Category Archives: app notes

App note: Measure capacitance of Class-II and Class-III ceramic capacitors

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KEMET’s app note(PDF) on the methods used on measuring capacitance of different classes of ceramic capacitors. This application note addresses proper capacitance measurement techniques of Class-II (X7R/X5R) and Class-III (Y5V/Z5U) ceramic capacitors and identifies common errors that are made upon … Read more

App note: Standalone Linear Li-Ion battery charger with thermal regulation in ThinSOT

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Standalone Linear Li-Ion battery charger with thermal regulation in ThinSOT application note (PDF!) from Linear: The LTC4054 is a single cell lithium-ion battery charger using a constant-current/constant voltage algorithm. It can deliver up to 800mA of charge current (using a good … Read more

App note: Using the DAC as a function generator

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A function generator from an C8051 DAC application note(PDF) from Silicon Labs This document describes how to implement an interrupt driven multifunction generator on C8051 devices using the on-chip digital-to-analog converter (DAC). Four different waveforms expandable to any periodic function … Read more

App note: Demodulating communication signals of Qi-compliant low-power wireless charger using MC56F8006 DSC

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Demodulating the Qi standard wireless power charger app note(PDF) using MC56F8006 digital signal controller from Freescale Semiconductor. Wireless power is becoming more and more popular today, through which a number of electronic items like mobiles, laptops, media players, can be … Read more

App note: Low-power wireless charger transmitter design using MC56F8006 digital signal controller

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An app note(PDF) from Freescale Semiconductor on 5-16V, free positioning multiple primary coils “Qi” compatible wireless power transmitter. Wireless power transmission system transfers electrical power from transmitter to receiver without any wire connection. Due to safety, freedom, reliable, convenient and … Read more

App note: Building a battery operated auto ranging DVM with the ICL7106

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Intersil’s application note (PDF!) on building a battery operated auto ranging DVM with the ICL7106: This application note describes a technique for auto-ranging a battery operated DVM suitable for panel meter applications. Also, circuit ideas will be presented for conductance and resistance measurement, … Read more

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App note: Output current sensing for the MC07XS6517 and MC17XS6500 eXtreme switch devices

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An app note(PDF) from Freescale Semiconductor This document describes the current sense performance of eXtreme switches, and describes the enhanced current sense mode dedicated for low current loads, such as light emitting diodes (LED). This application note also presents the … Read more

App note: Lateral mosfet design recommendations for audio amplifiers

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Semelab’s application note on lateral mosfet design recommendations for audio amplifiers: Semelab’s range of lateral mosfets has been specifically designed for audio power amplifiers and there are a number of advantages that they exhibit over bipolar transistors in these applications. This application … Read more

App note: FPGA configuration from SPI Flash memory using a Microprocessor

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From Xilinx application note on FPGA configuration method: This application note describes a simple and efficient FPGA configuration method that utilizes a microprocessor to configure an FPGA device from a Serial Peripheral Interface (SPI) flash memory. This method reduces hardware components, … Read more