Widely Adjustable Ring Oscillator Based ΣΔ ADC

  • Armin Tajalli
  • Yusuf Leblebici


Over-sampling scheme in addition to the noise shaping property of Δ∑ architectures, makes it very suitable for implementing high resolution data converters. In addition, this architecture exhibit low sensitivity to the non-ideality behavior of analog circuits, such as limited gain of amplifier, device mismatch, and offset of amplifier [1, 2]. This property is specially desirable in design of low-cost and high-performance mixed-signal circuits in modern CMOS technologies.


Ring Oscillator Delay Cell Delay Element Noise Transfer Function Noise Shaping 
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© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Microelectronic Systems Lab. (LSM)Ecole Polytechnique Fédérale de Lausanne (EPFL)LausanneSwitzerland

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