Low power Front-End amplifiers-A Survey

Due to the commercial use of battery-powered portable devices, low power circuits are required. A low power, low noise front end is the important key for various battery-operated devices for real-world applications. In this review paper, various modifications of popular front-end with their performance parameters like CMRR, PSRR, slew rate, power dissipation, etc. have been studied. The comparison between different topologies of front-end amplifiers to have more power-efficient, low noise, high gain, and better bandwidth at low supply voltages to be analyzed. This review paper provides an assessment of low power front end amplifiers.