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Posts Tagged ‘app note’

App note: General overview of IR transmission in free ambient

Sunday, September 25th, 2016

Vishay's general information about IR transmission in free ambient. Link here (PDF) Free ambient IR data transmission, IR remote control as well as most opto-electronic sensors and light barrier systems work with an optical wavelength between 870 nm and 950 nm. The emitter and detector components are highly efficient in...

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App note: Using Vishay infrared receivers in a Wi-Fi environment

Sunday, September 25th, 2016

2.4Ghz and 5 Ghz Wi-fi signals can sometimes affect IR receivers, here's Vishay's app note about them. Link here (PDF) In recent years, Wi-Fi connectivity has penetrated most consumer electronic devices used for media reproduction. New TVs, satellite receiver and cable boxes, and streaming devices are more often than not...

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App note: High-speed level shifting using Si8XXX isolators

Sunday, September 18th, 2016

Silicon Lab's Si86xx which provides digital isolation and voltage level shifting while Si823x as ISOdrivers, Link here (PDF) Voltage level shifting is common in analog and mixed-signal system applications. While several technologies implement level shifting (e.g., HVIC processes, discrete circuits, dedicated level shifting ICs), recent advances in CMOS isolation technology...

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App note: Novel current-sense measurement with automatic offset correction

Sunday, September 18th, 2016

Silicon Labs' application note about a low power current measurement circuit using TS1001 nano power op-amp paired with low-power CY8C38 microcontroller, Link here (PDF) Pairing a simple circuit using nanopower analog op amps with a microcontroller can monitor single battery cells and solar harvesters. Pairing up a 0.65 V/1 µA...

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App note: Class D audio amplifier basics

Sunday, September 11th, 2016

Class D audio amplifier an efficient amplifier by Infineon Technologies, Link here A Class D audio amplifier is basically a switching amplifier or PWM amplifier. There are a number of different classes of amplifiers. This application note takes a look at the definitions for the main classifications.

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App note: How to pick a click-and-pop suppressor

Sunday, September 11th, 2016

Audio noises click-and-pop suppression method from Maxim. Link here (PDF) This application note presents the MAX9890 and MAX9892 which use different approaches to remove audible click and pop from headphones. Each device is uniquely suited to different applications.

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App note: Using Cymbet™ EnerChip™ batteries instead of coin cells and super capacitors

Sunday, September 4th, 2016

High charge/discharge cycle and solid state reliability EnerChip from Cymbet make this a good replacement for super caps and coin cell backup batteries. Link here (PDF) Primary and secondary (i.e., rechargeable) coin cell batteries, as well as super capacitors, have been in use for years as auxiliary power sources for...

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App note: Battery fuel gauge IC (LC709203F) for 1-Cell Lithium-ion (Li+)

Sunday, September 4th, 2016

Lithium-ion fuel gauge IC from ON Semiconductors. Link here (PDF) The LC709203F is an IC that measures the remaining power level of 1-cell lithium-ion (Li+) batteries used for portable equipment etc. This product reduces fuel gauge errors with a unique correction technology during measurement of battery temperature and voltage. This...

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App note: Snubber capacitors for complete insurance of power semiconductors

Sunday, August 28th, 2016

An application note from WIMA about snubber capacitors, Link here. The trend of modern semiconductor technology towards increasingly powerful applications results in the fact that switched currents and voltage levels are continuously increased and that simultaneously the switching speed is also increasing markedly. The developments in the area of power...

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App note: Selection of capacitors for pulse applications

Sunday, August 28th, 2016

Guidelines from WIMA about selecting capactiors for pulsed conditions. Link here The maximum permissible AC voltage that can be applied to capacitors in sinusoidal waveform applications, can be determined from the graphs in the respective capacitor ranges. However, where pulse conditions exists, the following procedure is to be observed to...

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App note: Measuring a loudspeaker impedance profile using the AD5933

Sunday, August 21st, 2016

An application note from Analog Devices about AD5933, this provides a low cost substitute to expensive test equipment like signal generators, oscilloscope and voltmeters in getting the speaker's impedance profile. Link here (PDF) This application note describes a circuit architecture using the AD5933 that allows the system designer to measure...

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App note: Choosing the appropriate component from data sheet ratings & characteristics.

Sunday, August 21st, 2016

Chossing the right power semiconductor for an application, a technical note from IXYS. Link here This application note is intended to show how to choose the appropriate rating of a power semiconductor component for a known application using the specifications given in the datasheet. The explanations have been kept sufficiently...

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App note: Voltage to current conversion

Sunday, August 14th, 2016

Using Apex Microtechnology's power op amps for voltage controlled current sources (VCCS's) application note, Link here (PDF) Voltage controlled current sources (or VCCS’s) can be useful for applications such as active loads for use in component testing or torque control for motors. Torque control is simplified since torque is a...

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App note: Programmable power supplies

Sunday, August 14th, 2016

Apex Microtechnology's application note about programmable power supplies. Link here (PDF) The programmable power supply (PPS) is not only a key element in automated test equipment, but it is also used in fields as diverse as industrial controls, scientific research and vehicular controls. When coupled to a computer, it bridges...

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App note: Wear leveling in NAND flash memory

Sunday, August 7th, 2016

Application note/Technical note from Macronix on extending the maximum endurance limit of NAND flash memories by wear leveling. Link here (PDF) NAND flash memory is widely used in today’s embedded systems for code and data storage applications. Some applications are required to perform numerous Program and Erase operations on the...

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App note: Understanding a digital transistor datasheet

Sunday, August 7th, 2016

Application note from ON Semiconductors about digital transistors where two resistors are built-in the transistor package. Link here (PDF) This application note will describe the common specifications of a Digital Transistor. It will also show how to use these specifications to successfully design with a Digital Transistor.

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App note: Solid state relay parallel and DC operation

Sunday, July 31st, 2016

Parallel two solid state relays for improved current handling and avoiding imbalance of load distribution are discussed in this an app note from Vishay. Link here (PDF) Vishay solid state relay (SSR) outputs can be wired in parallel enabling the user to benefit from lower on-resistance and higher load currents...

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App note: Solid-State Relays

Sunday, July 31st, 2016

Solid-state relays introduction from Vishay, Link here (PDF) MOSFET SSRs feature an optocoupler construction, but have a pair of MOSFETs on the output instead of a phototransistor. A pair of source-coupled MOSFETs emulate an electromechanical relay by providing bidirectional switch capability and a linear contact. No output power supply is...

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App note: Flow sensing in tankless water heaters

Sunday, July 24th, 2016

Contactless reed switches from Littelfuse provides flow and water presence monitoring. Link here (PDF) Reed switches and sensors are highly effective solutions for flow sensing applications that can be used for detecting the presence of fluid flow in a system or even measure the rate of fluid flow. Tankless water...

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App note: Circuit protection technology application matrix application guide

Sunday, July 24th, 2016

Here's an application matrix of Littelfuse's circuit protections, Link here (PDF)

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