Level 3 BTEC Unit 57 - Principles and
Applications of Analogue Electronics
Unit Information
Credit value: 10
This unit will provide learners with an understanding of analogue electronics and the skills
needed to design, test and build analogue circuits.
The BTEC specification for this unit can be found here.
On completion of this unit a learner should:
1. Understand the principles of gain and loss and the function of amplifiers in analogue circuits
2. Understand the operation of analogue electronic circuit systems and their components
3. Be able to use computer-based techniques to design and test analogue electronic circuits for
specified functions
4. Be able to build and test an analogue electronic circuit.
Assessment
This unit has 3 Assignments:
1. Assignment 1 - Decibels and Noise (P1, P7, P8, M3)
2. Assignment 2 - Types of Amplifiers (P2, P3, M1)
3. Assignment 3 - Analogue Circuit Devices & Circuit Simulation (P4, P5, P6, M2, D1, D2)
 To review your unit progress, refer to the unit tutor's tracking sheet.
Topics covered by Lesson
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Sources of Electronic Noise
 The decibel (dB) or another decibel site here
Types of Amplifier and Classes of Amplifier are both discussed in detail on these links.
 Class A, B, C, AB is another explanation of the amplifier classes.
Effects of feedback
 Negative feedback
 Positive feedback
Efficiency, Input and Output Impedances
Analogue Circuits Devices
 Operational Amplifiers
 Op Amps - Flash
 Op Amps - Notes
 National Semiconductor's Op Amp Part selector
 741 Datasheet
 321 Datasheet
 National Semiconductor's Application Note 4
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National Semiconductor's Application Note 20
Weighted Resistor DAC
Oscillator Circuits
Analogue Switches
 Selecting the Right CMOS Analogue Switch or try this webinar
 ADG411/412/413 Datasheet
 ADG442/442/444 Datasheet
 Applications of analogue switched include sample and hold and multiplexer / demultiplexer circuits.
555 Timers
 The 555 timer circuit operation explained or try here for a different overview
 A circuit animation can be found here
 555 timer component calculator
 A selection of 555 timer circuit examples
 LM555 Datasheet
Recommended Websites
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A good website for support material can be found at http://www.electronics-tutorials.ws