By Willy Sansen (auth.), Michiel Steyaert, Arthur van Roermund, Andrea Baschirotto (eds.)
Analog Circuit layout comprises the contribution of 18 tutorials of the 20 th workshop on Advances in Analog Circuit layout. each one half discusses a selected to-date subject on new and beneficial layout rules within the region of analog circuit layout. each one half is gifted via six specialists in that box and state-of-the-art details is shared and overviewed. This e-book is quantity 20 during this profitable sequence of Analog Circuit layout, supplying beneficial info and perfect overviews of:
Topic 1 : Low Voltage Low strength, chairman: Andrea Baschirotto
Topic 2 : brief diversity instant Front-Ends, chairman: Arthur van Roermund
Topic three : energy administration and DC-DC, chairman : Michiel Steyaert.
Analog Circuit layout is a necessary reference resource for analog circuit designers and researchers wishing to maintain abreast with the newest improvement within the box. the academic assurance additionally makes it compatible to be used in a sophisticated layout course.
Read or Download Analog Circuit Design: Low Voltage Low Power; Short Range Wireless Front-Ends; Power Management and DC-DC PDF
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Extra info for Analog Circuit Design: Low Voltage Low Power; Short Range Wireless Front-Ends; Power Management and DC-DC
A numerical justification of this argument is found in . 4 Exploratory Low-Power Design Techniques The techniques described in the previous section are widely used and have been in mass production for many years. In this section, we will consider exploratory ideas that have not yet found widespread industry adoption, and are mostly used in 30 B. Murmann experimental converters. Since approximately 50–70% of all power in a pipelined ADC is dissipated in the residue amplifiers, research has focused mainly on this particular building block within the converter.
For designs with wideband inputs, it is conceivable to measure and calibrate the mismatch . Alternatively, it is possible to merge the sampling operation for the two paths into a single circuit . 5 Flip-Around Charge Redistribution Beyond reducing the number of amplifiers in the pipeline, the next step is to improve the efficiency of the circuit at the transistor level. A widely used idea is to employ “flip-around” charge redistribution . 5-bit pipeline stage that uses this technique is shown in Fig.
The sign of the voltage on the capacitor set formed by CT and CMSB represents the sign of the current signal Q0 , so the comparator can be used again to determine it. Depending on the comparator output, the switches c1p or c1n are closed, and the following charge sharing action between CTP , CTN , CMSB and the newly connected CMSB 1 will cause the voltages VQP and VQN to rise or fall. Intuitively one can see that the SAR algorithm at each step uses these pre-charged capacitors to add or subtract a binary scaled-down charge to the initial charge (that represented the sampled input voltage) until the results converges to zero.