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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Gutierrez, E. Hernandez, L. |
| Copyright Year | 2015 |
| Description | Author affiliation: Electron. Technol. Dept., Carlos III Univ., Madrid, Spain (Gutierrez, E.; Hernandez, L.) |
| Abstract | The analytical formulation of the output DFT of an oversampled converter based on a VCO has been recently disclosed for the single-bit case. However, most practical VCO-ADCs are constructed with a multibit configuration using a multiphase ring oscillator architecture. This paper shows that the spectral properties of a single-bit VCO-ADC are retained in the multibit case if an equivalent model is employed. This means that similar equations used to study the performance of single-bit ring oscillator can also be applied to the multibit case. Also, a multibit PFM-ADC has been proposed as an alternative to a conventional VCO-ADC, showing differences in the output spectrum respect to the VCO-ADCs based on ring oscillators. This paper describes these differences and how to apply the previous equations to study the PFM-ADC architecture. |
| Starting Page | 1258 |
| Ending Page | 1261 |
| File Size | 1342244 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479983919 |
| DOI | 10.1109/ISCAS.2015.7168869 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-05-24 |
| Publisher Place | Portugal |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Voltage-controlled oscillators Mathematical model Ring oscillators Discrete Fourier transforms Dynamic range Frequency modulation Spectral Analysis Data Conversion Sigma-Delta Modulation Pulse Frequency Modulation |
| Content Type | Text |
| Resource Type | Article |
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