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A 657 mV, 43μW, Second Order CMOS Bandgap Reference on Chip

Madan Mali, Dr. Mukul Sutaone, Amruta Kulkarni, Mangesh Bhalerao

Abstract


Bandgap reference (BGR) circuits find widespread use in many applications like analog to digital converters, PLLs, DRAMs, flash memories, SRAMs etc. They generate a reference voltage which is equal to the bandgap of the material used. This paper describes the design, pre layout and post layout experimental results of proposed bandgap reference. There is an increased usage in battery operated devices where the main constraint is power consumption. Keeping this in view, the main aim while designing the bandgap reference is extremely low power dissipation. The proposed bandgap reference when simulated generates a reference voltage of 657mV, operating on a supply voltage of 1.2V. The technology used is 0.13μm CMOS and it dissipates power of only 43μW.

Keywords


Bandgap, Curvature Compensated, Reference, Second Order.

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