Beamforming arrays let designers create directional microphones using MEMS devices. With the right signal processing algorithms, these can enhance the user experience delivered by many types of audio equipment. An array can be simple, comprising as few as two microphones, and can be arranged in various configurations depending on the expected location of the preferred […]
RF Switches, Part 2: Analog and MEMS switches
Part 1 of this FAQ looked at the venerable electromechanical RF switch – still widely used in some applications, where it is the only viable option – and use of PIN diodes as RF switches. This part looks at analog and MEMS-based switches. Q: What is an analog switch? A: It’s conceptually straightforward: in basic […]
MEMS inertial accelerometer now offered in ±10 g and ±50 g ranges
Silicon Designs, Inc. announced that additional new g-ranges and end-user enhancements have been added to its Model 2227 MEMS inertial accelerometer series. Initially launched in October 2018 as a strictly ±25-g product, the Series is now offered in both ±10 g and ±50 g ranges, respectively. Stock quantities of all three models are immediately available […]
Choosing the right MEMS microphone interface for your project
by Bruce Rose, CUI Inc. Micro-electro-mechanical systems (MEMS) microphones have been steadily increasing their market share, driven by the surge in popularity of voice-controlled electronics with applications like voice-enabled navigation devices and digital home assistants. But what are the different types of MEMS microphone electrical interfaces available and how do you apply them to your […]
Isolated analog amps provide accurate current measurements
Silicon Labs has introduced a family of isolated analog amplifiers, voltage sensors and delta-sigma modulator (DSM) devices designed to provide accurate current and voltage measurement with very low drift across temperature. Based on Silicon Labs’ robust, third-generation isolation technology, the new Si89xx family provides flexible voltage, current, output and package options to help developers reduce BOM […]
MEMS pressure sensor withstands harsh environment
The STMicroelectronics LPS33W water-resistant MEMS pressure sensor combines chemical compatibility, stability, and accuracy for use in a wide range of applications such as fitness trackers and other wearables, vacuum cleaners, and general-purpose industrial sensing. Protected by a viscous potting gel inside the cylindrical metal package, the IPx8-rated LPS33W withstands salt water, chlorine, bromine, detergents such […]
Hall effect switches designed for robust automotive applications
Diodes Incorporated today announced its AH356xQ series of omnipolar Hall-effect switches, which are fully certified for automotive applications and qualified to AEC-Q100 Grade 0. Typical applications for these rugged Hall-effect switches include position and proximity sensing, open and close detection, level detection and flow metering. The switches feature a wide operating voltage range of 3V to […]
A comparison of MEMS and electret condenser microphones
By Bruce Rose, Principal Applications Engineer, CUI Inc Many of today’s smart devices such as home digital assistants and IoT sensors are required to “hear” their environment. There is a growing demand for microphones that are not only highly miniaturized, but also robust, easy to design-in, and resistant to nearby acoustic or electrical noise. Fortunately, […]
Advanced transmission speed sensor ICs designed to certified ISO 26262
Allegro MicroSystems has announced the release of its most advanced transmission speed sensor family members, complete with ASIL B certification. The A19520, A19530, and A19570 magnetic sensor ICs are the product of nearly 20 years of application-specific experience and technological advancement—including GMR and Hall effect technology—making them ideal for meeting the demanding requirements of today’s transmission applications. The A19520, […]
Hall Effect sensors provide stable BOP/BRP and ultra-low power consumption
Diodes Incorporated announced the AH1911 and AH1921 digital Hall Effect sensors, which combine market-leading stable operating and release points (Bop and Brp) with ultra-low power operation. The 3rd generation devices will respond to either polarity of magnetic field and feature a ‘hibernating clock’ system to reduce average current consumption to 1.6µA at 3V supply. A wide operating […]
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