IIT Mandi’s Research Scholars have developed the performance analysis of miniaturized circuitry used in modern devices, including mobile phones and tablets to advance modern devices with better performance even under irregular DC power supply.
The results of this work at IIT Mandi, supported by the Ministry of Electronics and Information Technology (MeitY), have been broadcasted in IEEE Open Journal of Circuits and Systems recently.
Dr Hitesh Shrimali, Associate Professor, School of Computing & Electrical Engineering, IIT Mandi, and his research scholar, Mr Vijendra Kumar Sharma, and Dr Jai Narayan Tripathi from IIT Jodhpur were part of the research work.
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Dr Shrimali stated, “There is a need to understand the design equations that take into account the miniaturized parts of mixed electronic circuitry in order to improve the performance of the device and enhance the robustness of the components to power fluctuations.”
The IIT Mandi Research team studied the losses that occur because of the power supply fluctuations to develop the design specifications of mobile devices in terms of speed, distortion levels, power, gain, etc.
The electronic circuitry in modern devices such as mobile phones, laptops and tablets includes both analogue and digital components on a single semiconductor IC. The batteries provide low voltages (3.7 V), the individual parts of the miniaturized circuitry of mobile gadgets work at even reduced voltages.
Therefore, any fluctuations in the power of the battery can cause serious performance deterioration. The designs of circuitry are still using the concepts developed 20 years ago and have not worked upon the altered physics witnessed at nanometric size scales of modern electronics parts.
Dr Shrimali added, “Very Large-Scale Integration (VLSI) electronics are ubiquitous in today’s world, although we are not aware of it.”
Analog-to-Digital Converters (ADC), Transceivers, antennae, amplifiers, and Digital-to-Analog Converters (DAC) are primary parts of the commonly used devices, including mobile phones, digital music players, laptops and tablets. It requires such optimizations in design to extend their life and enhance performance quality over time.
The lead researcher at IIT Mandi, revealed, “We have used the matrix theory and closed-form of equations for transistors to analyse the key design specifications for the design of electronics that use VLSI of miniaturized components.”
Once the method was developed, the team has also verified the proof-of-concept through two examples of output stages for analogue and digital blocks in a standard 180-nanometre technology with 1.8 V of supply and same geometric area.
Further, their models accepting the inspection method and the industry-standard SPICE tools observed a maximum mean percentage error (MPE) of 3% for all the examples, which confirms the durability of this approach in developing electronic components that are not greatly affected by power fluctuations.
Thus. the published research by IIT Mandi will enhance the productivity of high-speed on-chip systems.
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