Projects

Projects

IIT Jodhpur is working under CSIR-CEERI Pilani cluster. For cluster project, a 200 MHz Phase-locked Loop (PLL) is developed. Along with PLL, a 1 KB Static Random Access Memory (SRAM) block is also designed. For individual project, a System for Signal Conditioning for Ambient and Environment Sensing is being developed.

SRAM (Cluster)

A 1 KB Static Random Access Memory (SRAM) and its control circuit are designed to be implemented in 180nm technology. Designed SRAM is working on 200 MHz and exhibited good memory cell stability. Overall SRAM architecture was implemented using 6 transistors (6T) memory cells accessed by row and column decoders. Control logic architecture was also implemented to perform read and write operations using sense amplifier and write driver circuits respectively. The circuit achieved memory access time of 5 ns, which is among the lower values from many earlier published reports for similar technologies, while consuming 5.2 mW power for one byte.

PLL (Cluster)

A stable Phase Locked Loop (PLL) working in MHz frequency range is designed. Rise and fall time are equal for low operating frequencies. All the blocks of PLL i.e Phase Frequency Detector (PFD), Charge Pump and Loop Filter (CPLF), Voltage Controlled Oscillator (VCO) and Frequency Divider (FD) are carefully designed and integrated. PFD is implemented using D flip-flop and is made to detect minimal phase errors. CPLF has differential design for noise immunity and for avoiding floating conditions. The 15 stage VCO gives frequency range of 110 MHz to 380 MHz for input voltage range of 0.5 V to 0.8 V with a resistor for optimizing linearity. The integrated PLL is stable in the output frequency range of 120 MHz to 360 MHz for given input frequency range of 15 MHz to 45 MHz. The designs are implemented in 180 nm technology and for a supply voltage of 1.8 V.

System for Signal Conditioning for Ambient and Environment Sensors (Individual)

The aim of this project is to design a System for signal conditioning for ambient and environment sensors, specifically for toxic or combustible gases. The project will involve the designing the System, and required information processing, as well as design of a test and development platform (hardware + software) for interfacing the essential components between the sensor signal conditioning circuit sensors or sensor arrays. Firstly, the signal conditioning circuit will be designed using various available sub modules for example, Temperature sensors and Light Sensors. Later, the systems will be designed and implemented using full custom IC design tools involving more flexibility over the uses of variety of sensors.