Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
Design Of A 14-Bit Fully Differential Discrete Time Delta-Sigma Modulator, Sumit Kumar Nathany
Design Of A 14-Bit Fully Differential Discrete Time Delta-Sigma Modulator, Sumit Kumar Nathany
Theses
Analog to digital converters play an essential role in modern mixed signal circuit design. Conventional Nyquist-rate converters require analog components that are precise and highly immune to noise and interference. In contrast, oversampling converters can be implemented using simple and high-tolerance analog components. Moreover, sampling at high frequency eliminates the need for abrupt cutoffs in the analog anti-aliasing filters. A noise shaping technique is also used in DS converters in addition to oversampling to achieve a high resolution conversion. A significant advantage of the method is that analog signals are converted using simple and high-tolerance analog circuits, usually a 1-bit …
0.35um Implementation Of An Experimental Mixed Signal Image Compression Circuit, Reema Divatia
0.35um Implementation Of An Experimental Mixed Signal Image Compression Circuit, Reema Divatia
Theses
Switched-current is an analog, discrete in time, signal processing technique that is fully compatible with any digital CMOS technology. This means that analog circuits can be realized together with digital components on a single chip without any additional technological processes. In designs implemented using the switched-current technique, the individual circuit elements interact by the means of currents, which allows to reduce voltage swings and thus power consumption. This work investigated the implementation of a low power mixed signal image compression system in TSMC 0.35um technology. The major components of this system were two dimensional discrete cosine transform processor, analog to …