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The performance of digital circuits can be improved by more efficient implementation. For certain circuits this can be done by using pass transistor logic. This paper compares pass transistor logic styles with the standard CMOS logic style. It will be shown that pass transistor logic is able to outperform the standard approach, not only by simulation but by measurements in silicon. Measurements have...
Today, energy saving is a major design target, since the number of mobile-or power-independent devices is increasing. These devices should operate as long as possible with one battery charge. Especially for designs where speed is of secondary importance, adiabatic circuits are a promising alternative. These kind of circuits are rather slow but extremely energy efficient. However, the full potential...
For the manufacturing test of ASICs, it is important to reach a high test coverage in order to get the defect level as low as possible. However, complex digital circuits are usually not fully testable. In order to address that, previous work suggested to realize the circuits by means of Binary Decisions Diagrams (BDDs). Here, each node is implemented using multiplexer gates (MUX gates) which, with...
In the presented paper we examine and compare different adder structures for their EMC behavior. On the one hand the analysis is carried out for different topologies as Ripple Carry Adder and Kogge Stone Adder. And on the other hand these topologies are realized in different logic styles as standard CMOS, complementary pass transistor logic, buffered NMOS pass transistor and complementary buffered...
A practical way for the realisation of LC VCOs is presented. The design plan takes frequency and power constraints as input parameters, uses available inductor, varactor and transistor models for basic simulations and delivers a dimensioned circuit. Both, low phase noise and low power design fundamentals are respected, as well as NMOS-, PMOS- and CMOS transistor cores can be used. The design plan...
Low-power Real Time Clock (RTC) circuits are important parts in a variety of modern applications. In addition to the low power-consumption, the frequency stability of the oscillation circuit and the whole RTC is important. We propose a RTC circuit that shows a deviation between −95ppm and 3.27ppm of the oscillation frequency from the mean value. The Measurements have been carried out over a manufactured...
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