [21] and [23] are offering the same or even better features than circuits in Fig. 2 -Fig.…”

Section: Proposed Solutions Versus State-of-the-artmentioning

confidence: 99%

Resistor-Less Single-Purpose or Reconfigurable Biquads Utilizing Single z-Copy Controlled-Gain Voltage Differencing Current Conveyor

Jeřábek

Šotner

Polák

et al. 2016

J CIRCUIT SYST COMP

View full text Add to dashboard Cite

Presented work deals with applications of the single [Formula: see text]-copy controlled-gain voltage differencing current conveyor (ZC-CG-VDCC) in single purpose and multifunctional biquadratic voltage- and current-mode active resistor-less filters. Electronically adjustable features of the active device (intrinsic current input resistance [Formula: see text], current gain [Formula: see text] and transconductance [Formula: see text]) are controlled by DC bias current. These mentioned adjustable features allow interesting possibilities of control of the pole frequency and quality factor. Four voltage-mode solutions realizing low-pass, band-pass, high-pass and band-reject filtering solutions were designed together with two current-mode filters. The current-mode solutions have curious multifunctional capability based on full utilization of electronically controllable parameters of the ZC-CG-VDCC. Two adjustable parameters of the ZC-CG-VDCC (intrinsic current input resistance and transconductance) are used for electronic setting of features of the filter (pole frequency, quality factor, tuning). Control of the third adjustable parameter (current gain) causes reconnection-less change of the transfer function between iAP (inverting all-pass response) and iBR (inverting band-reject responses). Simulation results in PSPICE and Cadence CDS 6 are used to show characteristics of the proposed circuits.

show abstract

Design and implementation of CDTA: a review

Bisariya

Afzal

2020

Sādhanā

View full text Add to dashboard Cite

Modified current differencing transconductance amplifier – new versatile active element

Cited by 6 publications

References 12 publications

Multiple output CMOS current amplifier

Multiple output CMOS current amplifier

Resistor-Less Single-Purpose or Reconfigurable Biquads Utilizing Single z-Copy Controlled-Gain Voltage Differencing Current Conveyor

Design and implementation of CDTA: a review

Contact Info

Product

Resources

About