Low-Offset Band-Pass Signal Shaper with High Time Resolution in 40 nm CMOS Technology

State-of-the-art readout integrated circuits (ROICs) operating in particle-counting mode are gravitating toward high time resolution, low-noise, and low-power analog readout frontends to detect and register the arrival time of charge signals with a high accuracy. To achieve a time resolution of a few nanoseconds, an intermediate stage, known as...

Experimental Qualification of a Low-Noise Charge-Sensitive ROIC with Very High Time Resolution

Small charge detection is used for a wide range of applications: advanced industrial process control, experimental physics and space instruments, and material testing and medical imaging. These applications give rise to the development of a wide variety of charge-sensitive readout integrated circuits (ROICs). The trend in the state-of-the-art...

High Time Resolution, Low-Noise, Power-Efficient, Charge-Sensitive Amplifier in 40 nm Technology

Particle detection circuits are used for a wide range of applications from experimental physics to material testing and medical imaging. In the state-of-The-Art systems, the trend is to design low-noise and low-power readout front-end electronics with a low detection error rate and small silicon area occupation. This paper presents the design...

Power-Efficiency Evolution of Capacitive Sensor Interfaces

Recent years have witnessed an improvement in the energy efficiency of capacitive sensor interfaces by more than three orders of magnitude. This article reviews the architectural and circuit innovations that have contributed to this progress. The fundamental limit on the energy consumption of capacitive sensor interfaces is discussed, as well...

An Energy-Efficient 3.7-nV/√ Hz Bridge Readout IC With a Stable Bridge Offset Compensation Scheme

This paper describes an energy-efficient bridge readout IC (ROIC), which consists of a capacitively coupled instrumentation amplifier (CCIA) that drives a continuous-time delta–sigma modulator (CTM). By exploiting the CCIA’s ability<br/>to block dc common-mode voltages, the bridge’s bias voltage may exceed the ROIC’s supply voltage, allowing...

A 117DB in-Band CMRR 98.5DB SNR Capacitance-to-Digital Converter for Sub-NM Displacement Sensing with an Electrically Floating Target

This paper describes a high-performance Capacitance-to-Digital Converter (CDC) for sub-nm displacement sensing with an electrically floating target. Intended to be integrated into a displacement sensor probe, the CDC consumes only 560μW. It achieves 98.5dB SNR in a 1ms conversion time, which is 34 times more energy-efficient than the prior...