A CMOS 8-bit binary type current steering Digital to Analog Converter DAC with dynamic random return to zero technique to improve dynamic performance is presented in this paper. Current steering DAC has advantage of constant output impedance and high conversion rate. To demonstrate the proposed technique, 8 bit CMOS DAC is designed and layout is prepared in 90 nm technology. Computation of Inte...

Data converters, i.e., analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), are interface circuits between the analog and digital domains. They are used in, e.g., digital audio applications, data communication applications , and other types of applications where conversion between analog and digital signal representation is required. This work covers different aspects re...

Nowadays, the development of the IC technology resulted in a growth of digital systems. Thus, Analog to Digital converters have become important. The important criteria of an ADC are resolution, speed and power. Among them, speed plays an important role to be enabling faster and more reliable for data processing. This paper describes a successive approximation ADC that uses a charge-redistribut...

There is a general need for spacecraft systems to make use of advances in analog to digital (ADC) and digital to analog (DAC) technologies. In particular, imaging systems such as star trackers and remote sensing instruments require 14,16, or more bits ADCs that have low power consumption, fast conversion rates (>1 MSPS) and good radiation tolerances. Because ADC and DAC have both analog and dig...

Problem statement: With the advent of the advanced technology and the need for more advanced equipment, the current progress and development of electronic instruments stimulate more interest and efforts for more innovative ideas and better designs. Many real world physical values, such as sounds, temperature, pressure and humidity, can be measured as analog or continuous signals. However, to pr...

The use of Sigma-Delta (Σ∆) modulation for analog-to-digital conversion (ADC) in the communication frequency range is evaluated. Two high-order multi-bit architectures are proposed to achieve +12-bit dynamic range at 4Msample/s Nyquist rate using very low oversampling ratio. They show very low sensitivity to the internal D-to-A conversion (DAC) error with no calibration required. Simulations sh...

The integrated circuit has, since it was invented in the late 1950’s, undergone a tremendous development and is today found in virtually all electric equipment. The small feature size and low production cost have made it possible to implement electronics in everyday objects ranging from computers and mobile phones to smart prize tags. Integrated circuits are typically used for data communicatio...

This paper presents an energy efficient successive-approximation register (SAR) analog-to-digital converter (ADC) for low-power applications. To improve the overall energy-efficiency, a skipping-window technique is used to bypass corresponding conversion steps when input falls in window indicated by time-domain comparator, which can provide not only polarity of input, but also amount informatio...