2005
DOI: 10.1109/jssc.2005.852042
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A time-based energy-efficient analog-to-digital converter

Abstract: Dual-slope converters use time to perform analog-to-digital conversion but require 2 N +1 clock cycles to achieve N bits of precision. We describe a novel algorithm that also uses time to perform analog-to-digital conversion but requires 5N clock cycles to achieve N bits of precision via a successive sub-ranging technique. The algorithm requires one asynchronous comparator, two capacitors, one current source, and a state machine. Amplification of two is achieved without the use of an explicit amplifier by simp… Show more

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Cited by 73 publications
(44 citation statements)
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References 34 publications
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“…The power consumption of a complete hearing aid system mainly comes from AD/DA converter and the processor core. The power consumption of state-of-the-art A/D converters can be obtained from [11], as being 0.21 mW, at a 16-bit sampling rate of 16 KHz and 90 dB maximum SNR. As D/A is a part of A/D [11], the upper bound of the total power consumption of two A/Ds and one D/A is assumed to be 0.63 mW.…”
Section: Processor Prototype and Basic Designmentioning
confidence: 99%
“…The power consumption of a complete hearing aid system mainly comes from AD/DA converter and the processor core. The power consumption of state-of-the-art A/D converters can be obtained from [11], as being 0.21 mW, at a 16-bit sampling rate of 16 KHz and 90 dB maximum SNR. As D/A is a part of A/D [11], the upper bound of the total power consumption of two A/Ds and one D/A is assumed to be 0.63 mW.…”
Section: Processor Prototype and Basic Designmentioning
confidence: 99%
“…A detailed noise analysis of a TDM-PWM based system like WINeR-5 can be found in [7]. In such systems it is more straightforward to define noise as the undesired changes in the PWM duty cycle, DD [20]. In this paper, we mainly focus on the Tx noise, followed by the overall system noise measurements.…”
Section: Noise Measurementsmentioning
confidence: 99%
“…Traditionally, information has been processed and encoded in the voltage/amplitude domain; however, more recently the encoding of information in time has gained considerable popularity [23] and [6]. Time mode signal processing involves encoding the information in the form of time difference variables using phase modulation.…”
Section: Introductionmentioning
confidence: 99%