Jorge de la Torre
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Jorge de la Torre has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Javier Fernandez
Electronics Technology Department, Carlos III University, 28911 Madrid, Spain
1 shared publication - Javier Granizo
Electronics Technology Department, Carlos III University, Madrid, Spain
1 shared publication - Luis Hernandez
Electronics Technology Department, Carlos III University, Madrid, Spain
1 shared publication - Ruben Garvi
Electronics Technology Department, Carlos III University, Madrid, Spain
1 shared publication
Latest Publications
- Open Access
- 26 May 2026
- Published by MDPI AG in Electronics
- Vol. 15 (11) , 2299
Noise Optimization of VCO-ADCs Based on Ring Oscillators with Cascoded Inverter Delay Cells
A key component of VCO-ADCs is the ring oscillator, which determines the circuit and quantization noise of the converter. The input-referred thermal and flicker noise of a VCO-ADC stems from the VCO driver source and the VCO phase noise. On the other hand, quantization noise depends on the oscillation frequency of the VCO with respect to the sampling frequency. An optimal VCO-ADC design should balance oscillation frequency with flicker and thermal contributions of the VCO. In this paper, we show a simple modification of the conventional stages used in VCO-ADC ring oscillators. The modification consists of including two extra transistors in series, isolating the inverter from the power rails when switching. This modification allows one to significantly increase the oscillation frequency while having similar phase noise contributions compared to other ring oscillator architectures with the same area and power.
- 26 May 2026
- Published by MDPI AG in Electronics
- Vol. 15 (11) , 2299
Open AccessNoise Optimization of VCO-ADCs Based on Ring Oscillators with Cascoded Inverter Delay Cells
A key component of VCO-ADCs is the ring oscillator, which determines the circuit and quantization noise of the converter. The input-referred thermal and flicker noise of a VCO-ADC stems from the VCO driver source and the VCO phase noise. On the other hand, quantization noise depends on the oscillation frequency of the VCO with respect to the sampling frequency. An optimal VCO-ADC design should balance oscillation frequency with flicker and thermal contributions of the VCO. In this paper, we show a simple modification of the conventional stages used in VCO-ADC ring oscillators. The modification consists of including two extra transistors in series, isolating the inverter from the power rails when switching. This modification allows one to significantly increase the oscillation frequency while having similar phase noise contributions compared to other ring oscillator architectures with the same area and power.