نتایج جستجو برای: reference circuit
تعداد نتایج: 381493 فیلتر نتایج به سال:
This paper presents the design of a low-power voltage reference, bias current and the supply voltage for a 9-bit fully differential ADC. The references, power supply circuits and the ADC are integrated in one circuit, i.e. chip. The proposed chip is implemented in the UMC 0.18 μm CMOS process and occupies 800×700 μm. The circuit supply voltage V DD is obtained from the external RF signal. When ...
A compact, very low voltage, temperature-independent reference circuit, which is based on the thermal properties of bipolar junction transistors in the saturation region is presented. The new circuit operates from a minimum power supply of less than 1V and provides a reference voltage with a nominal thermal drift of 30 ppm/8C in the temperature range between 240 and 1108C. The proposed circuit ...
This paper describes a CMOS voltage reference circuit which occupies small die area and has less than 1.25 V of output voltage. The reference voltage is determined by a resistor ratio, and it is possible to set the reference voltage from zero to near the supply voltage with the same temperature independence as those of Widlar’s and Brokaw’s bandgap voltage references. The temperature-independen...
Bandgap Reference voltage chip is implemented in 0.25μm CMOS technology with ESD protection. This chip can be designed by using a layout tool micro wind 3.1.7 version. The chip circuit generates a reference voltage of 1.23 V. It can operate between 20oC & 70oC temperature. Band gap core produces a voltage that is insensitive to variation in temperature. It has a unique protection with respect t...
Lock and settling times are two parameters which are of high importance in design of DLL-based frequency multipliers. A new architecture for DLL-based frequency multipliers in digital domain is designed in this paper. In the proposed architecture instead of using charge pump, phase frequency detector and loop filter a digital signal processor is used. Gradient algorithm is used in the proposed ...
In this work a new resistorless sub-bandgap voltage reference topology is presented. It is a self-biased and small area circuit that works in the nano-ampere consumption range, and under 1 V of power supply. The behavior of the circuit is analitically described, a design methodology is proposed and simulation results are presented for a standard 0.18 μm CMOS process. A reference voltage of 463 ...
In this paper, a new low-VDD CMOS bandgap reference circuit with small layout area and low power consumption is proposed. The proposed circuit delivering its output voltage below 1V has its Proportional-To-Absolute-Temperature (PTAT) term compensated by the Complementary-proportional-To-AbsoluteTemperature (CTAT) voltage thereby suppressing a change in its output voltage regardless of temperatu...
An automated visual printed circuit board (PCB) inspection system proposed in this paper is designed specifically to detect various types of defects occurred during circuit printing process in manufactory. Two-dimensional HAAR wavelet transform is incorporated in the PCB inspection algorithm of the inspection system. During the inspection, two type of images are required; reference and tested P...
abstract: the present study is an attempt to find out cultural exophoric references in iranian high-school elt textbooks and touch stone series to compare the frequency of occurrence of such references in these books. the purpose is to find out which of the series of the books under investigation impose a greater referential burden on efl learners as far as their reading comprehension of the ...
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