Sigma-Delta ADC is different from Nyquist sample rate ADC. By employing over-sampling principle and noise shaping technique, most noise is removed out of the signal band. Then decimation filter filters out the out-band high frequency shaping noise and achieves higher signal to noise ratio (SNR). The structure reduces sensitivity to analog devices precision and matching.
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Radio Frequency Identification (RFID) technology is a non-contact automatic identification technology which use radio frequency signal and its spatial coupling and transmission characteristics to proceed two-way communication and achieve the automatically capture of stationary or moving objects and access to relevant data. Identification, management and tracking technology to people and goods of Radio Frequency Identification
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Bandgap voltage reference(BGR) is currently the voltage reference most widely used in integrated circuits, and it’s technology is matured, a typical BGR has been able to achieved low temperature coefficient and high stability. But in the current, the supply voltage of BGR is generally greater than 1.25V and the output voltage is fixed. With the
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Bandgap voltage reference(BGR) is currently the voltage reference most widely used in integrated circuits, and it’s technology is matured, a typical BGR has been able to achieved low temperature coefficient and high stability. But in the current, the supply voltage of BGR is generally greater than 1.25V and the output voltage is fixed. With the
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Moore’s Law advances that transistor counts would double every 18 months and the speed of CPU be faster. The power has become the main problem in the IC design, and low power design techniques have became essential for today’s VLSI industry. Most of VLSI circuits are sequential circuits. Sequential circuits can be simulated by symbolic
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RFID (Radio Frequency Identification) is a new and emerging technology, which is a comprehensive technology involving various subjects. Such as microwave technology, materials science, computer technology and so on. Especially UHF (UHF, Ultra High Frequency) radio Frequency identification technology, with highe speed and wide reading range, is becoming more popular in the use of supply
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With the development of high-performance microprocessor architecture and scaling of IC technology, chip integration and frequency keep increasing. At the same time, the induced power and thermal explosion have been seriously challenging processor stability and reliability. Leakage power is increasingly becoming a major component of the power consumption of microprocessors. Without any effective control, processor
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With the development of high-performance microprocessor architecture and scaling of IC technology, chip integration and frequency keep increasing. At the same time, the induced power and thermal explosion have been seriously challenging processor stability and reliability. Leakage power is increasingly becoming a major component of the power consumption of microprocessors. Without any effective control, processor
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With the vigorous development of electronic technology, electronic devices consumer market calls for portable products much than before. Portable means small size, low power and high performance, which makes wireless receiver front-end chip with the increasing application.In the wireless receiver, frequency synthesizer is an important module. The voltage-controlled oscillator, for frequency synthesizer, that is a
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The research work of memory has always been a hot topic in the region of semiconductor trade. While in the family of the semiconductor memory, the Static Random Access Memory (SRAM) plays a very important role. Considered about the hot point of low-power, high-performance research, the paper designed SRAM architecture under the theory of Near-Threshold
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