TI’s application note (PDF!): Single-cell battery discharge characteristics using the TPS61070 boost converter This application report presents practical single-cell battery discharge characteristics in real-world application, and primarily focuses on the varying internal impedance of a battery and how that affects the battery terminal voltage.
Category Archives: app notes
App note: Using the TPS5430 as an inverting buck-boost converter
A Texas Instruments application note (PDF!) on using the TPS5430 as an inverting buck–boost converter: The wide input voltage range SWIFT™ (Switcher With Integrated FET) dc/dc converters are typically used as step-down converters where the derived output is a positive voltage less than the input voltage source. In some cases, it may be required to […]
App note: Press-Fit technology
PCB Power connection solution from Würth Elektronik, Link here As a solder free fastening technology, press-fit technology frequently offers an attractive alternative to simple soldering technology. An effective electrical press-fit connection is created by pressing a pin into the plated through hole of a circuit board and – as part of cold welding process – […]
App note: Going wireless with magnetic shielding
Efficient magnetic shielding application note from Würth Elektronik, Link here (PDF) Magnetic Field Interferences are increasing in electronic devices due to a number of factors including reduced separation distances of PCB’s, Integrated Circuits and many other sensitive components. In addition to this the extended use of magnetically coupled communication technologies (Qi-WPC, NFC, RFID, PMA, A4WP, […]
App note: Anti-tampering solution for E-Meter application
App note from Infineon Technologies on 3D sensor used as anti-tampering devices on E-Meters, Link here (PDF) This application note describes a possible realization of an anti-tampering solution in an Electricity Meter. With the new product family of the 3D Magnetic Sensor (TLV493D), Infineon offers an innovative solution for three-dimensional magnetic position sensing. By allowing […]
App note: Using a magnetic 3D sensor in a gear stick application
6 hall effect sensors effectively replaced by one 3D sensor, an application from Infineon Technologies. Link here (PDF) A magnetic 3D sensor is well suitable for a detection of the position of the gear stick. The „State-of-the-art“ solution with up to 6 single hall switches can be replaced by one 3D sensor. The TLE493D-W1B6 has […]
App note: MOSFET power losses and how they affect power-supply efficiency
Here’s an application note (PDF!) from Texas Instruments on MOSFET power losses and how they affect power-supply efficiency: Power-supply efficiency is a critical criterion for today’s cloud-infrastructure hardware. The efficiency of the chosen power solutions relates to system power loss and the thermal performance of integrated circuits (ICs), printed circuit boards (PCBs), and other components,which determines […]
App note: CCD Fundamentals
ON Semiconductor’s Charge-Coupled Devices primer application note. Link here (PDF) Like many technologies, the Charge-Coupled Device (CCD) started out as one kind of creature and wound up as something completely different. Invented in the late 1960’s by researchers at Bell Labs, it was initially conceived as a new type of computer memory circuit, and it […]
App note: Understanding data eye diagram methodology for analyzing high speed digital signals
Application note from ON Semiconductors about the Data eye diagram methodology to represent and analyze a high speed digital signal. Link here (PDF) The eye diagram allows key parameters of the electrical quality of the signal to be quickly visualized and determined. The data eye diagram is constructed from a digital waveform by folding the […]
App note: STM32 cross-series timer overview
STM32 timer overview application note (PDF!) from ST: The STM32 devices are built-in with various types of timers, with the following features for each: General-purpose timers are used in any application for output compare (timing and delay generation), one-pulse mode, input capture (for external signal frequency measurement), sensor interface (encoder, hall sensor)… Advanced timers: these […]
App note: HVArc Guard® surface-mount capacitors for low-power voltage multiplier applications
Application note on Vishay’s arc resistant SMD capacitors, Link here (PDF) Voltage multipliers can generate very high voltages due to an inverter circuit that feeds a step-up transformer, which is connected to the multiplier circuit. An example of a typical voltage multiplier, which is simply a circuit comprised of capacitors and diodes that charge and […]
App note: AC film capacitors in connection with the mains
An application note from Vishay about choosing the right filter capacitors that are placed directly on mains. Link here (PDF) To help reducing emission and increasing the immunity of radio interference, electromagnetic interference suppression film capacitors (EMI capacitors) are playing a major role in all kind of applications. These capacitors are put directly parallel over […]
App note: Modern PRTD temperature sensors and high-resolution Delta-Sigma ADCs enable wide range high-accuracy temperature measurements
Modern PRTD temperature sensors and high-resolution Delta-Sigma ADCs enable wide range high-accuracy temperature measurements application note from Maxim: Many modern industrial, medical, and commercial applications require temperature measurements in the extended temperature range with accuracies of ±0.3°C or better, performed with reasonable cost and often with low power consumption. This article explains how platinum resistance […]
App note: Simple wireless temperature monitor also has dataLogging capabilities
Maxim’s application note (PDF!): Simple wireless temperature monitor also has dataLogging capabilities: This design idea shows how you can design a simple wireless temperature-monitoring system with data-logging capabilities by using a local temperature sensor and an ASK transmitter and receiver pair.
App note: The 2-Channel serial audio interface: A tutorial
A pretty older application note about the serial audio interface by Cirrus Logic. Link here (PDF) It may come as a surprise to those trying to make their initial investigation into audio systems design that there is a de-facto standard for transferring audio data within a system. Despite the differing naming conventions used within the […]
App note: The LM4935 headset and push-button detection guide
Another headset plug-in detection from Texas Instruments. Link here (PDF) The headset detect circuitry can differentiate between mono, stereo, mono with microphone, and stereo with microphone headsets. It can operate while the LM4935 is placed into low current standby mode, which promotes extended battery life. In standby mode, it consumes no extra current, if the […]
App note: Differences between ATmega328/P and ATmega328PB
Differences between ATmega328/P and ATmega328PB (PDF!) application note from Atmel: This application note assists the users of Atmel® ATmega328 variants to understand the differences and use Atmel ATmega328PB. ATmega328PB is not a drop-in replacement for ATmega328 variants, but a new device. However, the functions are backward compatible with the existing ATmega328 functions. Existing code for […]
App note: MSP430 32-kHz crystal oscillators
MSP430 32-kHz crystal oscillators (PDF!) application note from Texas Instruments: Selection of the right crystal, correct load circuit, and proper board layout are important for a stable crystal oscillator. This application report summarizes crystal oscillator function and explains the parameters to select the correct crystal for MSP430 ultralow-power operation. In addition, hints and examples for correct board layout are given. […]
App note: Transformers
All about transformers and its different uses in this application note from Murata. Link here (PDF)
App note: Inductors
Murata’s application note about inductors and its specifications. Link here (PDF) Reading a specification for an inductor is considered a simple task, however, there is often some confusion even over the meaning of relatively straight forward parameters.