Design Of Continuous Time Second Order Sigma

This project has many applications and many future expansions and functions that can be added on. By having a variable floating DC power supply, 7Hz-6 KHz function generator, and oscilloscope with leads connecting to any circuit built, the comprehensive hands-on learning tool would be ideal for most DeVry students.

A phase-locked loop (PLL) generates a signal that has a fixed relation to the phase of a reference signal and is given in Fig. 4. A phase locked loop responds to both the frequency and the phase of the input signals, automatically raising or lowering the frequency of the controlled oscillator until it is matched to the reference in both frequency and phase. Here three phase PLL was implemented with three basic functional blocks: the phase detector, a PI controller and a voltage controlled oscillator. The phase detector is a circuit capable of delivering an output signal that is proportional to the phase difference between its two input signals. The PI controller is a low pass filter and used to suppress high frequency component and provide dc controlled signal to voltage controlled oscillator which acts as an integrator. The output of the PI controller is the inverter output frequency that is integrated to obtain inverter phase angle θ. When the difference between grid phase angle and inverter phase angle is equal, Vq =

Figure.10 (a) Hardware test bench set up (b) Gating pulses for 70 KHz from DSP processor (c) Input voltage and input current waveforms for 230Vrms (d) Input voltage and input current waveforms for 110 Vrms

Abstract— Advancement in the VLSI technology leads to the reduction in chip size and increase in chip density. As the chip density increases the overall power consumption and the complexity also increases. As the performance of any system is measured mainly on power consumption, it is recommended to use low power VLSI Design techniques. In this paper, we would discuss the GDI logic and its application in the modeling of adders for Vedic Multiplier design. Adders are of prime importance, the design of reliable and efficient adder for a VLSI based embedded application matters. This paper primarily deals with the design of Ripple Carry Adder, Kogge Stone Adder, and Brent Kung Adder using CMOS and GDI logic. Urdhava Triyagbhayam sutra is used

A special oscillator circuit is used in high frequency spectrum analyzer. The name of oscillator is B

By this new platform, the circuit could be modified easily and faster to form the derivative products.

The framework of the software will be the mathematical model of the impulse generator circuit. For different input values, the corresponding waveforms will be obtained. The main focus of this research will be towards accessing waveforms and its characteristics that corroborates the industry standard and laboratory experimental values with expected accuracy not lesser than 60%.This software will be made available to work in cross platform operating systems such as Windows, android, Mac etc. so that the user can download and install the application in their favourite media device at

Table 7. Relative term for the standard uncertainty budget of the current-to-voltage conversion gain (G(I)) of a DUT using the Keithley 263 DC current source.

The CA3140A and CA3140 are integrated circuit operational amplifiers that combine the advantages of high voltage PMOS transistors with high voltage bipolar transistors on a single monolithic chip. The CA3140A and CA3140 BiMOS operational amplifiers feature gate protected MOSFET (PMOS) transistors in the input circuit to provide very high input impedance, very low input current, and high speed performance. The CA3140A and CA3140 operate at supply voltage from 4V to 36V (either single or dual supply). These operational amplifiers are internally phase compensated to achieve stable operation in unity gain follower

The purpose of this report is to investigate the property of feedback in a multi-stage amplifier. The report describes the frequency response and time of distortion occurrence of open and close loop in their linear operating region. In the method of contrast, the advantages and disadvantages of feedback can be easily summarized. Besides the things above, practical amplifier has some operating constrains. The report also illustrates the possible constrains that are current limit, slew rate and saturation of the output at supply rails. The final investigation of this report is the relationship between resonance and the time-domain response.

Referring to Fig. 1(ii), consider in region II, the reference voltage vector is following the arc x1x2 at a particular modulation index m. The position of the reference voltage vector is shown in Table 1. It shows that, depending on modulation index value, the duration of stay within subsector 1 and subsector 2 changes. Similarly, consider in region III, the reference voltage vector is following the arc y1y2 at aparticular modulation index. The position of the reference voltage vector is shown in Table 1 and it shows that depending on the modulation index value, the duration of stay within subsector 2,3 and 4 changes.

This thesis investigates several types of Sigma-Delta modulators in different conditions as a possible solution to the all-digital audio and wifi signal receivers.

Analog to digital converters (ADCs) is a mixed signal processing device that converts analog signals which are real world signals to digital signals for processing the information. With the advancement of technology, digital signal processing has progressed prominently in recent years. The aim of design is low power, high speed and wide bandwidth analog-to-digital converter has increased tremendously. Therefore the focus of this thesis is to design low power Flash ADC that operates at high speed.

This project has been done under the guidance of Mrs Puneeta Goel and has been checked thoroughly by her.

The goal of this research objective is to analyze the performance of Delta-Sigma linear processing circuits, including adders and coefficient multipliers. Examples of questions that we wish to address include the following. What is the noise shaping performance of high-order digital Delta-Sigma modulators for Delta-Sigma adders? What is the frequency response of Delta-Sigma coefficient multipliers? What is the circuit power and area of Delta-Sigma MAC circuits compared to conventional circuits?