Design resources for personal electronics electronic design gas in oil pan


The personal electronics market includes a large and diverse set of products, from ultra-high definition (UHD) TVs, smart speakers, and virtual-reality (VR) headsets to fitness bands, video game controllers, and more. Similarly, designing products for the personal electronics market demands a large and diverse set of skills. gasset y ortega biografia In this fast-moving environment, continuous education is a must, and so is access to an ever-expanding set of application notes, reference designs, and technical resources to help you keep up to speed.

As a leader in technical education for working engineers, Texas Instruments has hundreds of design resources on personal electronics applications. The Personal Electronics Overview page has sections on gaming, home theater, portables, connected peripherals, computing, and other topics. Each section has its own overview page to help you dig deeper.

A smart speaker combines a wireless speaker and a voice-recognition system with a virtual assistant. electricity bill bihar electricity board It offers interactive actions and hands-free activation with the help of a key word or phrase. Some of the best-known are “Alexa,” “Hey Siri,” or “OK Google.” Some smart speakers can also act as a smart device that utilizes Wi-Fi, Bluetooth, and other wireless protocol standards to extend usage beyond audio playback, such as to control home-automation devices.

The Logic and Control subsystem includes digital logic and level translators to correct or combine logic signals and voltage levels. It interfaces between the digital-processing subsystem and other subsystems, including the audio block. The monitoring subsystem includes fault detection, self-diagnosis circuitry, and temperature sensors to help prevent overheating—always a potential issue when many heat-generating devices are packed into a small package.

The Input Power Protection subsystem protects the rest of the system from overvoltage and overcurrent, and includes functions such as current sense and eFuse (eFuse provides current-sense accuracy and thermal protection). If the smart speaker is powered via USB Type-C, the USB Type-C power path can provide overvoltage, overcurrent, and ESD protection for the rest of the system.

If the smart speaker has a display, there are two common options: an LCD display and a projection display. mafia 2 gas meter An LCD display requires an LCD bias and backlight controller to provide the proper voltage supplies to the display screen; a projection display includes a digital micromirrors device (DMD), a display controller, and a PMIC/LED driver.

Also included in the reference design is the TPS65911x power-management integrated circuit (PMIC). This flexible device accommodates multiple energy sources and can support processors and applications that require multiple power rails. It includes three step-down converters, eight low-dropout (LDO) regulators, and a controller for an external power FET.

There are several reference designs in the voice-recognition block. gas refrigerator not cooling Extracting clear audio from noisy environments is one key application requirement in a voice-activated device. Two reference designs focus on audio preprocessing systems, offering the choice of either a TMS320C5517 fixed-point DSP or a TMS320C6747 DSP with both fixed- or floating-point operation (Fig. 2). The reference designs use multiple microphones, a beamforming algorithm, and sophisticated signal processing to extract clear speech and audio in the midst of noise and other clutter.

Two reference designs deal with the design of the microphone array. gas 2 chainz Both make use of the PCM1864, (Fig. 2, again), a four-channel software-controlled audio analog-to-digital converter (ADC), to capture a voice signal from up to four microphones and convert it to digital form for downstream digital processing. One reference design uses a linear microphone board ( LMB); the other, a circular microphone board ( CMB).

Now, let’s examine a few of the resources available for designers of another product: VR and AR (augmented reality) headsets (Fig. 4). Although they’re wildly popular in gaming, reality technologies aren’t just for recreation. On the factory floor, a machine operator can use AR goggles to receive training or instructions, or an engineer can tour a new plant well before the groundbreaking ceremony; in the hospital, an anatomy medical student can dissect a virtual cadaver without a knife, or a surgeon can see clinical data and view options during a procedure.

The projection display is most popular in AR glasses and includes a DLP chipset consisting of a digital micromirror device ( DMD), a display controller, and a PMIC/LED driver. A DMD is an array of highly reflective aluminum micromirrors constructed with optical microelectromechanical-systems (MEMS) technology. A DMD pixel is an optomechanical element with two stable micromirror states that define “on” and “off” conditions. gas bubble in eye The DLP system provides vivid, high-quality images up to 4K ultra-high resolution (UHD).

The Ultra-Mobile, Low Power nHD Display Reference Design with TI DLP® Technology for Low-Cost Processors provides the most affordable way to incorporate DLP technology into a VR display application. The reference design uses the DLP Pico chipset that enables bright, high-contrast, low-power head-mounted displays (HMDs) and near-eye displays (NEDs) with fast refresh rates.

The design includes the DLP2000 chipset comprising the DLP2000 DMD with a 640 X 360 array, the DLPC2607 display controller that supports 60Hz frame rates, and DLPA1000 PMIC/LED driver (Fig. 6). The reference design can be used with low-cost application processors that support the 8/16/24-bit RGB parallel video interface in small-form factors.