Current-Mode Instrumentation Amplifiers Using Current Conveyors

2018 ◽  
pp. 59-69
Author(s):  
Leila Safari ◽  
Giuseppe Ferri ◽  
Shahram Minaei ◽  
Vincenzo Stornelli
Keyword(s):  
Current Mode ◽  
Current Conveyors

THREE-INPUTS-ONE-OUTPUT CURRENT-MODE UNIVERSAL BIQUAD USING TWO CURRENT CONVEYORS

2013 ◽  
Vol 22 (09) ◽  
pp. 1340001 ◽  
Author(s):  
JIUN-WEI HORNG ◽  
TO-YAO CHIU ◽  
CHING-PAO HSIAO ◽  
GUANG-TING HUANG
Keyword(s):  
Integrated Circuit ◽  
Current Mode ◽  
Current Conveyors ◽  
Output Terminal ◽  
Biquadratic Filter ◽  
Component Matching ◽  
High Output Impedance ◽  
Very High ◽  
A Current ◽  
High Output

A current-mode universal biquadratic filter with three input terminals and one output terminal is presented. The architecture uses two current conveyors (CCs), two grounded capacitors and two grounded resistors; and can realize all standard second-order filter functions — highpass, bandpass, lowpass, notch and allpass. Moreover, the circuit still offers the following advantage features: very low active and passive sensitivities, using of grounded capacitors and resistors which is ideal for integrated circuit implementation, without requirements for critical component matching conditions and very high output impedance. The workability of the proposed circuit has been verified via HSPICE simulations using TSMC 0.18 μm, level 49 MOSFET technology.

scholarly journals A Current-Mode TransImpedance Amplifier for Capacitive Sensors

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1033
Author(s):  
Alessandro Nastro ◽  
Andrea De Marcellis ◽  
Marco Ferrari ◽  
Vittorio Ferrari
Keyword(s):  
Current Mode ◽  
Cmos Technology ◽  
Detection Sensitivity ◽  
Transimpedance Amplifier ◽  
Current Conveyors ◽  
Interface Circuit ◽  
Linear Behavior ◽  
Board Level ◽  
Voltage Conversion ◽  
A Current

A Current-Mode (CM) TransImpedance Amplifier (TIA) based on Second Generation Current Conveyors (CCIIs) for capacitive microsensor measurements is presented. The designed electronic interface performs a capacitance-to-voltage conversion using 3 CCIIs and 3 resistors exploiting a synchronous-demodulation technique to improve the overall detection sensitivity and resolution of the system. A CM-TIA solution designed at transistor level in AMS0.35 µm integrated CMOS technology with a power consumption lower than 900 µW is proposed. Experimental results obtained with a board-level prototype show linear behavior of the proposed interface circuit with a resolution up to 34.5 fF and a sensitivity up to 223 mV/nF, confirming the theoretical expectations.

Developments in Current-Mode Signal Rectifier and Modulator Circuits

1998 ◽  
Vol 35 (2) ◽  
pp. 175-187
Author(s):  
B. Wilson ◽  
A. J. Dodd
Keyword(s):  
Current Mode ◽  
Current Conveyors ◽  
Current Steering ◽  
Improved Performance

The improved performance in precision signal rectification that is now available through the use of current conveyors is outlined in this paper. Such current-steering techniques can also be adapted to produce novel ring- and chopper-modulators with promising intercept performance.

VERSATILE UNIVERSAL CURRENT-MODE AND TRANSRESISTANCE-MODE BIQUADRATIC FILTER USING TWO MOCCIIS AND GROUNDED PASSIVE COMPONENTS

2013 ◽  
Vol 22 (01) ◽  
pp. 1250077 ◽  
Author(s):  
CHEN-NONG LEE
Keyword(s):  
Current Mode ◽  
Current Conveyors ◽  
Passive Components ◽  
Current Output ◽  
Output Terminal ◽  
Biquad Filter ◽  
Voltage Output ◽  
Input Signals ◽  
Biquadratic Filter ◽  
High Output Impedance

This paper presents a versatile universal current-mode and transresistance-mode biquadratic filter using only two multiple outputs second-generation current conveyors (MOCCIIs), two grounded capacitors, and three grounded resistors. The proposed configuration can realize all five standard filtering functions from one current-output terminal and one voltage-output terminal, and also provide all these filtering functions from different current-output and voltage-output terminals without changing the filter topology. Moreover, the proposed biquad filter still achieves many advantages like the employment of all grounded passive components, and the minimum number of active component counts, in addition to having no need of inverting-type input signals or double-type input signals for the use of special input signals, high output impedance and low sensitivity performance. H-Spice simulation results confirm the theory.

scholarly journals Advanced Readout System IC Current Mode Semi-Gaussian Shapers Using CCIIs and OTAs

VLSI Design ◽  
2007 ◽  
Vol 2007 ◽  
pp. 1-12 ◽  
Author(s):  
Thomas Noulis ◽  
Constantinos Deradonis ◽  
Stylianos Siskos
Keyword(s):  
Selection Criteria ◽  
Dynamic Range ◽  
Filter Design ◽  
Harmonic Distortion ◽  
Current Mode ◽  
Current Conveyors ◽  
Readout System ◽  
Fully Integrated ◽  
Operational Transconductance Amplifiers ◽  
Transconductance Amplifiers

Novel CMOS current mode shapers for front-end electronics are proposed. In particular, six semi-Gaussian shaper implementations based on second generation current conveyors and operational transconductance amplifiers are designed using advanced filter design techniques. Although all shaper architectures are fully integrated, they satisfy a relatively large peaking time. The topologies are analytically compared in terms of noise performance, power consumption, total harmonic distortion (THD), and dynamic range (DR) in order to examine which is the most preferable in readout applications. Design technique selection criteria are proposed in relation to the shaper structures performance. Analysis is supported by simulations results using SPICE in a 0.6 μm process by Austria Mikro Systeme (AMS).

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.

New electronically tunable current-mode universal biquad filter using translinear current conveyors

2010 ◽  
Vol 97 (5) ◽  
pp. 511-523 ◽  
Author(s):  
Montree Kumngern ◽  
Wirote Jongchanachavawat ◽  
Kobchai Dejhan
Keyword(s):  
Current Mode ◽  
Current Conveyors ◽  
Biquad Filter ◽  
Electronically Tunable
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