App note: Input for magnetometer placement simulations

App note from Kionix on things to look for and placement evaluation before placing magnetometer on PCBs. Link here (PDF) Simulations of the magnetic field environment to provide magnetometer part placement recommendations need considerable technical information to assist the process. Magneto-static and magnetic noise information of the materials and magnetic field sources need to be […]

App note: Handheld electronic compass applications using a Kionix MEMS Tri-Axis accelerometer

App note from Kionix on the how to’s of handheld compass, diving into Earth’s magnetic basics, plots and equations. Link here (PDF) Today’s world is about mobility. The expanded and growing availability of cell phones, PDA’s and GPS has resulted in a massive integration of features into handheld devices. Growing in popularity, the integrated electronic […]

App note: Driving multiple loads with 32 kHz Nano-Power MEMS oscillators

Accomodating multiple loads from a single oscillator output discussed in this app note from SiTime. Link here (PDF) Optimizing board space and managing power consumption of wearable devices is critical in sustaining competitiveness within this fast growing consumer segment. With less power consumed, battery life is extended or provides the option to reduce the battery […]

App note: Tilt-Sensing with Kionix MEMS accelerometers

Kionix low-g acceloreometers used as tilt-sensor. Link here (PDF) Accelerometers have countless potential tilt-sense applications in today’s motion-enabled world. Tilt-sensing opportunities exist in a variety of industries, such as automotive, consumer electronics and military/aerospace, and include: • Vehicle stability systems • Inclinometers • Cell phone/PDA screen navigation • Motion-enabled game play • Tilt-enabled computer mouse/pointer […]

App note: Thermal mass flow sensors for gas and liquid applications

White paper from Integrated Device Technology on the emergence of MEMS thermal mass flow sensors. Link here (PDF) Flow meters represent the instrumentation of flow sensors and are used to measure the amount of flow that passes through them. There are in principal five different flow meter types: velocity flow, positive displacement flow, differential pressure […]

Teardown of a Piezoelectric vibrating gyroscope

Kerry Wong did a teardown of an old analog piezoelectric vibrating gyroscope: Gyroscopes nowadays are based on micro-electro-mechanical systems (MEMS) technology. They are low cost and extremely miniaturized. A device combing both a three-axis gyroscope and a three-axis accelerometers (sometimes these devices are referred to as 6DOF devices) such as the MPU-6500 for example can be […]

App note: An Introduction to MEMS Microphone Specifications

An application note from Cirrus Logic on their MEMS microphones, which are small and perfect for wearables devices. Link here (PDF) MEMS microphones are small form factor microphones, which translate acoustic sound pressure input into an electrical output response. They utilise the silicon wafer processes from the microelectronic industry to create high performance microphones of […]