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A modified version of 12-bit tracking analog to digital converter for high-stability output tracking

N., Saad and M.A.A., Elmaleeh and J., Pahor (2007) A modified version of 12-bit tracking analog to digital converter for high-stability output tracking. In: 2007 International Conference on Intelligent and Advanced Systems, ICIAS 2007, 25 November 2007 through 28 November 2007, Kuala Lumpur.

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Abstract

In this paper a 12-bit tracking analog-to-digital converter (ADC) is designed and its performance is verified. It continuously tests the analog input signal and makes correction when necessary. The resulting digital equivalent of the analog input signal is continuously updated. The least significant bit (LSB) of this converter jumps up and down to track the analog input. The digital output therefore permanently jumps between two subsequent bits, B<sub>n</sub> and B<sub>n+1</sub>. To overcome the problem of instability in the digital output the 12-bit tracking ADC is modified by introducing the test bit B <sub>0</sub>. The test bit is designed to have a voltage equals to that of the LSB. It always sets or resets in tracking the analog value. Using this technique the digital output B<sub>1</sub> to B<sub>12</sub> of the converter is maintained stable. Test and measurements are performed in the converter circuit to demonstrate the practicality of this version. ©2007 IEEE.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Digital to analog conversion; Frequency converters; Multicarrier modulation; Networks (circuits); Testing; Analog input signals; Analog inputs; Analog values; Analog-to-digital converters; Converter circuits; Digital equivalents; Digital outputs; Least significant bits; Output tracking; Test and measurements; Analog to digital conversion
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:425
Deposited By: Dr Mohamad Naufal Mohamad Saad
Deposited On:09 Mar 2010 01:59
Last Modified:19 Jan 2017 08:27

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