scholarly journals Current Controlled Differential Difference Current Conveyor Transconductance Amplifier and Its Application as Wave Active Filter

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Neeta Pandey ◽  
Praveen Kumar ◽  
Jaya Choudhary
Keyword(s):  
Signal Processing ◽  
Cutoff Frequency ◽  
Cmos Technology ◽  
Bias Current ◽  
Active Filter ◽  
Current Conveyor ◽  
Third Order ◽  
Transconductance Amplifier ◽  
Wave Filter ◽  
Order Butterworth Filter

This paper proposes current controlled differential difference current conveyor transconductance amplifier (CCDDCCTA), a new active building block for analog signal processing. The functionality of the proposed block is verified via SPICE simulations using 0.25 μm TSMC CMOS technology parameters. The usefulness of the proposed element is demonstrated through an application, namely, wave filter. The CCDDCCTA-based wave equivalents are developed which use grounded capacitors and do not employ any resistors. The flexibility of terminal characteristics is utilized to suggest an alternate wave equivalents realization scheme which results in compact realization of wave filter. The feasibility of CCDDCCTA-based wave active filter is confirmed through simulation of a third-order Butterworth filter. The filter cutoff frequency can be tuned electronically via bias current.

scholarly journals Differential Difference Current Conveyor Transconductance Amplifier: A New Analog Building Block for Signal Processing

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Neeta Pandey ◽  
Sajal K. Paul
Keyword(s):  
Signal Processing ◽  
Building Block ◽  
Current Mode ◽  
Cmos Technology ◽  
Current Conveyor ◽  
Pspice Simulations ◽  
Transconductance Amplifier ◽  
Multifunction Filter ◽  
And Performance ◽  
A Current

A new active building block for analog signal processing, namely, differential difference current conveyor transconductance amplifier (DDCCTA), is presented, and performance is checked through PSPICE simulations which show the usability of the proposed element is up to 201 MHz. The proposed block is implemented using 0.25 μm TSMC CMOS technology. Some of the applications are presented using the proposed DDCCTA, namely, a voltage mode multifunction filter, a current mode universal filter, an oscillator, current and voltage amplifiers, and grounded inductor simulator. The feasibility of DDCCTA and its applications is confirmed via PSPICE simulations.

scholarly journals Ultra-Low-Voltage Low-Power Bulk-Driven Quasi-Floating-Gate Operational Transconductance Amplifier

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Ziad Alsibai ◽  
Salma Bay Abo Dabbous
Keyword(s):  
Signal Processing ◽  
Power Consumption ◽  
Low Power ◽  
Low Voltage ◽  
Supply Voltage ◽  
Cmos Technology ◽  
Bias Current ◽  
Floating Gate ◽  
Operational Transconductance Amplifier ◽  
Transconductance Amplifier

A new ultra-low-voltage (LV) low-power (LP) bulk-driven quasi-floating-gate (BD-QFG) operational transconductance amplifier (OTA) is presented in this paper. The proposed circuit is designed using 0.18 μm CMOS technology. A supply voltage of ±0.3 V and a quiescent bias current of 5 μA are used. The PSpice simulation result shows that the power consumption of the proposed BD-QFG OTA is 13.4 μW. Thus, the circuit is suitable for low-power applications. In order to confirm that the proposed BD-QFG OTA can be used in analog signal processing, a BD-QFG OTA-based diodeless precision rectifier is designed as an example application. This rectifier employs only two BD-QFG OTAs and consumes only 26.8 μW.

Current Mode and Voltage Mode Third Order Sinusoidal Oscillator Using CCDDCCTA

2020 ◽  
Vol 10 (4) ◽  
pp. 486-492
Author(s):  
Ajay K. Kushwaha ◽  
Ashok Kumar ◽  
Prakash Pareek
Keyword(s):  
Output Voltage ◽  
Current Mode ◽  
Monte Carlo Analysis ◽  
Bias Current ◽  
Current Conveyor ◽  
Output Current ◽  
Third Order ◽  
Transconductance Amplifier ◽  
Sinusoidal Oscillator ◽  
Circuit Configuration

Objective: In this paper, a novel third order sinusoidal oscillator based on current controlled differential difference current conveyor transconductance amplifier (CCDDCCTA) is proposed. Methods: The proposed circuit configuration consist of single CCDDCCTA, two grounded resistor and three capacitors. It can concurrently yield output voltage and current. The amplitude of output current can be easily tuned by the bias current. The non-ideality and Monte-Carlo analysis are discussed and presented. Results: The stated results agree well with the theoretical estimation. Conclusion: The performance ofa proposed oscillator are analyzed with ORCAD 16.6 simulator and the analog block has been depicted using 0.25 μm CMOS TSMC technology parameters.

scholarly journals VM and CM Universal Filters Based on Single DVCCTA

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Neeta Pandey ◽  
Sajal K. Paul
Keyword(s):  
Building Block ◽  
Current Mode ◽  
Cmos Technology ◽  
Current Conveyor ◽  
Spice Simulation ◽  
Transconductance Amplifier ◽  
Low Sensitivity ◽  
Differential Voltage Current Conveyor ◽  
A Current ◽  
Sensitivity Performance

A universal voltage-mode filter (VM) and a current-mode filter (CM) based on recently proposed active building block, namely, differential voltage current conveyor transconductance amplifier (DVCCTA) are proposed. Both the circuits use a single DVCCTA, two capacitors, and a single resistor. The filters enjoy low-sensitivity performance and low component spread and exhibit electronic tunability of filter parameters via bias currents of DVCCTA. SPICE simulation using 0.25 μm TSMC CMOS technology parameters is included to show the workability of the proposed circuits.

A Novel CMOS CCCII with Wide Tunable Rx and Its Application

2018 ◽  
Vol 27 (13) ◽  
pp. 1850198 ◽  
Author(s):  
Cuirong Zhu ◽  
Chunhua Wang ◽  
Hua Chen ◽  
Xin Zhang ◽  
Jingru Sun ◽  
...  
Keyword(s):  
Tuning Range ◽  
Cmos Technology ◽  
Bias Current ◽  
Current Conveyor ◽  
Universal Filter ◽  
Intrinsic Resistance ◽  
External Bias ◽  
Simulation Results ◽  
First Time ◽  
Reconfigurable Structure

This paper introduces a novel CMOS second-generation current-controlled current conveyor (CCCII) that has a wide tunable intrinsic resistance ([Formula: see text]. The designed structure is achieved by the combination of one ordinary CCCII, one cross-coupled OTA and one active resistor. An inverse relationship between the intrinsic resistance and external bias current is created for the first time in CMOS CCCII design, which results in wide tuning range of [Formula: see text]. Performance of the proposed circuit is discussed by detailed analysis. The CMOS CCCII is simulated in TSMC 0.18[Formula: see text][Formula: see text]m RF CMOS technology. The simulation results confirm that the proposed CMOS CCCII achieves a wide tunable [Formula: see text] (from 197.4[Formula: see text][Formula: see text] to 27.23[Formula: see text]k[Formula: see text]) while maintaining favorable performance in bandwidth, transfer gain and linear range. In addition, a new reconfigurable structure, which can function as a universal filter or a quadrature oscillator via controlling an enabled switch, is given as an application example to validate the feasibility of the proposed CMOS CCCII.

Arbitrary Waveform Generators Using Current-Controlled Current Conveyor Transconductance Amplifier and Current Conveyor Analog Switches

2019 ◽  
Vol 28 (11) ◽  
pp. 1950179
Author(s):  
Montree Kumngern ◽  
Thanat Nonthaputha ◽  
Fabian Khateb
Keyword(s):  
Amplitude Modulation ◽  
High Frequency ◽  
Bias Current ◽  
Current Conveyor ◽  
Phase Shift Keying ◽  
Information Signal ◽  
Transconductance Amplifier ◽  
Shift Keying ◽  
Simulation Results ◽  
Arbitrary Waveform

This paper presents a new amplitude modulation (AM), frequency modulation (FM), amplitude shift keying (ASK), frequency shift keying (FSK), phase shift keying (PSK) and quadrature amplitude modulation (QAM) waveform generators using current current-controlled conveyor transconductance amplifier (CCCTA) and current conveyor analog switches (CCASs). The CCCTA around with capacitors and resistors are used to generate high-frequency carrier which is worked as a quadrature oscillator. The oscillating frequency of oscillator can be controlled using the bias current of CCCTA, therefore FM and FSK waveforms can be obtained by applying information signal through the bias current of CCCTA. Unlike previous waveform generators, proposed circuit uses second generation current conveyor (CCII) to work as CCAS and AM, ASK, PSK and QAM waveforms can be obtained by putting information signals to control switches that realized using CCIIs. The proposed circuit has been simulated using 0.18[Formula: see text][Formula: see text]m CMOS [Formula: see text]-well process from TSMC. The simulation results are used to confirm workability of the proposed circuit.

scholarly journals High-Precision Current Conveyor based on BDQFG Miller Ota

2019 ◽  
Vol 8 (2) ◽  
pp. 823-826
Keyword(s):  
Frequency Response ◽  
Supply Voltage ◽  
Cmos Technology ◽  
Current Conveyor ◽  
Floating Gate ◽  
High Current ◽  
Operational Transconductance Amplifier ◽  
Transconductance Amplifier ◽  
High Bandwidth ◽  
Low Supply Voltage

The paper presents a sub-volt design of highly precise second-generation current conveyor (CCII  ) using Miller compensated Operational Transconductance Amplifier (OTA) designed using bulk driven quasi-floating gate (BDQFG) MOSFET. The bulk-driven approach help in working of proposed CCII  at low supply voltage. Moreover, followed BDQFG technique results in improves the transconductance and frequency response of the circuit over standalone bulk-driven technique. The proposed CCII  operates at  0.4V. Other performances which encourage its wide applicability are in terms of high current range and high bandwidth. The analysis of proposed current conveyor is carried in 0.18 m twin-well CMOS technology using HSpice

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