DocumentCode :
2062835
Title :
Analog field programmable CMOS current conveyor
Author :
Kapur, G. ; Mittal, Sparsh ; Markan, C.M. ; Pyara, V.P.
Author_Institution :
VLSI Design Technol. Lab., Dayalbagh Educ. Inst., Dayalbagh, India
fYear :
2012
fDate :
16-18 March 2012
Firstpage :
1
Lastpage :
6
Abstract :
We propose a simplified analog design cycle to generate reconfigurable and accurate prototype of several analog ICs. On applying the design cycle a comprehensive design methodology is being developed that make designs customizable and adaptable by a field user. The basic design of a second generation current controlled current conveyor is first analyzed to estimate the basic circuit configuration to verify its basic functionality. Secondly using its small signal equivalent model, ac and dc characteristics are being derived in terms of threshold voltage of transistors, present in the circuit. Indeed, with the help of floating gate transistors, which has a feature of post fabrication programmability of its threshold voltage, an accurate and reconfigurable prototype of the design can be obtained. The circuit is simulated using BSIM3 level49 MOSFET models in T-Spice 0.35μm CMOS process. Various Characteristics of CCCII are being derived and estimated their sensitivity with respect to threshold voltage of respective floating-gate transistors. The simulated results demonstrate that by programming threshold voltages, fine tuning of circuit specifications with wide spectrum can be achieved. The designs fabricated using our methodology can be adaptive to any desired value of specification with very high precision (about 13bit programming precision can attain with floating gate transistor). It can also make Analog ICs immune to most drawbacks like processes variations, device degradation by introducing new possibilities such as self correction and adaptability.
Keywords :
CMOS analogue integrated circuits; MOSFET; current conveyors; integrated circuit design; semiconductor device models; AC characteristics; BSIM3 level49 MOSFET models; CCCII; DC characteristics; T-Spice CMOS process; analog IC; analog design; analog field programmable CMOS current conveyor; circuit configuration; field user; floating gate transistors; post fabrication programmability; second generation current controlled current conveyor; size 0.35 mum; small signal equivalent model; transistor threshold voltage; word length 13 bit; Equations; Impedance; Mathematical model; Programming; Sensitivity; Threshold voltage; Transistors; Accuracy; Analog Integrated Circuits; Current controlled conveyor; Field Programmable analog array; Floating-gates; Reconfigure; Specifications; Threshold voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering and Systems (SCES), 2012 Students Conference on
Conference_Location :
Allahabad, Uttar Pradesh
Print_ISBN :
978-1-4673-0456-6
Type :
conf
DOI :
10.1109/SCES.2012.6199030
Filename :
6199030
Link To Document :
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