fully differential CMOS filters

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CMOS-Electromechanical Systems Microsensor Resonator with High Q-Factor at Low Voltage

CMOS-Electromechanical Systems Microsensor Resonator with High Q-Factor at Low Voltage

and low-insertion-loss filters. The resonator with a center frequency at 7.1 MHz was fabricated using a standard 0.85 µm 3-poly-7-metal CMOS process, featuring low cost, batch production, fast turnaround time, easy prototyping, and MEMS/IC integration. To resolve the feedthrough issue often seen in conventional thermal-piezoresistive resonators: 1) separation of the heater and piezoresistor is first adopted because of the routing flexibility of the structural configuration offered by CMOS back-end-of-line materials and 5) fully differential measurement scheme is then applied to the proposed device, both of which enable a low- feedthrough level with 85-dB improvement as compared with its single-ended counterpart.
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Systematic Design of Fully Balanced Differential Current-Mode Multiple-Loop Feedback Filters Using CFBCCII

Systematic Design of Fully Balanced Differential Current-Mode Multiple-Loop Feedback Filters Using CFBCCII

circuit and an RC compensation circuit which keeps the common mode signal constant, while increasing the dynamic range of differential mode signals. In 2004, Alzaher introduced a CMOS fully differential current conveyor [22]. However, in all of these previously reported elements, there exists a relatively significant voltage tracking error from terminal Y to terminal X. The parasitic resistor in terminal X leads to transfer function error in their application circuits. Moreover, these elements lack electronic programmability, which has become a key feature in recent application.
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High Frequency CMOS Integrated Filters for Computer Hard Disk Drive and Wireless Communication Systems

High Frequency CMOS Integrated Filters for Computer Hard Disk Drive and Wireless Communication Systems

main drawback of both switching methods is the difficulty of avoiding parasitic effects due to CMOS switches in the signal path. With switched integration capacitors, the phase lead introduced by the switched on resistance tends to compensate for the finite Op-amp unity gain bandwidth product (GBW) and this effect may even be utilized to save power if the switch resistance is properly controlled. With resistors, a major concern is non-linear effects due to the switch, which has led to the practice of connecting the switches to the Op-amp input. If larger switches are used to achieve better linearity, this has the effect of adding capacitance to op-amp input and degrading the phase margin of the op-amp. Reconfigurable active blocks can be used to minimize analogue baseband power consumption, when reduced signal bandwidth is selected. Theoretically, the power consumption of an op-amp is reduced in proportion to its required GBW which is smaller for narrower bandwidths. The easiest way to accomplish GBW control is to simply change the bias current of operational amplifier [75, 81]. However, linearity and phase margins can be better optimized for different operating modes if input and output stage transistor dimensions are also changed [72]. Other techniques, such as the grounded amplifier and fully balanced differential difference amplifier (FBDDA) are also found in the literature [89]. References [83, 85] designed channel selection filters using a compensated one-pole Op-amp, similar to [84].A multi-standard baseband filter reported in [90] realizes integrators as a combination of current and voltage buffers. It achieves a very wide tuning range by using an R-2R network in place of input resistors, and digitally controlled current divider networks inside the current buffers which yield a total of 14 bits resolution for the frequency control. The performance of this filter is comparable to active-RC based filters. However, the internal current divider network in the current buffer makes it difficult to adjust the current consumption of filter, depending on the filter cut-off frequency.
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Design of Dynamic Comparators using Tanner EDA Tools

Design of Dynamic Comparators using Tanner EDA Tools

drawback related to the previous code dependent biased call. this will happen if there's some charge imbalance left from previous call at one in every of the nodes of the comparator which might have an effect on next call. to beat the drawbacks of the everyday differential combine comparator, a brand new dynamic comparator has been projected within the next section that addresses the on top of listed issues.

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CMOS Differential Amplifier

CMOS Differential Amplifier

The advantage of this configuration is that the differential output signal is converted to a single ended output signal with no extra components required. In this circuit, the output voltage or current is taken from the drains of M2 and M4. The operation of this circuit is as follows. If a differential voltage, V ID =V G1 -V G2 , is applied between the gates, then half is applied to the gate-source of M1 and half to the

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Performance Analysis of Fully Differential Double Tail Dynamic Comparator

Performance Analysis of Fully Differential Double Tail Dynamic Comparator

With two additional transistors inserted between output and input of the conventional dynamic comparator and converting into fully differential double tail dynamic comparator, which shows low propagation delay, with low offset voltage without any offset calibration techniques which requires more number of devices and calibration time more power hungry design strategies with optimum power and higher clock rate with the similar area, was implemented.

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Reliability of High Speed Ultra Low Voltage Differential CMOS Logic

Reliability of High Speed Ultra Low Voltage Differential CMOS Logic

quite much, the differential ULV gate has not shown any signs of malfunction. The differential ULV gate has, as Figure 15 illustrates, been simulated with an input voltage transition which is attenuated 80% and still are able to output correctly and also to a very good stability. The main affect an attenuation would imply is the increase in delay, i.e. the more an input signal is attenuated the higher the evaluation delay would become. Furthermore, the attenuation is also a function of the relation to the capacitive ratio seen at the semi-floating-gates. The ro- bustness to a large attenuation for the differential ULV gate should be credited to the keeper function. The kee- per transistor would help to turn off the right transistor as long as there is a small change in the output. Actually, as long as the two differentiated output are shifting in the opposite direction from each other from the equili- brium state, the representative keeper transistors would help the output drivers to symmetrically pull their repre- sentative outputs to the rails. Therefore, the ULV gate which does not have the keeper function is not expected to sustain a corner situation where the recharge level is shifted and thus generating an attenuation of more than 30%. Furthermore, it is important to stress that the keeper function also provides high stability under any circums- tances in terms of deviation from the rails.
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Design of a Programmable Low Drop-Out Regulator using CMOS Technology

Design of a Programmable Low Drop-Out Regulator using CMOS Technology

CMOS linear regulators are widely used in battery-powered portable electronics devices as their low drop-out and low supply current characteristics found more advantageous in the world of electronics. The dropout voltage of a regulator is defined as that value of differential voltage at which regulation provided by the control loop stops. The regulator is a device that adjusts a voltage divider network to maintain a constant output voltage, and continually dissipates the difference between the input and regulated voltages as waste heat. The low drop-out nature of the regulator makes it appropriate for use in many applications namely automotive, portable, industrial, and medical applications. LDO regulators enable battery to be used up to the certain limit, and therefore the regulators are now essential power management ICs for the devices like mobile phones, digital cameras, and laptop PCs to have long battery life. Also Low quiescent current flow is important in portable products where the total current drain determines battery life.
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An Approach to Design a New Multifunctional Reversible Logic Gate (MRLG)

An Approach to Design a New Multifunctional Reversible Logic Gate (MRLG)

In this paper approach to design of new reversible logic 4x4 Multifunctional Reversible Logic Gate. Circuits are implemented in transistor level with different design techniques Pass transistor logics (PT) and CMOS. And compare their performance by different supply voltage 1.5 to 4 V (1.5V, 2V, 3V, 4V). In this paper Conclude that the design of a multifunctional reversible gate for a reversible digital designs that can be minimizing the power consumption, delay, garbage outputs and quantum cost. After that, we observe a different property of the reversible MRLG gate in compare to the other alternative reversible gate. MRLG can design sixteen Boolean logical operations. Fig.7. Shows the sixteen Boolean operations and clear that in this case there in no garbage.
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Coupled Plasmonic Systems and Devices: Applications in Visible Metamaterials, Nanophotonic Circuits, and CMOS Imaging

Coupled Plasmonic Systems and Devices: Applications in Visible Metamaterials, Nanophotonic Circuits, and CMOS Imaging

Negative-index materials were first predicted theoretically by Veselago [136] in 1968, but it was only in the late 1990s that Pendry [104] defined NIM designs suitable for experimental realization. In these resonant-element based NIMs, the unusual ‘left handed’ behaviour of light originates from subwavelength resonant elements that be- have like ‘artificial atoms’ with engineered diamagnetic resonances that are the source of the materials’ negative-index response. As such, NIMs were first demonstrated ex- perimentally with arrays of millimetre-size copper strips and split-ring resonators operating at microwave frequencies [104, 121]. This discovery sparked a considerable effort to scale down the size of the constituent resonant components to enable opera- tion at higher frequencies. As a result, micrometre-size structures have been success- fully fabricated to produce negative refractive indices at terahertz frequencies. More recently, NIMs have been fabricated to operate in the near-infrared spectral region. However, for operation at optical frequencies, the required size of sub wavelength scatterers is very close to practical fabrication limits. So far, the highest reported operational frequency of NIMs has been demonstrated at the deep-red side of the vis- ible spectrum (λ 0 = 780 nm), using fishnet structures with features as small as 8 nm
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epidemiological parameters) to the malaria model simulated by 9 fully nonlinear ordinary nonlinear ordinary nonlinear ordinary nonlinear ordinary differential equations differential [r]

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Fully non-linear parabolic differential equations of second order

Fully non-linear parabolic differential equations of second order

The estimates to be proved are of three types; a maximum principle similar to the Aleksandrov-Bakelman Max1mum Pr1nc1ple for subsolutions of linear equations, a local max1mum principle s[r]

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Diepenbruck, Sabine
  

(2017):


	The potential impact of Wnt5a on differentiation and phenotype of dendritic cells found in renal cell carcinoma.


Dissertation, LMU München: Medizinische Fakultät

Diepenbruck, Sabine (2017): The potential impact of Wnt5a on differentiation and phenotype of dendritic cells found in renal cell carcinoma. Dissertation, LMU München: Medizinische Fakultät

Although, Shiina et al. and Kruck et al. detected increased levels of canonical Fzd- receptors and Wnt-ligands, these findings could not be verified in our gene array analysis performed on RCC samples. In addition, no differential expression of β-Catenin and only slight variations in other genes linked to canonical Wnt signalling were observed. Possible reasons for these deviations from the published literature include differing sample acquisition, tumour stages and other factors associated with protocol differences. Noteworthy, was the strong up regulation of RAC2, which showed a positive correlation with progressive tumour grading. RAC2 is a small Rho-like GTPase and part of the Wnt PCP pathway. It is involved in cytoskeletal rearrangement by regulating cell adhesion, migration and polarity. Differential expression was also seen for other genes of the Wnt PCP and Ca 2+ -pathways, suggesting a possible role of non-canonical signalling in RCC. Strong regulation was observed for Wnt-antagonists. While a previous study by Ueno et al. showed an epigenetical down-regulation of DKK3 [98], we could detect an up-regulation of DKK3. DKK3 has been shown to influence canonical, e.g. in lung cancer, as well as non-canonical Wnt signalling in for example prostate cancer, via interference with Wnt receptors and co-receptors. An increase in expression of sFRP2, 3 and 4 in RCC was also seen as compared to normal kidney tissue. sFRP1 and WIF1, both important inhibitors of Wnt-signalling, were down-regulated in RCC, which is in agreement with previous findings by others [99].
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Digitally Programmable Floating Impedance Converter using CMOS DVCC

Digitally Programmable Floating Impedance Converter using CMOS DVCC

The realized DPFIC of “Figure 2” was designed and verified by performing PSPICE simulation with supply voltage ± 2.5 V, using CMOS TSMC 0.25 μm technology parameters. The aspect ratios used are given in the Table 1. The DPFIC was used to design a digitally programmable ideal floating inductor (L) and FDNR (D), which were used in second order Table 1: The aspect ratios of the MOSFETs of the DPCCII

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High-Speed CAN Transceiver

High-Speed CAN Transceiver

The MCP2551 is a high-speed CAN, fault-tolerant device that serves as the interface between a CAN protocol controller and the physical bus. The MCP2551 provides differential transmit and receive capability for the CAN protocol controller and is fully compatible with the ISO-11898 standard, including 24V requirements. It will operate at speeds of up to 1 Mb/s.

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Fully coupled forward backward stochastic differential equations on Markov chains

Fully coupled forward backward stochastic differential equations on Markov chains

Along with the rapid development of the BSDE theory, the theory of fully coupled forward-backward stochastic differential equations (FBSDEs), closely related to BSDEs, has been developed rapidly. Fully coupled FBSDEs with Brownian motion can be encoun- tered in the optimization problem when applying stochastic maximum principle (see []) and in mathematical finance when considering a large investor in security market (see []). Such FBSDEs are also used in the potential theory (see []). As we know now, to get the

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Design and Analysis of a 0.4V 1.08mW 12GHz High-Performance VCO in 0.18μm CMOS (Invited Paper)

Design and Analysis of a 0.4V 1.08mW 12GHz High-Performance VCO in 0.18μm CMOS (Invited Paper)

In this paper, a differential cross-coupled VCO with an oscillation frequency around 12GHz with 0.4V low supply voltage and 1.08mW low core power is presented. At the 0.4V low supply voltage, by increasing the MOSFET device size and utilizing forward-body bias, the negative-conductance of the cross-coupled pair can be effectively improved. In addition, a capacitive-divided feedback is used in this work to boost the output voltage swing, leading to the low phase noise performance.

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A High CMRR-CMOS Instrumentation Amplifier Intended for Bioimpedance Imaging

A High CMRR-CMOS Instrumentation Amplifier Intended for Bioimpedance Imaging

An instrumentation (or instrumentational) amplifier is a type of differential amplifier that has been outfitted with input buffer amplifiers, which eliminate the need for input impedance matching and thus make the amplifier particularly suitable for use in measurement and test equipment. Additional characteristics include very low DC offset, low drift, low noise, very high open-loop gain, very high common-mode rejection ratio, and very high input impedances. Instrumentation amplifiers are used where great accuracy and stability of the circuit both short and long- term are required.
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Two Stage CMOS Operational Amplifier Using Cadence 180nm Technology.

Two Stage CMOS Operational Amplifier Using Cadence 180nm Technology.

ABSTRACT: In this paper we have presented a method for designing an Operational Amplifier using Differential Amplifier and Common Source Amplifier (CMOS-Two stage Op-Amp) using Cadence Virtuoso 180nm Technology. An Operational Amplifier is a DC- coupled High -gain electronic voltage Amplifier with a differential Input and usually a Single-ended output. Op-Amps are one of the widely used electronic devices at the present time, being used in a wide range of industries, consumers and scientific devices. Op-Amps are mainly used as a voltage follower, active rectifier, current to voltage converter, Mathematical operations and in different types of voltage filter. Here we are discussing about different operational parameters of Op-Amp such as Gain Band width, Gain, Phase Margin, Power dissipation etc. We are Designing the Op-Amp circuit with specifications and completing the design flow and verifying the DC analysis, AC analysis and Transient analysis
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XYZ Biotech Case Study: Reducing Cost and Improving Uptime for Air Handler System October 2008

XYZ Biotech Case Study: Reducing Cost and Improving Uptime for Air Handler System October 2008

With the Cypress solution local differential pressure gauges remain in place, but wireless gauge readers are installed over the gauges. These readers non-invasively “clip” onto the front of the gauges, are battery operated, and contain the wireless transmitter within the reader. A receiver can be located in a central location, with signal boosters strategically placed as required. The receiver has a stand-alone web interface monitoring software, and pre-set alarms may be programmed to alert technicians of excursions. As an alternative, the data could be integrated with an existing building automation system.
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