A Novel Current-Mode Instrumentation Amplifier Based on Operational Floating Current Conveyor

2005 ◽  
Vol 54 (5) ◽  
pp. 1941-1949 ◽  
Author(s):  
Y.H. Ghallab ◽  
W. Badawy ◽  
K.V.I.S. Kaler ◽  
B.J. Maundy
Keyword(s):  
Current Mode ◽  
Current Conveyor ◽  
Instrumentation Amplifier ◽  
Operational Floating Current Conveyor

scholarly journals CMOS Operational Floating Current Conveyor Circuit for Instrumentation Amplifier Application

2020 ◽  
pp. 317-323
Author(s):  
Fahmi Elsayed ◽  
◽  
Mostafa Rashdan ◽  
Mohammad Salman
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Current Conveyor ◽  
Total Power ◽  
Low Power Consumption ◽  
Instrumentation Amplifier ◽  
Fully Integrated ◽  
Total Power Consumption ◽  
High Bandwidth ◽  
Operational Floating Current Conveyor

This paper presents a fully integrated CMOS Operational Floating Current Conveyor (OFCC) circuit. The proposed circuit is designed for instrumentation amplifier circuits. The CMOS OFCC circuit is designed and simulated using Cadence in TSMC 90 m technology kit. The circuit aims at two different design goals. The first goal is to design a low power consumption circuit (LBW design) while the second is to design a high bandwidth circuit (HBW design). The total power consumption of the LBW design is 1.26 mW with 30 MHz bandwidth while the power consumption of the HBW design is 3 mW with 104.6 MHz bandwidth.

scholarly journals Single-Input Four-Output Current Mode Filter Using Operational Floating Current Conveyor

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Neeta Pandey ◽  
Deva Nand ◽  
Zubair Khan
Keyword(s):  
Process Model ◽  
Current Mode ◽  
Current Conveyor ◽  
Cmos Process ◽  
Output Current ◽  
Single Input ◽  
Low Sensitivity ◽  
Operational Floating Current Conveyor ◽  
Sensitivity Performance

This paper presents operational floating current conveyor (OFCC) based single input four output current mode filter. It employs only three OFCCs and two grounded capacitors and resistors each. The MOS based grounded resistors implementation is used, which adds feature of electronic tunability to the filter parameters. The filter also enjoys low component spread and low sensitivity performance. The effect of finite transimpedance and parasites of OFCC on the proposed circuit is also analyzed. The functionality of the proposed circuit is demonstrated through SPICE simulations using 0.5 µm CMOS process model provided by MOSIS (AGILENT).

scholarly journals A Novel Fully Differential Second Generation Current Conveyor and Its Application as a Very High CMRR Instrumentation Amplifier

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Soma Ahmadi ◽  
Seyed Javad Azhari
Keyword(s):  
Second Generation ◽  
Current Mode ◽  
Cmos Technology ◽  
Current Conveyor ◽  
Instrumentation Amplifier ◽  
Intrinsic Resistance ◽  
Common Mode ◽  
Fully Differential ◽  
High Cmrr ◽  
Very High

This paper aims to introduce a novel Fully Differential second generation Current Conveyor (FDCCII) and its application to design a novel Low Power (LP), very high CMRR, and wide bandwidth (BW) Current Mode Instrumentation Amplifier (CMIA). In the proposed application, CMRR, as the most important feature, has been greatly improved by using both common mode feed forward (CMFF) and common mode feedback (CMFB) techniques, which are verified by a perfect circuit analysis. As another unique quality, it neither needs well-matched active blocks nor matched resistors but inherently improves CMRR, BW, and power consumption hence gains an excellent matchless choice for integration. The FDCCII has been designed using 0.18 um TSMC CMOS Technology with ±1.2 V supply voltages. The simulation of the proposed FDCCII and CMIA have been done in HSPICE LEVEL 49. Simulation results for the proposed CMIA are as follow: Voltage CMRR of 216 dB, voltage CMRR BW of 300 Hz. Intrinsic resistance of X-terminals is only 45 Ω and the power dissipation is 383.4 μW.  Most favourably, it shows a constant differential voltage gain BW of 18.1 MHz for variable gains (here ranging from 0 dB to 45.7 dB for example) removing the bottleneck of constant gain-BW product of Voltage mode circuits.

scholarly journals A New Proposal for OFCC-based Instrumentation Amplifier

2017 ◽  
Vol 7 (1) ◽  
pp. 134 ◽  
Author(s):  
Deva Nand ◽  
Neeta Pandey
Keyword(s):  
Tracking Error ◽  
Current Conveyor ◽  
Experimental Results ◽  
Instrumentation Amplifier ◽  
Voltage Mode ◽  
Second Stage ◽  
Voltage Difference ◽  
High Impedance ◽  
Operational Floating Current Conveyor ◽  
Two Stages

This contribution puts forward a new voltage mode instrumentation amplifier (VMIA) based on operational floating current conveyor (OFCC). It presents high impedance at input terminals and provides output at low impedance making the proposal ideal for voltage mode operation. The proposed VMIA architecture has two stages - the first stage comprises of two OFCCs to sense input voltages and coverts the voltage difference to current while the second stage has single OFCC that converts the current to voltage. In addition it employs two resistors to provide gain and imposes no condition on the values of resistors.  The behavior of the proposed structure is also analyzed for OFCC non idealities namely finite transimpedance and tracking error. The proposal is verified through SPICE simulations using CMOS based schematic of OFCC. Experimental results, by bread boarding it using commercially available IC AD844, are also included.

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