Author Archives: steve bush

Small rotary switches are tough for industry and agriculture

Elma MR50 rotary switches are small yet robust for compact control panels and portable devices in building site machinery, vehicles and agricultural applications. Operation is across -45 to +85°C (IEC 60068-2-14), front ingress protection is IP60 (IP68 option) and 10Grms vibration resistance is specified (10 to 2kHz MIL-STD-202G method 214A condition 1/C). “The market for ...

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Wall-mount 20-30W medical-grade power adaptor

TrumPower has created a range of wall-plug power supplies for medical use. Called TM30W, there is a choice of 10 set output voltages between 5 and 48Vdc, at 20 – 30W depending on voltage (30W at 12V and above). A choice of mains plug interfaces, or an interchangeable version, allow the PSUs to fit UK, European ...

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ISSCC 2021: Integrated GaN gate drive switches mains power at >100V/ns

GaN power transistors are becoming the gold standard for fast compact mains power switching – GaN HEMTs have no reverse recovery charge and can be designed with low on-resistance and low parasitic capacitance. However, their gates are fussy, and unbelievably fussy if all available speed is to be squeezed from this technology. Inappropriate gate drive ...

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ISSCC 2021: THz chip spots objects in three dimensions

Princeton University has found a way to determine the direction to an object in three dimensions using only on-chip THz antennas with ~2°accuracy. It exploits frequency-dispersive leaky-wave antennas – end-fed strips, 1.7mm long, with transverse slots spaced at 43μm intervals. The crucial property of these, is that injecting a frequency between 360 and 400GHz into ...

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ISSCC 2021: Cryogenic CMOS for quantum computing

Quantum computing might be all about qubits, but something has to set up those qubits, nurture them, then take their decisions away once they have settled. With only a handful of qubits, it was possible to lead signals in from the outside world but, as qubit counts climb, good old reliable CMOS has been asked ...

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ISSCC2021: Artificial intelligence chips

At ISSCC a session was set aside for nine papers on machine leaning (ML) processors. This was a packed session, with nine papers, on chips from 5nm and 7nm processors for mobile and cloud use, to ultra-low-power application-specific accelerators for wearables. IBM and Samsung both presented ML processors for phones, where local AI processing will ...

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ISSCC 2021: Capacitance to digital conversion on 0.3Vcc and

The National University of Singapore and Politecnico di Torino teamed up at ISSCC 2021 to describe a capacitive sensor interface designed to run from harvested energy, needing only a supply voltage between 300mV and 1.8V to produce an output accurate to seven bits, and consuming 1.4nJ per conversion. Not only that, but it needs no ...

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High-side current monitor is accurate for automotive

Microchip has introduced some high-side automotive current sense amplifiers, claiming that they have the lowest offset for AEC-Q100 Grade 0 qualified parts. Called MCP6C02, the Grade 0 part comes in a 3 x 3mm 8 pin VDFN package with wettable flank plating and has a maximum offset error of ±12µV, while the 6pin SOT-23 version is ...

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Significant digital processors at ISSCC 2021

The IEEE International Solid-State Circuits Conference, known as ISSCC, is the worlds showcase for state-of-the-art on-chip circuit developments, both analogue and digital. Held annually at this time of year, it is usually held physically in San Francisco, allowing engineer to rub shoulders and network as well as learn. This year only, hopefully, ISSCC has gone ...

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Significant 5G and radar chips at ISSCC 2021

The IEEE International Solid-State Circuits Conference, known as ISSCC, is the worlds showcase for state-of-the-art on-chip circuit developments, both analogue and digital. Held annually at this time of year, it is usually held physically in San Francisco, allowing engineer to rub shoulders and network as well as learn. This year only, hopefully, ISSCC has gone ...

This story continues at Significant 5G and radar chips at ISSCC 2021

Or just read more coverage at Electronics Weekly