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The temperature sensor traditionally implemented using parasitic BJT in CMOS process is showing limitations in deep submicron technology node because of process variations. Since vertical PNP transistor in single n-well submicron process is prone to process variations, it impacts the accuracy of temperature sensor. Secondly, low voltage and low power specification of temperature sensor also goes against...
Voltage references are very essential components of analog VLSI circuits. A reference source is expected to remain constant against supply voltage, temperature and process parameter variations. The forward voltage drop across junction diode exhibits a negative temperature dependence of about 2mV/°C, which is compensated by a suitably scaled proportional to absolute temperature (PTAT) component to...
This work presents a design of temperature compensated and supply regulated current reference circuit with reduced process variation at low supply voltage of 1.5 V. The supply regulation of the proposed circuit is improved by using a regulated cascode technique together with an error amplifier in the CTAT (complementary to absolute temperature) circuit. The temperature compensation is achieved by...
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