A 10.5 μW Programmable SAR ADC Frontend With SC Preamplifier For Low-Power IoT Sensor Nodes


Massive deployment of wireless autonomous sensor nodes requires their lifetime extension and cost reduction. The analog frontend (AFE) plays a key role in this context. This paper presents a successive approximation register analog-to-digital converter (SAR ADC) with a switched-capacitor programmable gain switched preamplifier (SC PGSA), as a basic component of an integrated ultra-low power AFE... » read more

Fast And Accurate Variation-Aware Mixed-Signal Verification Of Time-Domain 2-Step ADC


To meet today’s analog-to-digital converter (ADC) specifications and to produce a high-yield design, teams typically need to perform extensive brute force mixed-signal simulations to account for all potential design variation. However, at nanometer nodes, the number of process, voltage and temperature (PVT) corners and parametric variation grow exponentially making the simulation impractical ... » read more

Low-Power Analog


Analog circuitry is usually a small part of a large SoC, but it does not scale in the same way as digital circuitry under Moore's Law. The power consumed by analog is becoming an increasing concern, especially for battery-operated devices. At the same time, little automation is available to help analog designers reduce consumption. "Newer consumer devices, like smartphones and wearables, alo... » read more

Analog: Avoid Or Embrace?


We live in an analog world, but digital processing has proven quicker, cheaper and easier. Moving digital data around is only possible while the physics of wires can be safely abstracted away enough to provide reliable communications. As soon as a signal passes off-chip, the analog domain reasserts control for modern systems. Each of those transitions requires a data converter. The usage ... » read more

Reducing Data At The Source


Jens Döge, group manager for image acquisition and processing in Fraunhofer IIS’ Engineering of Adaptive Systems Division, talks about how to slash the amount of data that needs to be sent to the cloud or edge for processing by focusing only on the regions of interest in an image, and how that reduces the cost of moving that data. » read more

Power/Performance Bits: Nov. 11


Smaller DACs and ADCs Researchers at the National University of Singapore invented a novel class of Digital-to-Analog (DAC) and Analog-to-Digital Converters (ADC) that use a fully-digital architecture. This digital architecture means design time for sensor interfaces can be reduced from months to hours with a fully-automated digital design methodology, the team said. It also has the benefit... » read more

The Industrial Internet Of Things Relies On ADCs


We have all heard the news stories and read the market reports—the Industrial Internet of Things is changing industry as we know it. The move towards industrial systems becoming connected intelligent devices is happening all around us. In connected factories, there are three critical requirements: Large bandwidth communication channels Fast data processing Accurate decision inte... » read more

Ultra-Low-Power SAR ADC in 22 nm FD-SOI Technology Using Body-Biasing


Today’s sensor applications show a rising demand on miniaturized autonomous sensors nodes with extreme requirements on power dissipation. One core functionality of these sensor nodes is the conversion of analog sensor signals to digital data for post processing and data communication. In this work a 11-bit Successive Approximation Register (SAR) ADC with minimized power dissipation is develop... » read more

Data Converters For Automotive Applications


Sensor applications requiring data converters range from temperature sensors identifying different engine status to radar/LIDAR enabling Automotive Driver Assistance Systems (ADAS). Other applications involving data converters include wireless transceivers for communicating with other vehicles or with a fixed network. The data converter IP (analog-to-digital and digital-to-analog) provides an i... » read more

In Search Of Life On The Exoplanets


Space exploration is a constant driver of scientists around the world, searching for life on planets outside our solar system (exoplanets). The news is often filled by wondrous discoveries and promising leads that point to potential life outside of Earth. This search often depends on a key piece of technology – the analog-to-digital converter (ADC) that accurately maps analog imaging to a dig... » read more

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