Current-mode oscillators using single output current conveyors

1998 ◽  
Vol 29 (11) ◽  
pp. 907-912 ◽  
Author(s):  
Ahmed M. Soliman
Keyword(s):  
Current Mode ◽  
Current Conveyors ◽  
Output Current ◽  
Single Output

scholarly journals Simple Three-Input Single-Output Current-Mode Universal Filter Using Single VDCC

2018 ◽  
Vol 8 (6) ◽  
pp. 4932 ◽  
Author(s):  
Prungsak Uttaphut
Keyword(s):  
Tracking Error ◽  
Current Mode ◽  
Current Conveyors ◽  
Output Current ◽  
Current Output ◽  
Single Output ◽  
High Impedance ◽  
Low Pass ◽  
Generic Filter ◽  
Band Pass

This paper presents a second-order current-mode filter with three-inputs and single-output current using single voltage differencing current conveyors (VDCC) along with one resistor and two grounded capacitors. The design of presented filter emphasizes on the use of a single active element without the multiple terminals VDCC which is convenient to implement the VDCC using commercially available IC for the practical test. Also, it can reduce the current tracking error at current output port and can reduce the number of transistor in the VDCC. The proposed filter can realize all the five generic filter responses, namely, band-pass (BP), band-reject (BR), low-pass (LP), high-pass (HP), and all-pass (AP) functions from the same configuration under various conditions in terms of three input current signals. Furthermore, the natural frequency and quality factor are electronically controlled. The output current node exhibits high impedance. Besides, the non-ideal case is also investigated. The simulation and experimental results using VDCC constructed from commercially available IC can validate the theoretical analyses.

scholarly journals Programmable Input Mode Instrumentation Amplifier Using Multiple Output Current Conveyors

2017 ◽  
Vol 24 (1) ◽  
pp. 79-89
Author(s):  
Bogdan Pankiewicz
Keyword(s):  
Integrated Circuit ◽  
Current Mode ◽  
Cmos Technology ◽  
Instrumentation Amplifier ◽  
Current Conveyors ◽  
Output Current ◽  
Input Mode ◽  
Field Programmable ◽  
Transmission Gates ◽  
Analogue To Digital

Abstract In this paper a programmable input mode instrumentation amplifier (IA) utilising second generation, multiple output current conveyors and transmission gates is presented. Its main advantage is the ability to choose a voltage or current mode of inputs by setting the voltage of two configuration nodes. The presented IA is prepared as an integrated circuit block to be used alone or as a sub-block in a microcontroller or in a field programmable gate array (FPGA), which shall condition analogue signals to be next converted by an analogue-to-digital converter (ADC). IA is designed in AMS 0.35 µm CMOS technology and the power supply is 3.3 V; the power consumption is approximately 9.1 mW. A linear input range in the voltage mode reaches ± 1.68 V or ± 250 µA in current mode. A passband of the IA is above 11 MHz. The amplifier works in class A, so its current supply is almost constant and does not cause noise disturbing nearby working precision analogue circuits.

scholarly journals Versatile Tunable Current-Mode Universal Biquadratic Filter Using MO-DVCCs and MOSFET-Based Electronic Resistors

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Hua-Pin Chen
Keyword(s):  
Current Mode ◽  
Angular Frequency ◽  
Input Current ◽  
Current Conveyors ◽  
Output Impedance ◽  
Output Circuit ◽  
Single Output ◽  
Biquadratic Filter ◽  
High Output Impedance ◽  
High Output

This paper presents a versatile tunable current-mode universal biquadratic filter with four-input and three-output employing only two multioutput differential voltage current conveyors (MO-DVCCs), two grounded capacitors, and a well-known method for replacement of three grounded resistors by MOSFET-based electronic resistors. The proposed configuration exhibits high-output impedance which is important for easy cascading in the current-mode operations. The proposed circuit can be used as either a two-input three-output circuit or a three-input single-output circuit. In the operation of two-input three-output circuit, the bandpass, highpass, and bandreject filtering responses can be realized simultaneously while the allpass filtering response can be easily obtained by connecting appropriated output current directly without using additional stages. In the operation of three-input single-output circuit, all five generic filtering functions can be easily realized by selecting different three-input current signals. The filter permits orthogonal controllability of the quality factor and resonance angular frequency, and no inverting-type input current signals are imposed. All the passive and active sensitivities are low. Postlayout simulations were carried out to verify the functionality of the design.

scholarly journals New Universal One-Input Five-Output Current-Mode Filter Using Current-Conveyors

1995 ◽  
Vol 18 (3) ◽  
pp. 171-177 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Aamir Alam Farooqui
Keyword(s):  
Current Mode ◽  
Current Conveyors ◽  
Output Current ◽  
Biquadratic Filter ◽  
Single Input

A new universal active current-mode filter with single input and five outputs is presented. The proposed filter avoids the use of feedback in any part of the circuit and uses only grounded resistors and grounded capacitors. The proposed circuit can simultaneously realize lowpass, highpass, bandpass, allpass, and notch biquadratic filter functions.

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