Function of analog electronics

The objective of this course unit is to enable students to acquire the fundamental concepts of analog electronics.

The first part is dedicated to linear analog electronics used for conditioning and processing information, particularly from sensors.

The second part focuses more specifically on the internal structure of the operational amplifiers used in the first part, with a study of the internal architecture of amplifier circuits based on bipolar transistors.

• Acquire the skills to study linear circuits based on components or active circuits for a synthetic approach to them, and the use of associated computer tools.
• Know how to choose the models and tools best suited to the studies to be carried out and understand their limitations.
• Know the basic circuits of analog electronics.
• Know how to design, analyze, and build simple linear circuits based on active components or active circuits such as OPAs.
• Acquire a scientific and rigorous approach to the studies carried out

Master electrokinetics and related mathematical tools such as limited developments, Fourier and Laplace transforms, and matrix calculus.

Implementation of simple algorithms

Linear electrical circuits:

General information, Input and output impedances, Quadripoles

Systematic methods for circuit analysis: modified nodal analysis (MNA).

Operational Amplifier:

Ideal model, finite gain model, 1-pole. Input impedance, output impedance, offset current, and offset voltage.

Linear electronic functions based on operational amplifiers: adder, subtractor, integrator. Derivative, amplification.

Performance and limitations of these operational amplifier-based circuits: stability, gain-bandwidth product, slew rate.

Analog Filtering:

Analog filtering, transfer function synthesis (polynomial filters)

Active filters: Sallen Key, Rauch, universal filters.

Sensors and sensor packaging

General information about acquisition chains

Active packaging

Packaging of passive sensors

Instrumentation amplifier

Diodes & Transistors

Low-frequency static and dynamic characteristics

Amplifier circuits for low-frequency small signals (common emitter, common collector, common base, differential pair, and current mirror).

The purpose of this section is to understand the simplified structure of an operational amplifier, to justify the low bandwidth of an op-amp (compensation), and to understand the slew rate.

Push-pull in connection with the power amplifier function, application for µC output. (Amplifier class A AB C not included in the program)