Low-Voltage Low-Power Broadband CMOS Analogue Circuit for White Gaussian Noise Generation

A low-power continuous-time CMOS analogue circuit for white Gaussian noise generation with a supply voltage of 1.5 V is presented. The performance of this circuit is compared with the state-of-the-art of the Gaussian noise generators. The proposed circuit is optimized for a standard 0.35 m CMOS technology, using an equation-based design methodology based on genetic algorithms. Measurement results demonstrate that the circuit is capable of producing a high noise amplitude within a large bandwidth while using a relatively low power dissipation. Targeted applications for this circuit are: uniform noise generator circuits and the built-in self-calibration and on-chip built-in self-testing of video-rate analogue-to-digital converters.