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New Vishay Intertechnology AEC-Q200-Qualified, Dual-in-Line Thin Film Resistor Networks Deliver Improved ESD and Moisture Protection
05.26.2015 · News
Vishay Intertechnology introduced a new series of AEC-Q200-qualified, high-precision dual-in-line thin film resistor networks. The Vishay Dale Thin Film AORN series features low TCR tracking of ± 5 ppm/°C, tight ratio tolerances to ± 0.05 %, and excellent long-term ratio stability of 0.015 % after 1000 hours at +155 °C...
Low-side switch with fast turn-off for inductive loads
05.26.2015 · Circuits
This Design Idea is able to turn off inductive loads at a very fast rate. When connected to a load (here 15 mH + 10 Ω), the modified freewheeling path in the clamping circuit based around M2 reduces the turn off time to 450 µs. A simple freewheeling diode in place of the clamping circuit takes about 4 ms to turn off the load...
Diodes Incorporated's 1.9 W Class-D Audio Amplifier Delivers High SPL and Extends Battery Life
05.26.2015 · News
Diodes Incorporated introduced the PAM8905. Aimed at smartphones operating from a single-cell lithium-ion battery, the PAM8905 is a 1.9 W class-D audio amplifier designed for audio systems that need to deliver a high sound pressure level (SPL) output from a low supply voltage...
Microcontroller Solves Complex Temperature Polynomial Equations
05.26.2015 · Circuits · Microcontrollers
This fast-executing program and simple circuit allows a PIC MCU to linearize a thermistor and accurately determine and display the temperature from its measured resistance. When you need to measure temperature using thermistors, you face the challenge of linearizing their response to get accurate readings. One of the best methods for linearizing a thermistor is the polynomial “Steinhart-Hart” equation (S-H)...
Smart ring allows wearer to air-write messages with a fingertip
05.26.2015 · News
Fujitsu Laboratories Ltd has announced the development of what it calls a “compact and lightweight wearable ring-type device that offers handwriting-input functionality and a reader for near-field communications (NFC) tags.” Designed to be worn on the index finger, the ring includes motion sensors (an accelerometer, gyroscope, and magnetic sensor) for text input, an NFC tag reader, and wireless communication functionality and is able to identify the movements users make with their fingertips as they write in the air...
Elmos: BLDC 3x half bridge driver for 48V vehicle electrical system supply and industrial applications
05.21.2015 · News
With the E523.52 IC, Elmos is presenting a fully integrated motor controller for brushless DC (BLDC) motors. The E532.52 can be operated with a supply voltage of up to 72 V. It integrates a powerful 16-bit microcontroller with special motor controller hardware support. The IC controls 3 NMOS half bridges for motor powers up to approx. 1000 W...
Linear versus switching regulators in industrial applications with a 24-V bus
05.21.2015 · Articles
This article compares three different solutions that provide a 5-V output at 100 mA from a 24-V bus. A synchronous step-down (buck) converter is compared to an integrated linear regulator and a discrete linear regulator. Size, efficiency, thermal performance, transient response, noise, complexity, and cost are compared to help designers choose the solution that best meets the constraints of a particular application. Conditions of comparison Figure 1. Switching (buck) converter with integrated MOSFETs. Most industrial applications use a 24-V bus and require 5 V to power various loads, such as logic and low-current microprocessors. An output current of 100 mA is chosen because it accommodates many logic and processor loads...
Acceleration sensor for infotainment systems
05.21.2015 · News
Bosch’s new SMA130 triaxial acceleration sensor provides information for infotainment and telematics applications in vehicles...
Philips Lighting delivers sub-five dollar 60W-equivalent LED lamp
05.20.2015 · News
Philips Lighting has announced a new 60 W-equivalent LED retrofit lamp priced under $5.00 in conjunction with Earth Day. The solid-state lighting product provides an excellent example of the broad array of product-design options afforded by LED sources...
Can you find the missing 1
05.19.2015 · Articles
The bandwidth of an amplifier in a gain of +1 V/V is not the same as the bandwidth of the same amplifier in a gain of –1 V/V. After more than five years of working every day with amplifiers for an industry analogue leader, this was a total surprise to me...
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