A low-sensitivity programmable BJT current-mode filtering technique

1999 ◽  
Vol 46 (9) ◽  
pp. 1131-1134
Author(s):  
C. Mathiazhagan
Keyword(s):  
Current Mode ◽  
Filtering Technique ◽  
Low Sensitivity

Derivation of low-sensitivity current-mode CCII-based filters

2001 ◽  
Vol 148 (3) ◽  
pp. 115 ◽  
Author(s):  
S. Özoğuz ◽  
C. Acar ◽  
A. Toker ◽  
E.O. Güneş
Keyword(s):  
Current Mode ◽  
Low Sensitivity

scholarly journals VM and CM Universal Filters Based on Single DVCCTA

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Neeta Pandey ◽  
Sajal K. Paul
Keyword(s):  
Building Block ◽  
Current Mode ◽  
Cmos Technology ◽  
Current Conveyor ◽  
Spice Simulation ◽  
Transconductance Amplifier ◽  
Low Sensitivity ◽  
Differential Voltage Current Conveyor ◽  
A Current ◽  
Sensitivity Performance

A universal voltage-mode filter (VM) and a current-mode filter (CM) based on recently proposed active building block, namely, differential voltage current conveyor transconductance amplifier (DVCCTA) are proposed. Both the circuits use a single DVCCTA, two capacitors, and a single resistor. The filters enjoy low-sensitivity performance and low component spread and exhibit electronic tunability of filter parameters via bias currents of DVCCTA. SPICE simulation using 0.25 μm TSMC CMOS technology parameters is included to show the workability of the proposed circuits.

scholarly journals Thermal neutron intensity measurement with fission chamber in current, pulse and Campbell modes

2020 ◽  
Vol 231 ◽  
pp. 05009
Author(s):  
Shakir Zeinalov ◽  
Olga Sidorova ◽  
Pavel Sedyshev ◽  
Valery Shvetsov ◽  
Youngseok Lee ◽  
...  
Keyword(s):  
Neutron Flux ◽  
Thermal Neutron ◽  
Thermal Neutron Flux ◽  
Current Mode ◽  
Fission Chamber ◽  
Design Changes ◽  
Digital Pulse ◽  
Wide Range ◽  
Low Sensitivity ◽  
Digital Pulse Processing

In thermal nuclear reactors, most of the power is generated by thermal neutron induced fission. Therefore, fission chambers with targets that respond directly to slow neutrons are of great interest for thermal neutron flux measurements due to relatively low sensitivity to gamma radiation. However, the extreme conditions associated with experiments at very low cross section demand highly possible thermal neutron flux, leading often to substantial design changes. In this paper we report design of a fission chamber for wide range (from 10 to 1012 n/cm2 sec) measurement of thermal neutron flux. Test experiments were performed at the first beam of IBR2 pulsed reactor using digital pulse processing (DPP) technique with modern waveform digitizers (WFD). The neutron pulses detected by the fission chamber in each burst (5 Hz repetition rate) of the reactor were digitized and recorded to PC memory for further on-line and off-line analysis. New method is suggested to make link between the pulse counting, the current mode and the Campbell technique.

HIGH-ORDER MULTIPLE-MODE AND TRANSADMITTANCE-MODE OTA-C UNIVERSAL FILTERS

2012 ◽  
Vol 21 (05) ◽  
pp. 1250048 ◽  
Author(s):  
CHEN-NONG LEE
Keyword(s):  
Current Mode ◽  
High Order ◽  
Point Of View ◽  
Chip Area ◽  
Operational Transconductance Amplifiers ◽  
Filter Structure ◽  
Multiple Mode ◽  
Input Signals ◽  
Theoretical Predictions ◽  
Low Sensitivity

This paper presents two new high-order OTA-C universal filters. The first proposed filter structure employs n + 3 operational transconductance amplifiers (OTAs) and n grounded capacitors, which can realize nth-order multiple-mode (including voltage, current, transadmittance, and transimpedance modes) universal filtering responses (lowpass, highpass, bandpass, bandreject, and allpass) from the same topology. Since the OTA has high input and output impedances, it is very suitable for transadmittance-mode circuit applications. Therefore, a new high-order transadmittance-mode OTA-C universal filter structure using the minimum components is introduced. The second proposed filter structure uses only n + 1 OTAs and n grounded capacitors, which are the minimum components necessary for realizing nth-order transadmittance-mode universal filtering responses (lowpass, highpass, bandpass, bandreject, and allpass) from the same topology. This represents the attractive feature from chip area and power consumption point of view. Moreover, the two new OTA-C universal filters still enjoy many important advantages: no need of extra inverting or double-type amplifiers for special input signals, using only n grounded capacitors, no need of any resistors, cascadably connecting the former voltage-mode stage and the latter current-mode stage, and low sensitivity performance. H-Spice simulations with TSMC 0.35 μm process and ±1.65 V supply voltages are included and confirm the theoretical predictions.

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 Current Mode Biquad Filter with Minimum Component Count

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Bhartendu Chaturvedi ◽  
Sudhanshu Maheshwari
Keyword(s):  
Current Mode ◽  
Pass Band ◽  
Current Sensing ◽  
Pass Filter ◽  
Biquad Filter ◽  
Low Pass ◽  
Biquadratic Filter ◽  
Band Pass ◽  
Low Sensitivity ◽  
Differential Voltage Current Conveyor

The paper presents a new current mode biquadratic filter with one input and three outputs using differential voltage current conveyor (DVCC) and four passive components. The proposed circuit can simultaneously realize low-pass, band-pass, and high-pass filter functions without changing the circuit topology and passive elements. The circuit exhibits a good frequency performance and low-sensitivity figures. PSPICE simulation using 0.5 μm CMOS parameters are given to validate the proposed circuit. The circuit provides a simple yet novel solution to the current-mode filtering after appropriate incorporation of current sensing elements in form of current buffers.

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