Author Archives: steve bush

Embedded World: Lauterbach and UltraSoC back RISC-V

Lauterbach and UltraSoC have added support for the RISC-V open-source processor architecture to their joint chip development and debug environment. “Across the industry there is rising excitement about the emergence of RISC-V as an open source processor,” said UltraSoC CEO Rupert Baines. “This is especially significant in heterogeneous multi-core architectures: engineers want the choice to ‘mix ...

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MWC: CCS launches 12Gbit/s comms for unlicenced 60GHz mmWave

Cambridge Communication Systems (CCS) has launched its Metnet 12Gbit/s unlicensed 60GHz mmWave access and back-haul unit. The multi-point system is the first element in a software-defined mesh network architecture, with multiple Metnet 60GHz nodes operating as a centrally managed SDN-capable networking switch. Operating in the unlicensed 57-71GHz band, it has automated interference avoidance and low ...

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1MHz rail-to-rail op-amp draws only 55μA

Microchip’s MCP6411 operational amplifier can operate with a single supply voltage as low as 1.7V, while drawing 55μA quiescent current (max). Called MCP6411, input offset is ±1.0mV max, and both input and output operate rail-to-rail. Compensation means it is unity gain stable, and it has a gain bandwidth product of 1 MHz (typ). “The MCP6411 ...

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Embedded World: Digitally-tunable RF filters dodge spectrum congestion

The Fraunhofer Institute for Integrated Circuits IIS has developed digitally tunable and reconfigurable RF filters. In a congested spectrum “devices that send and receive data must function reliably”, said the organisation. “But with coexistence and interference issues on the rise, we can expect significant constraints and problems when it comes to transferring data. Fraunhofer IIS ...

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ISSCC: Background calibration boost for ADC

At the International Solid-State Circuits Conference in San Francisco, Analog Devices revealed a 20-bit 1Msample/s successive approximation ADC with 0.3ppm INL (integral non‑linearity). Key to this performance is a constantly-running background calibration technique that allows the ADC to process its input signal without interruption, while compensating for ageing, temperature sensitivity, package stress and PCB stress. ...

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Updated: How would you make a 10MHz scope HAT for Raspberry Pi?

There seems no end to the challenges the Raspberry Pi community has tackled with its credit-card-sized computer – there are at least two in space, plenty hidden away inside industrial equipment and loads around the globe educating children. Having spent a while recently trying to fix an ancient oscilloscope, it occurred to me that it ...

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ISSCC: 80GHz automotive radar on one chip

Could a single multi-mode radar IC fulfil the needs of: vehicle corner radars, which have to be physically small vehicle urban front radars, which need a wide field of view vehicle narrow-beam highway radars? Texas Instruments said ‘yes’ in an ISSCC paper devoted to a single‑chip 76GHz-81GHz frequency-modulated continuous wave (FMCW) radar transceiver in 45nm ...

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Small vector network analyser works up to 62MHz

Red Pitaya has launched a vector network analyser (VNA) extension for its credit-card-sized plug-in STEMlab data acquisition hardware, which works with a host PC running Windows or Linux. It covers 500kHz to 62MHz, has a typical directivity of 42dB, a dynamic range of 74dB and a noise floor at 88dBm. Features of its companion software ...

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5G comms prototype at 2018 Winter Olympics

A 5G network will be demonstrated in Gangneung, one of the city’s hosting the winter Olympics, to coincide with the games. 5G beam-emitting transmitter array antenna at Leti Running from 20 to 22 February, the 5GChampion consortium has arranged for games visitors to experience the network while riding a special bus between event venues. “Wearing ...

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ISSCC: Analogue boost for AI robot processor

Georgia Institute of Technology has used analogue processing to squeeze a 3.12Top/W (average) artificial intelligence processor onto a CMOS (55nm) chip, consuming only 690μW (1.2V), and aimed at self-teaching micro-robots that need to learn about their immediate environments. The processor is an accelerator for ‘reinforcement learning’ – a behaviourist psychology-inspired learning algorithm that mimics the ...

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