A Capacitively-Coupled Autozeroed and Chopped Operational Amplifier

This thesis describes the design and simulation of a capacitively-coupled autozeroed and chopped operational amplifier in the TSMC high-voltage BCD 0.18 μm 5 V technology. It uses chopping and autozeroing to achieve high precision (10 μV offset and 50 nV/√Hz noise density) and a capacitively-coupled input stage to safely handle beyond-the-rails...

Chopper PWM-Based Class-D Amplifier

Class-D amplifiers are widely used in audio applications that require a high power efficiency. A high PSRR is beneficial when the power supply contains significant audio band content. Due to mismatches present in the feedback, these can dominate the PSRR of the class-D amplifier, provided the amplifier has sufficient loop gain. No literature has...

An FM Chirp Waveform Generator and Detector for Radar: Baseband, intermediate frequency, low noise and RF power amplifiers

This report describes the design of different amplifiers that are part of an FM transceiver. This is part of a larger project, which has the objective to design a complete FM transceiver from discrete components only, meaning that IC technology is not considered. <br/>The circuits designed are two baseband amplifiers, an intermediate frequency...

Amplifier design for an implementation of motional feedback in a bass loudspeaker

The displacement of a loudspeaker cone is not linearly proportional to the voltage/current at its input provided. This is due to electrical and mechanical limitations. The distortion is more noticeable at lower frequencies. This report is one of two reports, that will explain how to minimize this distortion. The motion of the loudspeaker cone...

Designing a new guitar amplifier that evolves from traditional styles into a contemporary product

The assignment was compiled by the student itself without a company involvement. It originated from the student its observation that there seemed to be very little style variation in guitar amplifier design. The formulation of this observation with the objective to find a new style for this product category, evolving from the traditional style,...

A 0.6V, 1μW, low-power low-noise instrumentation amplifier for ECG/BioZ measurement in 40nm CMOS

This thesis presents a low-power low-noise instrumentation amplifier designed to be implemented in 40 nm CMOS technology and operating from a 0.6 V supply, intended for use in electrocardiogram (ECG) and bio-impedance (BioZ) signal acquisition. This instrumentation amplifier has one ECG channel, one BioZ channel and allows both signals to be...

Amplifier Design in a Motional Feedback System

The quality of audio amplifiers used in Hi-Fi sound installations is largely determined by the distortion of the output signal. This report proposes a method of improving the distortion reduction in audio amplifiers by using a topology with active feedback. The characteristics of the standard non-inverting amplifier are extended to this new...

A Low-Power Class-AB Residue Amplifier for a 12bit 500MS/sec Pipeline ADC with Digital Calibration

This work mainly focuses on designing a low-power class-AB residue amplifier for a 12bit 500MS/sec pipeline ADC with digital calibration. A foreground ideal calibration test bench has been implemented in MATLAB to correct non-linearities of the amplifier up to the 5th order. A detailed comparison has been made between a class-A amplifier and a...