scholarly journals Electronically and Orthogonally Tunable SITO Voltage-Mode Multifunction Biquad Filter Using LT1228s

2021 ◽  
Author(s):  
May Phu Pwint Wai ◽  
Peerawut Suwanjan ◽  
Winai Jaikla ◽  
Amornchai Chaichana
Keyword(s):  
Harmonic Distortion ◽  
Active Device ◽  
Voltage Mode ◽  
Biquad Filter ◽  
High Impedance ◽  
Transconductance Amplifier ◽  
Wide Range ◽  
Low Pass ◽  
Single Input ◽  
Quality Factor Q

The commercially available IC LT1228 is an interesting active device due to its advantage features, such as a fast transconductance amplifier, a wide bandwidth over a wide range of voltage gain, low total harmonic distortion (THD), high impedance differential input, etc. The single-input triple-output (SITO) voltage-mode (VM) multifunction biquadratic filters using ICs, LT1228s are introduced in this research. This circuit design provides the three-filtering functions, low-pass (LP), high-pass (HP), and band-pass (BP), without changing the circuit architecture. It comprises three LT1228s, four resistors, and two capacitors connected to the ground. The low impedance voltage output nodes are HP and BP responses. The quality factor (Q) and the pole frequency (ω0) can be electronically and orthogonally tuned by altering the third LT1228’s bias current (IB). The PSPICE simulation and the experiment are verified to describe the circuit operation.

Voltage-Mode Multifunctional Biquadratic Filter Using VDDDA

2015 ◽  
Vol 781 ◽  
pp. 155-159 ◽  
Author(s):  
Suriya Soisang ◽  
Kamon Jirasereemomkul ◽  
Winai Jaikla ◽  
Kohji Higuchi
Keyword(s):  
Quality Factors ◽  
Active Device ◽  
Voltage Mode ◽  
Input Multiple Output ◽  
Low Pass ◽  
Single Structure ◽  
Biquadratic Filter ◽  
Single Input ◽  
Band Pass ◽  
Good Agreement

This paper presents a new voltage-mode single-input multiple-output multifunctional biquadratic filter using voltage differencing differential difference amplifiers (VDDDA) with high-input impedance. It consists of two VDDDA, two resistors, and two grounded capacitors. It can synthesize basic filter functions: high-past (HP), low-pass (LP) and band-pass (BP), responding through only single structure. The natural frequency can obtain by adjusting bias currents of VDDDA without disturbing quality factors. Because of using VDDDA as an active device in the circuit, the power consumption was low. The simulation using PSPICE program indicated that circuit operation has good agreement with the theory.

scholarly journals One input voltage and three output voltage universal biquad filters with orthogonal tune of frequency and bandwidth

2021 ◽  
Vol 11 (4) ◽  
pp. 2962
Author(s):  
May Phu Pwint Wai ◽  
Amornchai Chaichana ◽  
Winai Jaikla ◽  
Surapong Siripongdee ◽  
Peerawut Suwanjan
Keyword(s):  
Output Voltage ◽  
Input Voltage ◽  
Electronic Control ◽  
Active Device ◽  
Voltage Mode ◽  
Biquad Filter ◽  
Low Pass ◽  
Band Pass ◽  
The One ◽  
High Pass

This research paper contributes the one input three output voltage mode universal biquad filters with linear and electronic control of the natural frequency (<em>w<sub>0</sub></em>), using two commercially available ICs, LT1228s as active device with two grounded capacitors, five resistors. The presented universal biquad filters can simultaneously provide three voltage-mode filtering functions, low-pass (LP), high-pass (HP) and band-pass (BP) without changing the circuit architecture. Furthermore, the first presented biquad filter provides low impedance at HP, BP voltage output nodes and LP, BP output voltage nodes are low impedance for the second proposed filter which is easy cascade ability with other voltage mode circuits without the employment of buffer circuits. The quality factor (<em>Q</em>) of both proposed filters is orthogonally adjusted from the passband voltage gain and <em>w<sub>0</sub></em>. The proposed filters are simulated and experimented with commercially accessible ICs, LT1228. The simulated and experimental results demonstrate the filtering performances.

VERSATILE VOLTAGE-MODE DDCC-BASED UNIVERSAL FILTER

2011 ◽  
Vol 20 (04) ◽  
pp. 681-696 ◽  
Author(s):  
HUA-PIN CHEN
Keyword(s):  
Angular Frequency ◽  
Pass Band ◽  
Current Conveyors ◽  
Voltage Mode ◽  
Input Signals ◽  
Low Pass ◽  
Single Input ◽  
Band Pass ◽  
Passive Sensitivity ◽  
Quality Factor Q

A novel versatile three-input five-output universal voltage-mode filter employing two differential difference current conveyors, two grounded capacitors and three resistors is proposed. The proposed configuration can be used as either a single-input five-output or three-input two-output. Unlike the previously reported works, it can simultaneously realize five different generic signals: low-pass, band-pass, high-pass, notch and all-pass. Moreover, the proposed circuit still offers the following advantages: (i) the employment of two grounded capacitors, (ii) no need to employ inverting-type input signals, (iii) no need to impose component choice, (iv) orthogonal control of the resonance angular frequency ωo and the quality factor Q and (v) low active and passive sensitivity performances.

A New Tune-Dependent Multiple-Gated Transistor Linearization Technique

2019 ◽  
Vol 29 (07) ◽  
pp. 2050103
Author(s):  
Farzan Rezaei
Keyword(s):  
Supply Voltage ◽  
Harmonic Distortion ◽  
Input Voltage ◽  
Third Order ◽  
Linearization Technique ◽  
Text Input ◽  
Transconductance Amplifier ◽  
Wide Range ◽  
Low Pass ◽  
Differential Pair

In this paper, a new multiple-gated transistor (MGTR) linearization technique is presented. To simultaneously keep linearity and tuning capability of proposed operational transconductance amplifier (OTA), the auxiliary transistors which are employed for [Formula: see text] cancellation of differential pair (DP) stage are body-driven through a tune-dependent voltage. By this way, the third-order nonlinearity of DP is reduced for a wide range of transconductance values from 5.1 to 35.6[Formula: see text][Formula: see text]A/V. The OTA works with 1.2[Formula: see text]V supply voltage and its power consumption changes between 137.4 and 156[Formula: see text][Formula: see text]W at the entire tuning range. For [Formula: see text][Formula: see text][Formula: see text]A/V ([Formula: see text][Formula: see text]V) and for 0.6[Formula: see text][Formula: see text] input voltage, the simulation results show 6[Formula: see text]dB reduction in the total harmonic distortion (THD) of proposed OTA when the MGTR linearization technique is used and 15[Formula: see text]dB reduction when the tune-dependent body driving is also utilized. The proposed OTA is employed in a third-order low-pass Butterworth filter which is tunable from 2 to 18[Formula: see text]MHz. The in-band IIP3 of filter is 16.9 and 12.4[Formula: see text]dBm, respectively, for 2 and 18[Formula: see text]MHz cutoff frequencies while the two-tone input voltage is applied at 1[Formula: see text]MHz.

scholarly journals Novel Cascadable Current Mode Translinear-C Universal Filter

2004 ◽  
Vol 27 (4) ◽  
pp. 215-218 ◽  
Author(s):  
Sudhanshu Maheshwari ◽  
Iqbal A. Khan
Keyword(s):  
Dynamic Range ◽  
Transfer Functions ◽  
Harmonic Distortion ◽  
Current Mode ◽  
Pass Band ◽  
Universal Filter ◽  
High Impedance ◽  
Low Pass ◽  
Single Input ◽  
Band Pass

A novel cascadable current-mode universal filter employing three current-controlled conveyors (translinear conveyors) and two grounded capacitors is proposed. The circuit with single input and three high-impedance current outputs, ideal for cascading, realizes low-pass, band-pass, and inverting band-reject transfer functions. Inverting high-pass and inverting all-pass transfer functions are obtained by simply connecting the available outputs. The proposed circuit enjoys tuning through external currents, low total harmonic distortion (THD), good dynamic range, attractive sensitivity performance and is ideal for IC implementation.

scholarly journals Single VDTA Based Dual Mode Single Input Multioutput Biquad Filter

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Rajeshwari Pandey ◽  
Neeta Pandey ◽  
Navin Singhal
Keyword(s):  
Current Mode ◽  
Angular Frequency ◽  
Cmos Process ◽  
Dual Mode ◽  
Biquad Filter ◽  
Transconductance Amplifier ◽  
Low Pass ◽  
Single Input ◽  
Band Pass ◽  
High Pass

This paper presents a dual mode, single input multioutput (SIMO) biquad filter configuration using single voltage differencing transconductance amplifier (VDTA), three capacitors, and a grounded resistor. The proposed topology can be used to synthesize low pass (LP), high pass (HP), and band pass (BP) filter functions. It can be configured as voltage mode (VM) or current mode (CM) structure with appropriate input excitation choice. The angular frequency (ω0) of the proposed structure can be controlled independently of quality factor (Q0). Workability of the proposed biquad configuration is demonstrated through PSPICE simulations using 0.18 μm TSMC CMOS process parameters.

scholarly journals Transadmittance Type Universal Current-Mode Biquad Filter Using VDTAs

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Dinesh Prasad ◽  
Mayank Srivastava ◽  
D. R. Bhaskar
Keyword(s):  
Process Parameters ◽  
Current Mode ◽  
Angular Frequency ◽  
Pspice Simulations ◽  
Biquad Filter ◽  
Low Pass ◽  
Single Input ◽  
Band Pass ◽  
Transconductance Amplifiers ◽  
High Pass

A new resistorless single-input-multi-output (SIMO) universal transadmittance (TA) type filter employing two voltage differencing transconductance amplifiers (VDTA) and two grounded capacitors is proposed. The proposed topology realizes simultaneously low pass (LP), high pass (HP), and band pass (BP) filter functions. Band rejects (BR) and all pass (AP) filters are also realizable through appropriate connections of currents. The proposed configuration also offers independent control of natural angular frequency (ω0) and bandwidth (BW) and low active and passive sensitivities. The workability of proposed configuration has been demonstrated through PSPICE simulations with TSMC CMOS 0.18 μm process parameters.

scholarly journals Electronically Tunable TISO Voltage-Mode Universal Filter Using Two LT1228s

2021 ◽  
Vol 12 (1) ◽  
pp. 62-74
Author(s):  
May Phu Pwint Wai ◽  
Winai Jaikla ◽  
Surapong Siripongdee ◽  
Amornchai Chaichana ◽  
Peerawut Suwanjan
Keyword(s):  
Integrated Circuits ◽  
Harmonic Distortion ◽  
Input Voltage ◽  
Angular Frequency ◽  
Pass Band ◽  
Universal Filter ◽  
Voltage Mode ◽  
Single Output ◽  
Low Pass ◽  
Electronically Tunable

This study aims to design an electronically tunable voltage-mode (VM) universal filter utilizing commercially available LT1228 integrated circuits (ICs) with three-input and single-output (TISO) configuration. With the procedure based on two integrator loop filtering structures, the proposed filter consists of two LT1228s, four resistors, and two grounded capacitors. It realizes five filter output responses: low-pass, all-pass, band-reject, band-pass, and high-pass functions. By selecting input voltage signals, each output responses can be achieved without changing the circuit architecture. The natural angular frequency can be controlled electronically. The input voltage nodes Vin1 and Vin3 possess high impedance. The output node has low impedance, so it can be cascaded to other circuits. The performance of the proposed filter is corroborated by PSpice simulation and hardware implementation which support the theoretical assumptions. The result shows that the range of total harmonic distortion (THD) is lower than 1%, and that the higher the temperature is, the lower the natural angular frequency is.

scholarly journals Programmable Voltage-Mode Multifunction Filter Using Two Current Conveyors and One Operational Transconductance Amplifier

1996 ◽  
Vol 19 (3) ◽  
pp. 133-138 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Azhar Quddus
Keyword(s):  
Low Temperature ◽  
Active Filter ◽  
Current Conveyors ◽  
Operational Transconductance Amplifier ◽  
Voltage Mode ◽  
Transconductance Amplifier ◽  
Biquadratic Filter ◽  
Multifunction Filter ◽  
Single Input

A new voltage-mode active-filter with single input and three outputs is presented. The parameters of the proposed filter are programmable and the filter uses grounded capacitors. The proposed circuit can simultaneously realize lowpass, highpass, and bandpass biquadratic filter functions and enjoys low temperature sensitivities.

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