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Title: A 0.5 V, 1 nA Switched Capacitor PTAT Current Reference Circuit
Authors: Hanumantha, Rao, G.
Rekha, S.
Issue Date: 2019
Citation: 2019 IEEE International Conference on Modeling of Systems Circuits and Devices, MOS-AK India 2019, 2019, Vol., , pp.51-54
Abstract: This paper presents a low voltage, low power Proportional to Absolute Temperature (PTAT) current reference circuit. Switched capacitor is used instead of a large resistor, which in turn reduces the area of the circuit and makes the circuit less process sensitive. The proposed circuit has been designed using UMC 65 nm CMOS technology and simulated in Cadence Virtuoso. It generates a reference current (Iref) of 1 nA at 0.5 V supply voltage (Vdd) at room temperature (27�C) and follows PTAT characteristics in the temperature range of -10�C to 80�C. The total power consumption of the circuit is as low as 1.5 nW. The supply voltage sensitivity of Iref is 2.7 %/V, which shows that the proposed circuit is less sensitive to supply voltage variations. Index Terms - Low voltage, Low power, PTAT current, Switched capacitor. � 2019 IEEE.
Appears in Collections:2. Conference Papers

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