# Structured Design - 1: end terms#

This course discusses the theory and the application of basic structured design techniques to the design of application-specific amplifiers with operational amplifiers.

## What you will know at the end of this course#

You will know the characteristic properties of amplifiers and you will be able to derive the functional requirements for amplifiers from their application:

The input and output impedance

The signal transfer from source to load

The port isolation requirements

You are able to model and characterize the non-ideal behavior of amplifiers and you will know to derive performance requirements from the application description:

The small-signal noise behavior

The small-signal dynamic behavior

The static nonlinear behavior

The dynamic nonlinear behavior

The influence of temperature and ageing

You will know about other relevant design aspects of amplifiers such as:

Environmental conditions

Cost factors

You will be able to design low-noise and power efficient amplifier structures for arbitrary port impedance and port isolation requirements with the aid of feedback techniques, balancing techniques and isolation techniques:

Direct feedback and indirect (model-based) feedback

Nonenergic feedback, passive feedback and active feedback

Balancing and port isolation techniques

You are able to relate the properties of the components in the feedback network to important performance aspects and costs factors of the amplifier:

Inaccuracy

Noise

Nonlinearity

Power dissipation

Area

Costs

You are able to model individual performance aspects of voltage-feedback and current-feedback operational amplifiers:

Equivalent-input voltage and current noise sources

Equivalent-input voltage and current offset sources

Equivalent-input bias sources

Gain and input and output impedances, including their dynamic behavior

PSRR and CMRR

You know about other relevant performance aspects of operational amplifiers, such as:

Input voltage range

Output voltage and current drive capability

Voltage slew rate

You know in which way and to what extent the equivalent input noise sources of the feedback network affect the noise performance of a negative feedback amplifier.

You know in which way and to what extent the equivalent input noise sources of the controller (operational amplifier) affect the noise performance of a negative feedback amplifier.

You can apply the asymptotic-gain negative feedback model to derive budgets for the gain-bandwidth product of the operational amplifier:

Loop gain-poles product

You are able to evaluate the frequency response stability of a negative feedback amplifier:

Routh array

Nyquist stability criterion

Root locus technique

You can apply frequency compensation techniques to achieve the desired dynamic response of an amplifier:

Phantom-zero compensation

Pole-splitting by means of pole-zero canceling

Resistive broadbanding

Phase marging correction with lag and lead networks