Your task is to investigate the design of the electronic elements of an analogue sound level meter. The objective is to produce a design for a system that meets as high a grade of the standards specified in this document as possible, as effectively as possible. The instrument is to be powered by two standard PP3 style batteries (6F22) with battery life and system operation at the end of battery life as important performance indicators.
You must work collaboratively in a group to produce a functional simulation prototype of a complete system using the System Modelling Blocks contained within the Mentor Graphics software. Using this high-level prototype you should characterize the system and determine the requirements specification for each element. Each member of the group should then individually design and simulate a component level circuit for at least one of the system blocks such that the overall functionality of your system is maintained when it is substituted into the original prototype design. These individual component level designs should then be combined to give a complete design at the component level. Allowable components include operational amplifiers but NOT special purpose function chips such as rms-to-dc converters!
The work must be submitted in the form of a group report with the individual block design responsibilities clearly identified. Marks will be awarded according to the following criteria:
• the overall system specification and performance (group)
• the quality of the evaluation of circuit options, the rationale for the implementation selected and its performance relative to the specification (individual)