A high-resolution self-timed zero-crossing-based Incremental ?? ADC

This thesis discusses the d es ign and verification of a high-resolution self-timed incremental ?? ADC. The first self-timed incremental ?? ADC was presented by C.Chen et.al at ISSCC 2013 and this work targets to improve the resolution, linearity and energy-efficiency of a self-timed ADC. Unlike conventional ?? ADCs, a self -timed ADC is capable...

Design of an Energy-Efficient Interface Circuit for a MEMS-based Capacitive Pressure Sensor

This thesis presents an incremental ?? capacitance-to-digital converter (CDC) that serves as an interface circuit for a MEMS-based pressure sensor. The thesis presents a systematic analysis of the CDC and compares different CDC architectures. A novel non-linear CDC is also proposed and analysed. Energy-efficiency of the CDC is improved by...

A 6.3 μW 20 bit Incremental Zoom-ADC with 6 ppm INL and 1 μV Offset

A 20-bit incremental ADC for battery-powered sensor applications is presented. It is based on an energy-efficient zoom ADC architecture, which employs a coarse 6-bit SAR conversion followed by a fine 15-bit ΔΣ conversion. To further improve its energy efficiency, the ADC employs integrators based on cascoded dynamic inverters for extra gain and...