Fully Integrated CMOS Power Amplifier Design Using the Distributed Active Transformer Architecture

EBook Description: T HE DESIGN of a fully integrated power amplifier with a reasonable output power, efficiency, and gain remains one of the major challenges in today�s pursuit of a single-chip integrated transceiver. Although several advances have been made in this direction, a truly fully integrated CMOS power amplifier at watt level output power has not been reported to this date.

Recently there has been a resurgence of two "ancient" technologies - vacuum tube (valve) amplifiers and Class-A systems. The big question is .... is there a difference? This discussion centres on the Class-A amplifier, and explains (or attempts to) how it is different from a conventional power amplifier.

Amplifiers: From Ideal to Real

Amplifier specifications: Gain, Gain-Bandwidth Product, Common-Mode Rejection Ratio, Settling Time, Input Impedance, etc are explained and compared for different categories of amplifier. Gain as a function of frequency is dealt with in particular.

A Single Supply Op Amp Circuit Collection (PDF 27p)

There have been many excellent collections of op-amp circuits in the past, but all of them focus
exclusively on split-supply circuits. Many times, the designer who has to operate a circuit from a
single supply does not know how to do the conversion.
Single-supply operation requires a little more care than split-supply circuits. The designer should
read and understand this introductory material.

Op Amps For Everyone (PDF 464p)

The solution was to first build an amplifier that had more gain than the application required. Then some of the amplifier output signal was fed back to the input in a manner
that makes the circuit gain (circuit is the amplifier and feedback components) dependent
on the feedback circuit rather than the amplifier gain.

Operational Amplifiers Basic Concepts (PDF 50p)

� Definition of function - what you want.
� Block diagram - translate into circuit functions.
� First Design Review.
� Circuit design - the details of how functions are
accomplished.
� Component selection
� Schematic
� Simulation
� Prototyping of critical sections
� Second Design Review.
� Fabrication and Testing.

An Important OTA based Amplifier Design for amplifing neural signals paper (PDF)

Multielectrode neural recordings are becoming standard practice in basic neuroscience research, and knowledge gained from these studies is beginning to enable clinical and neuroprosthetic applications.

• Free IAS eBooks
• Free GRE eBooks
• Free MBA eBooks
• Free GATE eBooks