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Capacitor based DACs are common designer's choice for projects realized in nanometer technologies. Designs kits provide several devices that can be used as capacitors. However, they exhibit serious differences in terms of linearity, minimum area and sensitivity to process disturbances The paper presents analysis of capacitive divider design to be used in 8-bit DAC realized in 65 nm CMOS process. Various...
Customer demands for battery powered portable electronic devices have increased. Today high data rates could be transmitted using fourth generation Long-Term Evolution (4G LTE) wireless communications standard. To increase system runtime proper envelope amplifier's architecture has to be selected. Using envelope tracking technique efficiency of the transmitter's power amplifier (PA) can be improved...
In this paper, we provide a detailed analysis on the power consumption of two-stage pipeline successive approximation analog-to-digital converter (SAR ADC) and also show the relationship between stage resolution and the total power consumption in 65 nm technology. Thereafter, we evaluate the analysis results with designing a 15-bit pipeline SAR ADC in 65 nm technology and also a power comparison between...
This paper deals with design of readout system, and then its monolithic implementation, intended for spectroscopy in THz range. At the beginning, the fundamentals of THz spectroscopy based on selective NMOS pixel line, and its possible applications for materials identification are presented. Next, the preceding work on single-channel readout circuit is shortly recalled, with a special emphasis on...
In this paper a new voltage reference circuit concept is introduced. The presented voltage reference circuit is especially useful for low power applications. The reference circuit has two modes: the high accuracy and the low power mode. During the high accuracy mode the energy consumption is much higher than during the low power mode where accuracy is secondary. The fields of application are use cases...
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