Logarithmic Voltage-to-Time Converter for Analog-to-Digital Signal Conversion

1. Front Matter

   Pages i-xxi

   PDF

2. Introduction

   • Mauro Santos, Jorge Guilherme, Nuno Horta

   Pages 1-10

3. Nonlinear A/D Converters

   • Mauro Santos, Jorge Guilherme, Nuno Horta

   Pages 11-36

4. Logarithmic ADC

   • Mauro Santos, Jorge Guilherme, Nuno Horta

   Pages 37-58

5. Logarithmic VTC Design

   • Mauro Santos, Jorge Guilherme, Nuno Horta

   Pages 59-73

6. Circuit and Layout Level Validation

   • Mauro Santos, Jorge Guilherme, Nuno Horta

   Pages 75-94

7. Evaluation of the Prototype

   • Mauro Santos, Jorge Guilherme, Nuno Horta

   Pages 95-109

8. Future Work and Conclusions

   • Mauro Santos, Jorge Guilherme, Nuno Horta

   Pages 111-117

This book presents a novel logarithmic conversion architecture based on cross-coupled inverter. An overview of the current state of the art of logarithmic converters is given where most conventional logarithmic analog-to-digital converter architectures are derived or adapted from linear analog-to-digital converter architectures, implying the use of analog building blocks such as amplifiers. The conversion architecture proposed in this book differs from the conventional logarithmic architectures. Future possible studies on integrating calibration in the voltage to time conversion element and work on an improved conversion architecture derived from the architecture are also presented in this book.

• Total transconductance
• Sampling capacitors
• Voltage-to-time conversion elements
• Programmable delay block
• Input range limitation
• logarithmic signal conversion

• Synopsys Portugal Lda, Porto Salvo, Portugal

  Mauro Santos

• Instituto de Telecomunicações, Instituto Politecnico Tomar, Lisbon, Portugal

  Jorge Guilherme

• Instituto de Telecomunicações, Instituto Superior Técnico, Lisbon, Portugal

  Nuno Horta

Mauro Santos (IEEE S'08-M'18) concluded his PhD from Instituto Superior Tecnico, Lisbon in 2018 in the area of microelectronics. His research interests are mainly in analog-to-digital signal conversion, analog and mixed signal IC design and power electronics.

Jorge Manuel Guilherme is a professor at the Instituto Politecnico Tomar since 1996. He works at the Integrated Circuits Group of Instituto de Telecomunicações since 2004. His scientific interests are in the areas of microelectronics, data conversion and power management.
Nuno Horta (S’89–M’97–SM’11) is an Associate Professor at IST Electrical and Computer Engineering Department. He is a Senior Researcher at Instituto de Telecomunicações, where he is the head of the Integrated Circuits Group. His research interests are mainly in analog and mixed-signal IC design, analog IC design automation, soft computing and data science.

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