University of Illinois Urbana-Champaign

Delta-Sigma Frequency Determinator for Temperature Sensor Applications

Zhu, Yi

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https://hdl.handle.net/2142/97841

Description

Title
Delta-Sigma Frequency Determinator for Temperature Sensor Applications
Author(s)
Zhu, Yi
Contributor(s)
Hanumolu, Pavan K.
Issue Date
2016-12
Keyword(s)
  • delta-sigma ADC
  • discriminator
  • temperature sensor
Abstract
This research intends to achieve a high-resolution data conversion with low-cost and small-area technologies for temperature sensor applications. In order to obtain high-resolution data from frequency-based temperature sensors with a low-cost and small-area implementation, a delta-sigma frequency discriminator technique is used to replace the traditional analog-to-digital converter approach to convert analog signals from dual oscillators. While some conventional analog-to-digital converters convert the amplitude of incoming signals, discriminators modulate incoming frequency and are therefore suitable for this type of application. This research uses Verilog-AMS to implement a first-order discriminator using a DMD (dual modulus frequency divider) and a D flip-flop. An output frequency with high resolution can be obtained by oversampling and decimating an output bit steam from the discriminator. This low-cost technique presents an accurate frequency conversion while it may present a relatively high quantization noise with a first-order implementation. The simulation results and detailed analysis will be addressed in this thesis.
Type of Resource
text
Language
en
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http://hdl.handle.net/2142/97841

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