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A 2.1 GHz CMOS front-end with a single-ended low-noise amplifier (LNA) and a double balanced, current-driven passive mixer is presented. The LNA drives an on-chip transformer load that performs single-ended to differential conversion. A detailed comparison in gain, noise, and second and third order linearity performance is presented to motivate the choice of a current-driven passive mixer over an...
The implementation of complex functionality in low-power nano-CMOS technologies leads to enhance susceptibility to parametric disturbances (environmental, and operation-dependent). The purpose of this paper is to present recent improvements on a methodology to exploit power-supply voltage and temperature variations in order to produce fault-tolerant structural solutions. First, the proposed methodology...
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...
Data retention power gating is a commonly used method for leakage reduction in deep submicron SRAM. However, application of such methods result into reduced stability of the SRAM bitcell. Moreover, reducing supply voltage and increasing process variation put a limitation on such usage in deep submicron processes. Present scheme describes a method to enhance stability while applying such data retention...
A new approach for the optimization of high-speed amplifiers dedicated to SC integrators is presented. Inverter-based pseudo-differential structures are shown to be well-suited to high speed applications. The problem of their inherently poor PSRR is solved by an on-chip low-area voltage regulator. An algorithmic method developed for the computer-aided synthesis of the amplifier is described. Experimental...
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