A Cryo-CMOS SAR ADC With FIA Sampling Driver Enabled by Cryogenic-Aware Back-Biasing

This paper presents a floating inverter amplifier (FIA) that performs high-linearity amplification and sampling while driving a 2<inline-formula> <tex-math notation="LaTeX">$\times$</tex-math> </inline-formula> time-interleaved (TI) SAR ADC, operating from room temperature (RT) down to 4.2 K. The power-efficient FIA...

A 280μW dynamic-zoom ADC with 120dB DR and 118dB SNDR in 1kHz BW

Micro-power ADCs with high linearity and dynamic range (DR) are required in several applications, such as smart sensors, biomedical imaging, and portable instrumentation. Since the signals of interest are then often small (tens of μν) and slow (<1kHz BW), such ADCs should also exhibit low offset and flicker noise. Noise-shaping SAR [1] and...

A 280 μW Dynamic Zoom ADC With 120 dB DR 118 dB SNDR in 1 kHz BW

This paper presents a dynamic zoom analog-to-digital converter for use in low-bandwidth (<1 kHz) instrumentation applications. It employs a high-speed asynchronous successive approximation register (SAR) ADC that dynamically updates the references of a fully differential Δ Σ ADC. Compared to previous zoom ADCs,...