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In this paper, we propose a low-power current reference circuit with little temperature dependence for micro-power electronics applications. The current reference circuit consists of a bias-voltage subcircuit, a current-source subcircuit, and an offset-voltage generation subcircuit. The offset-voltage generation subcircuit is used to compensate for temperature dependence of the reference current....
A novel curvature compensated low voltage high precision CMOS bandgap reference is introduced in this paper. It adopts a self-biased low-voltage operational amplifier and the specific voltage transfer cell to achieve the features of low power supply and low temperature coefficient with better curvature compensation. A T-type resistor network is designed to reduce the total resistances and therefore...
A novel bandgap reference for minimizing current-mirror mismatch is presented. In the proposed circuit, the small-signal current variations in the two current paths are self-compensated while in the conventional bandgap core they are multiplied. As a result, error caused by current-mirror mismatch has been much reduced in the proposed circuit. Moreover, the voltage variations caused by temperature...
In this work, the bulk-gate controlled circuit to improve the power supply ripple ratio (PSRR) of a Low Dropout Regulator (LDO) which deteriorates due to lowering power consumption is proposed. Designing with 0.25 mum CMOS process, the simulation results by HSPICE shown that the proposed circuit provides a high performance of PSRR even though 1/10 of the power consumption is reduced compare to the...
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