Generalised operational floating current conveyor based instrumentation amplifier

2016 ◽  
Vol 10 (3) ◽  
pp. 209-219 ◽  
Author(s):  
Neeta Pandey ◽  
Deva Nand ◽  
Rajeshwari Pandey
Keyword(s):  
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 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.

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 High CMRR Voltage Mode Instrumentation Amplifier Using a New CMOS Differential Difference Current Conveyor Realization

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Dynamic Range ◽  
Supply Voltage ◽  
Current Source ◽  
Low Noise ◽  
Current Conveyor ◽  
Instrumentation Amplifier ◽  
Wide Bandwidth ◽  
Voltage Mode ◽  
Constant Bias ◽  
Adaptive Biasing

This paper describes a new CMOS realization of differential difference current conveyor circuit. The proposed design offers enhanced characteristics compared to DDCC circuits previously exhibited in the literature. It is characterized by a wide dynamic range with good accuracy thanks to use of adaptive biasing circuit instead of a constant bias current source as well as a wide bandwidth (560 MHz) and a low parasitic resistance at terminal X about 6.86 Ω. A voltage mode instrumentation amplifier circuit (VMIA) composed of a DDCC circuit and two active grounded resistances is shown as application. The proposed VMIA circuit is intended for high frequency applications. This configuration offers significant improvement in accuracy as compared to the state of the art. It is characterized by a controllable gain, a large dynamic range with THD less than 0.27 %, a low noise density (22 nV/Hz1/2) with a power consumption about 0.492 mW and a wide bandwidth nearly 83 MHz. All proposed circuits are simulated by TSPICE using CMOS 0.18 μm TSMC technology with ± 0.8 V supply voltage to verify the theoretical results.

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