ICs & Semiconductors Archives - Page 193 of 235

Audio ADC quadruples far-field voice capture distance

Wed, Nov 06, 2019

Engineers can now achieve a 120dB dynamic range for clear, high-fidelity audio in smart home applications, says Texas Instruments (TI) as it introduces the TLV320ADC5140audio ADC. It can capture clear audio up to four times farther away than competing devices, claims TI. The TLV320ADC5140 is the industry’s smallest quad-channel audio ADC with this level of performance, says the company. It is part of a family of three TI Burr-Brown audio ADCs that enable low-distortion audio recordings in loud environments and far-field, high-fidelity recordings in any environment.

In smart home systems, a limited number of microphones and restricted signal processing capability make it difficult to capture and understand voice commands in loud environments. To meet this challenge, the TLV320ADC5140 enables engineers to improve audio capture from across rooms and boost recognition of soft-spoken commands in applications such as high-end smart speakers, sound bars, wireless speakers, high definition TVs, IP network cameras, tele-conferencing systems and smart appliances.

The TLV320ADC5140 provides clear audio capture in any environment in beamforming systems, says TI. It has a built-in 120dB dynamic range enhancer (DRE). At a system level, the DRE scheme boosts low-volume audio signals while maintaining low-distortion recordings, even at close proximity to the speaker output. The DRE also improves far-field, high-fidelity recordings in all environments.

The TLV320ADC5140 is believed to be the first ADC that fully supports the latest high signal-to-noise-ratio microphones with greater than 106dB dynamic range.

Up to four analogue or eight digital microphones can be converted and programmable features such as gain and phase calibration can equalise microphone-array mismatches. Other features include a programmable gain amplifier, high-pass filters, channel mixing, and linear phase or ultra-low-latency decimation filters.

The TLV320ADC5140 enables engineers to offload digital signal processing tasks, to shrink the size of designs while maintaining system reliability and minimising power consumption to only 9.5mW per channel at 48kHz.

The TLV320ADC5140 is available in a 4.0 x 4.0mm, 24-pin wafer quad flatpack no-lead (WQFN) packaging. The TLV320ADC5140 quad-channel 768-kHz TI Burr-Brown audio ADC evaluation module, the ADC5140EVM-PDK, is also available.

http://www.ti.com

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Automotive-certified level shifters assist ADAS development

Tue, Nov 05, 2019

Two high-speed, automotive-compliant voltage translators for use in environments with ambient temperatures up to 125 degrees C are available from Diodes. The PI4ULS5V108Q and PI4ULS5V202Q are designed for use in advanced driver-assistance systems (ADAS), infotainment, and telematics equipment.

Both shifters are compatible with either push-pull or open-drain connections. They have bi-directional flexibility with automatic direction sensing simplifies level shifting between bus interfaces, such as SMBus, PMBus, or I2C devices, by eliminating any requirement for a direction-control signal.

The eight-channel PI4ULS5V108Q performs up-translation at up to 100MHz and down-translation at over 100MHz. This performance makes it suitable for use in high data-rate interfaces, says the Diodes. Designers can ensure fast exchanges across SPI or other interfaces, with no limitation due to level shifting. This enables data transfers between system-on-chip (SoC) and peripheral components to be executed with optimum efficiency.

The PI4ULS5V202Q is a two-channel translator with internal 10kOhm pull-up resistors, allowing direct connection to interfaces with open-drain topology, such as I2C ports. The large maximum voltage-translation range of 1.2 to 5.5V enables the device to work with a variety of I2C chips and circuit designs. The PI4ULS5V202Q’s high-speed, one-shot detectors at the IC inputs result in fast rise and fall times. The PI4ULS5V202Q is able to support data rates of up to 20Mbits per second.

Both devices are AEC-Q100 grade 1 qualified, for automotive use and PPAP (production part approval process) -capable. They are in production at IATF 16949 certified sites.

The PI4ULS5V108Q is available now in the TSSOP-20 package and the PI4ULS5V202Q is offered in the MSOP-8 package.

Diodes manufactures and supplies application specific standard products within the broad discrete, logic, analogue, and mixed-signal semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive markets. Products include diodes, rectifiers, transistors, MOSFETs, protection devices, function-specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors, power management devices, including LED drivers, AC/DC converters and controllers, DC/DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. Diodes also has timing, connectivity, switching, and signal integrity solutions for high-speed signals.

http://www.diodes.com

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Rugged edge node has processing performance for smart cities

Fri, Nov 01, 2019

A rugged outdoor edge node from Aaeon, Atlas, is built to provide cities with flexible solutions for AI and edge computing. It has the Intel Movidius Myriad X for real-time processing for a range of smart city applications.

It is based on the compact Aaeon NanoCOM-APL board, featuring the Intel Atom x7, providing efficient computing with low power consumption. It is designed with an IP66-rated fanless chassis, for installation on any streetlight, making it easy to quickly set up and deploy, says the company. Connectivity is via Wi-Fi, Gigabit Ethernet, or even 4G/LTE for flexible communication within an edge network or with a central cloud server. The Aaeon Atlas also features built-in cameras and sensors for data collection and analysis.

An embedded Intel Movidius Myriad X vision processing unit (VPU) provides a low-power, high-performance solution for on-device AI inference. The Atlas is compatible with the Intel Distribution of OpenVINO toolkit, which includes optimisation and hardware acceleration to maximise the capabilities of the VPU

As an edge gateway, AEON Atlas can connect with up to 200 smart street lights, providing intelligent control. It has licence plate recognition AI inference to power applications such as smart street parking or detecting traffic violations or accidents. With traffic and congestion monitoring, Aaeon Atlas can optimise traffic signals in real time to help improve traffic flow. Aaeon Atlas can also anonymously detect pedestrians in crowd control and flow monitoring applications.

Established in 1992, Aaeon designs and manufactures professional intelligent IoT solutions. It provides industrial motherboards and systems, industrial displays, rugged tablets, embedded controllers, network appliances and related accessories, as well as integrated solutions. It also has the hardware and services for premier OEM/ODMs and system integrators worldwide. It is an Associate Member of the Intel Internet of Things Solutions Alliance and offers customised end-to-end services from initial product conceptualisation and board product development to mass manufacturing and after-sales service programs.

http://www.aaeon.com

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Evaluation kit supports energy harvesting embedded controller

Fri, Nov 01, 2019

For the development of battery maintenance-free IoT equipment, Renesas Electronics has introduced the RE family, which encompasses the company’s current and future line-up of energy harvesting embedded controllers. The RE Family is based on Renesas’ proprietary Silicon on Thin Buried Oxide (SOTB) process technology. SOTB is claimed to dramatically reduce power consumption in both active and standby states, eliminating the need for battery replacement or recharging.

Following the introduction of the RE01 microcontrollers, the first of the RE family, the RE01 Group evaluation kit is now available to allow users working with the RE01

Hiroto Nitta, senior vice president, Head of SoC Business, IoT and Infrastructure Business Unit at Renesas, said: “We hope this will accelerate the spread of IoT equipment powered by energy harvesting.”

The RE01 evaluation kit includes an evaluation board with an RE01 embedded controller, an interface for the energy harvesting device and a rechargeable battery interface. There is also an Arduino-compatible interface for easy expansion and evaluation of sensor boards and a Pmod connector to expand and evaluate wireless functionality. There is also a low power memory in pixel (MIP) LCD expansion board so that users can evaluate display functions faster. The kit also contains sample code and application notes that serve as references for power management design that eliminates the need for battery maintenance, and driver software that supports CMSIS, Arm’s Cortex Microcontroller Software Interface Standard. Sample code for low power ADCs, digital filter and fast Fourier transform (FFT) routines, 2D graphics MIP LCD displays, and secure boot and secure firmware update functions for improved security are available.

The kit can be used to adopt energy harvesting based on RE01 Group devices at the system level and will accelerate the development of equipment that does not require battery maintenance.

IAR Embedded Workbench for Arm which can use the high efficiency IAR C/C++ compiler, and e2 studio (note 2) which can use the free GNU compiler are available as the developmental environment.

The RE01 evaluation kit is available now.

http://www.renesas.com

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Audio ADC quadruples far-field voice capture distance

Automotive-certified level shifters assist ADAS development

Rugged edge node has processing performance for smart cities

Evaluation kit supports energy harvesting embedded controller

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