Kulbhushan Sharma, Anisha Pathania, Jaya Madan, Rahul Pandey and Rajnish Sharma
Adoption of integrated MOS based pseudo-resistor (PR) structures instead of using off-chip passive poly resistors for analog circuits in complementary metal oxide semiconductor…
Abstract
Purpose
Adoption of integrated MOS based pseudo-resistor (PR) structures instead of using off-chip passive poly resistors for analog circuits in complementary metal oxide semiconductor technology (CMOS) is an area-efficient way for realizing larger time constants. However, issue of common-mode voltage shifting and excess dependency on the process and temperature variations introduce nonlinearity in such structures. So there is dire need to not only closely look for the origin of the problem with the help of a thorough mathematical analysis but also suggest the most suitable PR structure for the purpose catering broadly to biomedical analog circuit applications.
Design/methodology/approach
In this work, incremental resistance (IR) expressions and IR range for balanced PR (BPR) structures operating in the subthreshold region have been closely analyzed for broader range of process-voltage-temperature variations. All the post-layout simulations have been obtained using BSIM3V3 device models in 0.18 µm standard CMOS process.
Findings
The obtained results show that the pertinent problem of common-mode voltage shifting in such PR structures is completely resolved in scaled gate linearization and bulk-driven quasi-floating gate (BDQFG) BPR structures. Among all BPR structures, BDQFG BPR remarkably shows constant IR value of 1 TΩ over −1 V to 1 V voltage swing for wider process and temperature variations.
Research limitations/implications
Various balanced PR design techniques reported in this work will help the research community in implementing larger time constants for analog-mixed signal circuits.
Social implications
The PR design techniques presented in the present piece of work is expected to be used in developing tunable and accurate biomedical prosthetics.
Originality/value
The BPR structures thoroughly analyzed and reported in this work may be useful in the design of analog circuits specifically for applications such as neural signal recording, cardiac electrical impedance tomography and other low-frequency biomedical applications.
Details
Keywords
Liberty Shoes Ltd, had been experiencing falling sales and decreased production as a result of frequent strikes by workers. By 2010, total sales had fallen to INR 300 crores (from…
Abstract
Subject area
Liberty Shoes Ltd, had been experiencing falling sales and decreased production as a result of frequent strikes by workers. By 2010, total sales had fallen to INR 300 crores (from INR 500 crores in 2005). In the Annual Board meeting in 2010, Mr Shammi Bansal, the Executive Director expressed his concerns and told the board members that “they must learn to survive or be extinct”. The case study discusses how The Executive Director turned the company around and how the organization became a “learning organization”.
Study level/applicability
MBA and Executive MBA programs.
Case overview
In 2004, Liberty Shoes Ltd, had a sales turnover of INR 500 crores. In the year 2006, this dropped to INR 300 crores as a result of regular staff strikes and low morale. However, by 2013, the company had registered sales of INR 800 crores and a growth rate of around 30 per cent on a year-to-year basis. With continued focused initiatives in the organization from 2010 the management aimed to reach a sales turnover of INR 1,000 crores by March, 2014. The contributing factors to this turnaround were the leadership roles which encouraged a learning organization culture with an emphasis placed on the importance of “communication”, “employee development” and “employee empowerment”.
Expected learning outcomes
Understand the role of a business leader in building a learning organization. Understand the factors contributing to the building of a culture of a learning organization. Understand the critical aspects and benefits to the organization from becoming a learning organization.
Supplementary materials
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Subject code
CSS: 6 Human resource management.