| Topic |
Sub-topic |
| Unit 1: Introduction |
Analog systems for signal acquisition:
Architectures. Functional block diagrams.
Feedback:
Definition. Topologies. Series-Parallel feedback.
Through this unit the competencies CB4, CB5, CG4, CG8, CE12 and CE14 are developed.
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| Unit 2: Auxiliary circuits |
Sensors and signal conditioners:
Sensors: Definition and classification.
Signal conditioners for resistive sensors: The voltage divider. Wheatstone bridge. Other conditioning circuits.
Linearization circuits. Level-shifting circuits: DC level shifter and gain calibration. Precision rectifiers: Half-wave rectifiers and full-wave rectifiers.
Voltage references and current sources:
Voltage references: Introduction. Performance specifications. Basic circuit. Self-regulated circuit. Thermal stabilization.
Voltage-to-current converter circuits: Introduction. Floating-load converters. Grounded-load converters.
Analog Switches and Multiplexers
Switches: Definition. Types. Applications. Commercial devices.
Multiplexers: Definition. Types. Specifications.
Through this unit the competencies CB4, CB5, CG4, CG8, CE12 and CE14 are developed. |
| Unit 3: Amplification in signal acquisition systems |
Instrumentation amplifiers:
Introduction. Definition and ideal characteristics. Real model. Basic configurations. Specifications. Functional block diagram. Applications. Commercial amplifiers and their data sheets.
Programmable amplifiers:
Introduction. Types. Pin Programmable Gain Amplifier. PGA: Programmable Gain Amplifier. Commercial amplifiers and their data sheets.
Isolation amplifiers:
Introduction. Classification criteria. Types: capacitive coupled, transformer coupled, and optically coupled. Basic structure. Applications and limitations. Examples. Commercial amplifiers and their data sheets.
Through this unit the competencies CB4, CB5, CG4, CG8, CE12 and CE14 are developed. |
| Unit 4: Active filters |
introduction:
Fundamentals. Basic filter types. Real parameters.
Description by transfer function:
Introduction. Transfer function: poles and zeros, stability analysis and frequency response. First order and second order filters.
Approximation of filter transfer function:
Steps in the realization of active filters. Filter specifications. Mathematical approximation of the characteristic function. Transfer function normalization. Transfer function normalization. Transformation from one type of filter into another. Polynomial approximations: Butterworth and Chebyshev.
Synthesis:
Introduction. Methods. Direct design. Basic topologies of direct synthesis: voltage control voltage source (KRC or Sallen-Key) and Multiple Feedback (MFB). Cascade design. Comparison of methods. Scaling.
Through this unit the competencies CB4, CB5, CG4, CG8, CE12 and CE14 are developed. |
| Unit 5. Sample-and-hold circuits. Digital-to-analog and analog-to-digital converters |
Sample-and-hold circuits:
Background. Specifications. Architectures. Commercial devices.
Digital-to-analog converters:
Introduction. Fabrication parameters. Errors. Linear resistive network. Weighted resistive network. R-2R resistor ladder network.
Analog-to-digital converters:
Introduction. Fabrication parameters. Errors. Full-flash converters. Semi-flash converters (sub-ranging). Pipeline converters. Integrating converters: single or double analogue slope. Successive approximation converters. Commercial devices.
Through this unit the competencies CB4, CB5, CG4, CG8, CE12 and CE14 are developed. |
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| Práctica 1: Circuítos auxiliares. |
Montaxe e verificación dun circuíto que se comporta como fonte de tensión de referencia. Montaxe e verificación dun circuíto que se comporta como fonte de corrente.
Nesta práctica traballaranse as competencias CB4, CB5, CG4, CG8, CE12 e CE14. |
| Práctica 2: Amplificador de instrumentación. |
Montaxe e análise dun amplificador de instrumentación baseado en tres operacionais a partir de compoñentes discretos. Montaxe e análise dun amplificador de instrumentación comercial con ganancia axustable por potenciómetro.
Nesta práctica traballaranse as competencias CB4, CB5, CG4, CG8, CE12 e CE14. |
| Práctica 3: Filtros activos. |
Montaxe dun filtro activo. Identificación da topoloxía, a orde, e o tipo de filtro. Cálculo a súa frecuencia de corte teórica. Comprobación da súa resposta en frecuencia utilizando o xerador de funcións e o osciloscopio. Representar a magnitude da resposta en frecuencia do filtro (diagrama de magnitude de Bode).
Nesta práctica traballaranse as competencias CB4, CB5, CG4, CG8, CE12 e CE14. |
Práctica 4: Sistema de medida dunha variable física baseada nun sensor comercial.
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Deseño do circuíto de acondicionamento dun sistema de medida baseado nun sensor comercial a partir dos circuítos utilizados e as habilidades adquiridas nas prácticas previas.
Nesta práctica traballaranse as competencias CB4, CB5, CG4, CG8, CE12 e CE14. |
| Práctica 5: Estimación e análise dos parámetros característicos dunha tarxeta de adquisición de datos comercial. |
Estimación dos devanditos parámetros nas canles de entrada/saída analóxicos/dixitais dunha tarxeta de adquisición de datos comercial.
Nesta práctica traballaranse as competencias CB4, CB5, CG4, CG8, CE12 e CE14.
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