scholarly journals Programmable CF-OTA-Based Lowpass and Bandpass Filters

1995 ◽  
Vol 18 (4) ◽  
pp. 267-272
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Azhar Quddus
Keyword(s):  
Low Temperature ◽  
Input Impedance ◽  
Bandpass Filter ◽  
Attractive Feature ◽  
Operational Transconductance Amplifier ◽  
High Input ◽  
High Input Impedance ◽  
Transconductance Amplifier ◽  
Current Follower ◽  
Simulation Results

A new circuit is proposed for realizing lowpass and bandpass filter responses. The circuit uses one current-follower and one operational transconductance amplifier. The circuit enjoys low temperature sensitivities, high input impedance and its important parameters are electronically programmable. The use of grounded capacitors is an additional attractive feature for integration. Simulation results confirming the theory presented are included.

LOW POWER CONTINUOUS TIME COMMON MODE SENSING FOR COMMON MODE FEEDBACK CIRCUITS

2010 ◽  
Vol 19 (03) ◽  
pp. 519-528 ◽  
Author(s):  
M. PRAMOD ◽  
T. LAXMINIDHI
Keyword(s):  
Continuous Time ◽  
Input Impedance ◽  
Cmos Process ◽  
High Input ◽  
High Input Impedance ◽  
Common Mode ◽  
Standby Power ◽  
Low Distortion ◽  
Simulation Results ◽  
Feedback Circuits

Continuous common mode feedback (CMFB) circuits having high input impedance and low distortion are proposed. The proposed circuits are characterized for 0.18 μm CMOS process with 1.8 V supply. Simulation results indicate that the proposed common mode detector consumes no standby power and CMFB circuit consumes 27–34% less power than previous high swing CMFB circuits.

A New CCII Based Voltage-Mode Multifunctional Filter with Reduced Number of Active and Passive Elements

2015 ◽  
Vol 24 (04) ◽  
pp. 1550047 ◽  
Author(s):  
Firat Yucel ◽  
Erkan Yuce
Keyword(s):  
Time Domain ◽  
Input Impedance ◽  
Current Conveyors ◽  
High Input ◽  
High Input Impedance ◽  
Voltage Mode ◽  
Low Pass ◽  
Band Pass ◽  
Simulation Results ◽  
High Pass

In this paper, a new voltage-mode (VM) multifunctional filter comprising two second-generation current conveyors (CCIIs) is proposed. The proposed filter with one input and three outputs is also composed of three resistors and two grounded capacitors. The proposed filter has high input impedance; thus, it can be easily connected with other VM circuits. The proposed filter can simultaneously provide low-pass (LP), band-pass (BP) and high-pass (HP) responses. A number of time domain and frequency domain simulation results are included to confirm the claimed theory.

NEW HIGH INPUT IMPEDANCE VOLTAGE-MODE LOWPASS, BANDPASS AND HIGHPASS FILTER USING CURRENT FEEDBACK AMPLIFIERS

2005 ◽  
Vol 14 (06) ◽  
pp. 1037-1043 ◽  
Author(s):  
NISAR AHMAD SHAH ◽  
MOHD AMIN MALIK
Keyword(s):  
Resonance Frequency ◽  
Input Impedance ◽  
Theoretical Calculations ◽  
High Input ◽  
High Input Impedance ◽  
Current Feedback ◽  
Cascade Connection ◽  
Highpass Filter ◽  
Simulation Results ◽  
Passive Sensitivity

A new high input impedance filter employing three current feedback amplifiers (CFAs) and six passive elements, three of them are grounded, is presented. The proposed circuit offers the following advantages: simultaneous realization of lowpass (LP), bandpass (BP) and highpass (HP) filtering functions, employs two grounded capacitors, exhibits high input and low output impedances which permits easy cascade connection, low passive sensitivity figures and orthogonal control of resonance frequency (ωo) and bandwidth (ωo/Q). PSPICE simulation results are given to verify the theoretical calculations.

scholarly journals Additional High Input Low Output Impedance Analog Networks

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Sudhanshu Maheshwari ◽  
Bhartendu Chaturvedi
Keyword(s):  
Sensitivity Analysis ◽  
Input Impedance ◽  
Second Order ◽  
Current Conveyor ◽  
Output Impedance ◽  
High Input ◽  
High Input Impedance ◽  
Pspice Simulations ◽  
Voltage Mode ◽  
Good Agreement

This paper presents some additional high input low output impedance analog networks realized using a recently introduced single Dual-X Current Conveyor with buffered output. The new circuits encompass several all-pass sections of first- and second-order. The voltage-mode proposals benefit from high input impedance and low output impedance. Nonideality and sensitivity analysis is also performed. The circuit performances are depicted through PSPICE simulations, which show good agreement with theory.

The single CCII biquads with high-input impedance

1991 ◽  
Vol 38 (4) ◽  
pp. 456-461 ◽  
Author(s):  
Shen-Iuan Liu ◽  
Hen-Wai Tsao
Keyword(s):  
Input Impedance ◽  
High Input ◽  
High Input Impedance

scholarly journals Gm-Realization of Controlled-Gain Current Follower Transconductance Amplifier

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Worapong Tangsrirat
Keyword(s):  
Current Mode ◽  
Cmos Technology ◽  
Current Transfer ◽  
Biquad Filter ◽  
Transconductance Amplifier ◽  
Current Follower ◽  
Dc Bias ◽  
Simulation Results ◽  
Supply Voltages ◽  
A Current

This paper describes the conception of the current follower transconductance amplifier (CFTA) with electronically and linearly current tunable. The newly modified element is realized based on the use of transconductance cells (Gms) as core circuits. The advantage of this element is that the current transfer ratios (iz/ipandix/iz) can be tuned electronically and linearly by adjusting external DC bias currents. The circuit is designed and analyzed in 0.35 μm TSMC CMOS technology. Simulation results for the circuit with ±1.25 V supply voltages show that it consumes only 0.43 mw quiescent power with 70 MHz bandwidth. As an application example, a current-mode KHN biquad filter is designed and simulated.

High Input Impedance All-Pass Circuit

1994 ◽  
Vol 40 (2-3) ◽  
pp. 127-128
Author(s):  
N A Shah ◽  
N A Tantray
Keyword(s):  
Input Impedance ◽  
High Input ◽  
High Input Impedance
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