Littelfuse has created a three pin magnetic switch that draws only 200nA and operates at up to 50Hz. Called LF21112TMR, the detector uses a combination of TMR (tunnelling magneto-resistance) sensing and cmos processing – the output is push-pull cmos. It is an omni-polar design (diagram left), with its output high with no magnetic field (which Littelfuse calls “off” (think open-drain, ...
Sensors
The latest Electronics Weekly product news on sensors, measuring factors such as acceleration, orientation, pressure, humidity and temperature.
Inertial measurement IC with low and high range accelerometers
STMicroelectronics has introduced a 2.5 x 3mm inertial measurement IC with low (±16g) and high (±256g) range accelerometers and a gyroscope for angular rate measurement – all three-axis types. Integrated with the sensors are a machine-learning core, a finite state machine, an adaptive self-configuration block and sensor fusion processing. “Event-detection interrupts enable motion tracking and context awareness: implementing hardware recognition ...
Sensors the size of a poppy seed
A highly precise temperature sensor the size of a a poppy seed from ams OSRAM, makes the use of wearables for continuous skin measurements easier than ever. Equally miniaturised, but designed for use inside the body, are the NanEye camera modules for single-use endoscopy. The AS6223 temperature sensor is designed for compact, battery-powered devices that fit into everyday life. The ...
10MHz 50ns current sensor for GaN and SiC
Allegro MicroSystems has turned to tunnelling magnetoresistance (TMR) technology to make a 10MHz bandwidth current sensor with 50ns response time. “Our TMR technology is enabling current sensors that are ten times faster and four times lower noise versus typical Hall-based products,” according to the company, which has called it ACS37100. ACS37100 can “unlock the potential of fast-switching GaN and SiC ...
5Mpixel image sensors for automation and security
ST has announced four 5Mpixel image sensors for automated manufacturing and object tracking. The sensors are made using 3D stacking and offer both global shutter and rolling shutter modes. VD5943 monochrome bare die VB5943 monochrome BGA package VD1943 RGB-IR bare die VB1943 RGB-IR BGA package “Global and rolling shutter modes allow customers to optimise image capture, ensuring motion-artifact-free video capture ...
Infineon sampling 60Ghz CMOS radar sensors for IoT
Infineon is sampling 60 GHz CMOS radar sensors for ultra-low power IoT applications. The Infineon XENSIV BGT60CUTR13AIP aims to become a key sensor for Physical AI to increase the intelligence of smart home and IoT devices. The sensor supported by Infineon hardware and software, third-party modules, and transferable FCC certification to aid fast-time-to-market. The family includes on-chip processing powered by ...
SPS 2025: 0.01°optical encoder IC
iC-Haus will demonstrate its latest 26bit resolution optical encoder IC at SPS next month in Nuremberg. iC-RT2624, as it will be known, is aimed at both housed and kit encoders, and will achieve its 26bit resolution using interpolation with standard 26mm code discs, the company claims “even in demanding, dynamic applications”. AB quadrature and Z outputs are available as is, ...
Dual-input inductive auto sensor IC
Melexis has brought out a dual-input inductive sensor integrated circuit (IC). The device simultaneously processes signals from two sets of coils to compute differential or vernier angles on-chip. This sensor is designed for automotive applications, particularly in systems such as steering torque feedback, steering angle sensing, or steering rack motor control (including steer-by-wire implementations). The increasing complexity of vehicle control ...
±1.5°C four-Channel thermocouple measurement IC
Microchip has created a four-channel thermocouple measurement IC with ±1.5°C accuracy. “MCP9604 delivers accuracy at four thermocouple locations by using higher-order NIST ITS-90 equations rather than the single-order linear approximations of analog amplifier designs,” according to the company. “As an example, it achieves ninth-order accuracy with K-type thermocouples, all in one integrated chip containing the ADCs, cold junction compensation temperature ...
Thermistor input added to ASIL C current-voltage sensors
Melexis has added a thermistor input to two of its combined current and voltage sensors. MLX91230KDC-BBC-200-RE is a ±512mT Hall-based sensor and comes in an SOIC8 MLX91231KGO-BBC-000-RE is a -100mV to +256mV shunt sensor and comes in a TSSOP16 “The integration of the NTC input into the MLX91230 and MLX91231 sensors improves the detection of variations in system temperatures. For ...
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