A 2.5V supply low noise CMOS amplifier using noise reduction technique of Chopper stabilization

In this paper, a low-noise CMOS amplifier operating at a 2.5 supply voltage is presented and developed by using the noise reduction technique chopper stabilization. Chopper stabilization is a technique used to reduce the effects of flicker noise and offset. The low-noise amplifier fabricated by a 0.18-µm CMOS technology was measured at 2.5 V performance of 5-nV/Sqrt(Hz) input noise at 1-KHz chopping frequency 1-nV/Sqrt(Hz) input noise at 3-KHz chopping frequency that is considerable compared to previous results.