Category Archives: app notes

App note: Free-fall sensing for drop-force modeling using a Kionix MEMS tri-axis accelerometer

in app notes by DP | 0 comments

Here’s another app note (PDF) from Kionix on their tri-axis accelerometer applications. An earlier set-up was used in the application note’s experiment. This application note describes how to use a Kionix MEMS tri-axis accelerometer as a free-fall sensor for drop … Read more

App note: Interfacing the KXP94 or KXR94 tri-axis accelerometer with the Texas Instruments MSP430F149 microprocessor to measure tilt and other motions

in app notes by DP | 0 comments

Capture motions with Kionix’ Tri-Axis Accelerometers and a TI’s MSP430F149. App note here (PDF) Kionix linear accelerometers function on the principle of differential capacitance. Acceleration causes displacement of a silicon structure resulting in a change in capacitance. A signal-conditioning CMOS … Read more

App note: Principles of SAWR-stabilized oscillators and transmitters

in app notes by DP | 0 comments

Principles of SAW-stabilized oscillators and transmitters from EPCOS, app note here (PDF!) This application note describes the physical principle of SAW-stabilized oscillator. Oscillator structures for one- and two-port SAW resonators are discussed. An application example for a 433.92MHz transmitter for keyless entry is … Read more

App note: Overcoming disorientation – Practical ways to assemble MEMS inertial sensors

in app notes by DP | 0 comments

An app note from Maxim,  Overcoming disorientation: Practical ways to assemble MEMS inertial sensors Component placement and mounting conditions can adversely affect MEMS inertial sensor performance. This application note contains practical considerations for enhancing sensor system operation where the “real-world” … Read more

App note: Complex power supply sequencing made easy

in app notes by DP | 2 comments

Power sequencing from Analog Devices using their ADP5134 sequencer IC. App note here (PDF) Power supply sequencing is required for microcontrollers, field programmable gate arrays (FPGAs), digital signal processors(DSPs), analog-to-digital converters (ADCs), and other devices that operate from multiple voltage … Read more

App note: Using the STC3100 battery monitor for gas gauge applications

in app notes by DP | 1 comment

A battery monitoring chip STC3100 from STMicroelectronics tells you voltage, current, battery temperature and additionally coulomb counter for gas gauge. App note here (PDF) The STC3100 battery monitoring function includes the measurement of the battery voltage and current, measurement of … Read more