Analogue Current Mode Circuits

1989 ◽  
Vol 26 (3) ◽  
pp. 206-223 ◽  
Author(s):  
B. Wilson
Keyword(s):  
Current Mode ◽  
Building Blocks ◽  
Current Conveyors ◽  
Current Mode Circuits ◽  
Voltage Mode ◽  
Current Mirrors

Circuits designed to use current as the active parameter can often outperform by a significant margin the more traditional voltage mode formulations. Many wideband circuit functions and new design opportunities are available by using current mirrors and current conveyors as basic building blocks.

BODE-TYPE EQUALIZERS USING CURRENT CONVEYORS

2009 ◽  
Vol 18 (03) ◽  
pp. 433-442 ◽  
Author(s):  
AHMED M. SOLIMAN
Keyword(s):  
Operational Amplifier ◽  
Current Mode ◽  
Current Conveyors ◽  
Spice Simulation ◽  
Voltage Mode ◽  
Type Variable ◽  
Simulation Results

New voltage mode and current mode active RC Bode-type variable equalizers using current conveyors are introduced. The proposed equalizers can operate at much higher frequencies than the classical operational amplifier-based variable equalizers. Spice simulation results are included to confirm the practicality of the proposed circuits.

ANALOGUE SIGNAL PROCESSING: THE “CURRENT” WAY OF THINKING

1992 ◽  
Vol 03 (03n04) ◽  
pp. 297-336 ◽  
Author(s):  
CHRISTOFER TOUMAZOU
Keyword(s):  
Signal Processing ◽  
Current Mode ◽  
Building Blocks ◽  
Low Noise ◽  
Active Filters ◽  
Current Conveyors ◽  
Process Technology ◽  
Current Feedback ◽  
Noise Current ◽  
Analogue Signal

This paper presents a tutorial review of the current-mode approach to analogue electronic circuit design, in particular some of the author’s own research over the past decade covering the development of a new generation of technology specific current-mode analogue signal processing. In this paper various technologies are represented with key current-mode building blocks ranging from current-conveyors, current-feedback operational amplifiers, linear transconductance amplifiers to applications ranging from current-mode active filters to low-noise current-mode optical preamplifiers. Advantages, future trends and perspectives of the current-mode approach are highlighted throughout the paper. The theoretical basis for many of the examples dates back many years but it is only recently due to advances in process technology that many of these techniques have now become a practical reality.

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.

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
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