Tag Archives: sensor

Last week Belgian fabless chip company Melexis announced a unique inductive sensing IC that includes a tiny transformer, drive circuit and sense circuit, so Electronics Weekly decided to have a closer look. No permanent magnet, external or internal, is needed, and external magnetic fields are rejected. MLX92442 only requires a nearby electrically conductive object for triggering. It comes in either ...

TDK has put an mems piezoelectric ultrasonic time-of-flight distance sensor inside a 3.5 x 3.5mm package along with its signal chain. “ICU-10201 offers the sensitivity required for obstacle avoidance or proximity sensing, which is used frequently in robotics, drones and robot vacuum cleaners,” according to the company. “The sensor provides millimeter-accurate range measurements to targets at distances up to 1.7m, ...

Diodes has created a trio of tiny magnetic field triggered sensors that operate from low-voltage rails between 1.1 and 2V. Called AH1899x, they have two power pads and a binary output that is either high or low depending on the local field. Packaging is a 1 x 1 x 0.4mm DFN1010-4. To save power, each includes measure-then-sleep logic and only ...

Allegro MicroSystems has introduced a pair of surface-mount current sensors that work from dc to 5MHz. Variants allow six sensitivities between 66mV/A (±20A range) and 20.3mV/A (±65A). Response time is typically 40ns. They are “fast enough for SiC and GaN protection, while also providing low-frequency content for power-conversion control”, said Allegro product manger Matt Hein. ACS37030 and ACS37032 employ dual ...

LEM and Semikron Danfoss have teamed up to monitor current in automotive silicon carbide power mosfet modules. The result is ‘Nano’, a current sensor that is compatible with Semikron’s DCM SiC power modules, which are rated at 750 or 1,200V and 200 to 1,000A. “The idea behind the Nano concept was to design a core-based current sensor that could fit ...

Würth Elektronik has shrunk a humidity sensor into a 1.5 x 1.5 x 0.5mm 5pad DFN package. Called 2525020210002, it works over 0 – 100% relative humidity, typically to within ±1.8%RH (±3.5%RHmax) over 20 – 80%. Also in the device is a -40 to +125°C temperature sensor, accurate to ±0.2°C across 0 to 60°C, and ±0.6°C over its full range. ...

Considering buying a digital camera? How about Sphere Entertainment's Big Sky camera system? STMicroelectronics makes the 316Mpixel 18K image sensor at the heart of the device...

Infineon has introduced a magnetic sensor for micron-level movement measurement. Called TLI5590-A6W, it has two TMR (tunnel magneto-resistance) Wheatstone bridges inside (see diagram), spaced 500μm apart so that they deliver sine and cosine voltages when moved relative to long magnets, or circular magnets, whose poles change every 500μm in the working direction. “Qualified for industrial and consumer applications to JEDEC ...

Lem has introduced a pair of mains residual current monitors for electric vehicle charging that have both digital and analogue outputs. One monitors single-phase live and neutral (CDSR 0.07-TP, photo right), while the other monitors three phases and neutral (CDSR 0.07-NP, photo below). “Because electric vehicles use a high voltage battery, they are also a high-power energy source. This needs ...

LEM has announced three-phase current sensors that fit silicon carbide power modules typically used in 800V vehicle traction inverters. “Developers of automotive traction inverters are increasingly using three-phase power modules such as Hybridpack Drive from Infineon, Acepak Drive from ST Microelectronics, SSDC from ON Semi, and others such as Starpower and CRRC,” according to LEM. “The current sensor offers current ...