Skip to main content
Article thumbnail
Location of Repository

Continuous-Time Σ ∆ Modulators With VCO-Based Voltage-to-Phase and Voltage-to-Frequency

By Mootaz Allam, Hassan Aboushady and Marie-minerve Louerat


Abstract — In this paper, two different VCO-Based quantizers architectures are implemented and compared as multi-bit quantizers of Continuous-Time (CT) Sigma-Delta (Σ∆) modulator. The first one is the voltage-to-frequency while the second is the voltage-to-phase architecture. Two 4 th order CT-Σ ∆ modulators are designed with Voltage-to-frequency and voltage-tophase quantizers respectively. Both modulators are designed and simulated in 0.13µm technology. The comparision shows that voltage-to-phase quantizer remarkably reduces the VCO nonlinearity and increases the modulator’s maximum SNR. Fig. 1. quantizer. Continuous-Time Σ ∆ modulator with VCO-based time-domain I

Year: 2013
OAI identifier: oai:CiteSeerX.psu:
Provided by: CiteSeerX
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • (external link)
  • (external link)
  • Suggested articles

    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.