Weartech-ICs & Semiconductors Archives - Page 38 of 41

Bluetooth low energy module from u-blox includes direction finding

Thu, Oct 31, 2019

Features such as direction finding, long range and operation up to +105 degrees C make up the u-blox NINA-B4 series of standalone modules. They are designed for indoor positioning applications and for deployments in harsh environments.

The u-blox NINA-B4 Bluetooth low energy modules are based on Nordic Semiconductor’s recently announced nRF52833 chip. The module enables Bluetooth long range, Bluetooth mesh, and Bluetooth direction finding for applications in the connected industry, smart homes, buildings, and cities, asset tracking, and healthcare.

Bluetooth’s new direction finding feature, part of the Bluetooth v5.1 specification, brings the benefits of high precision positioning to indoor applications, says u-blox. NINA-B4 is the first u-blox module designed to act as both a transmitter and a receiver in angle of arrival (AoA) and angle of departure (AoD) direction finding and indoor positioning applications.

In AoA-based implementations, stationary beacons equipped with multi-antenna arrays determine the angle of arrival of signals emitted by a tracking device to pinpoint the tracker’s location with sub-meter level accuracy. When AoD is used, the tracking device triangulates its position by calculating the angle of departure of signals from the stationary Bluetooth beacons’ multi-antenna arrays.

The NINA-B4 enables wireless mesh networks for robust communication between large numbers of connected devices. The networks relay messages from node to node and, by simplifying the control of groups of devices, can be used in smart lighting systems in cities and buildings. These applications also further benefit from the module’s enhanced operating temperature range (up to +105 degrees C).

Bluetooth long range is also a feature for the NINA-B4 series, making it suitable for deployments in harsh environments, e.g. to enable wirelessly connected and configurable equipment. Long range not only increases the distance that Bluetooth signals can travel in undisturbed environments, it also makes communications more robust and reliable in unfavourable ones, such as in production plants or on factory floors.

The NINA-B4 series is supplied with u-blox u‑connect software. It provides an interface to configure the required connectivity to integrate Bluetooth into new and existing products.

There is also a powerful Arm Cortex-M4F microcontroller with an open CPU architecture. This allows customers to run their own applications right on the module. Supporting Zigbee and Thread, the first members of the NINA-B4 family have an internal PCB antenna, or alternatively, are supplied with a U.FL connector for an external antenna of choice.

Samples of the NINA-B4 will be available in December.

http://www.u-blox.com

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Nordic introduces Bluetooth 5.1 SoC for multi-protocol applications

Tue, Oct 22, 2019

Temperature-qualified, the nRF52833 SoC joins Nordic’s nRF52 series. The multi-protocol SoC includes a Bluetooth 5.1 Direction Finding-capable radio for low power Bluetooth Low Energy, Thread, Zigbee, and 2.4GHz proprietary wireless connectivity. It is qualified for operation across a -40 to +105 degrees C temperature range.

The nRF52833 features a powerful 64MHz 32bit Arm Cortex-M4 processor with a floating-point unit (FPU) and includes 512kbyte of flash and 128kbyte of RAM, suitable for use in commercial and industrial wireless applications including professional lighting, asset tracking, smart home products, wearables, and gaming.

The SoC’s memory capacity also supports a dynamic multi-protocol capability, suitable for applications such as professional lighting where concurrent Bluetooth Low Energy and Bluetooth mesh, Thread or Zigbee support enables provisioning, commissioning, and interaction with a lighting mesh network from a smartphone using Bluetooth Low Energy. The temperature range also enables the nRF52833 to operate in professional lighting applications which typically feature elevated ambient temperatures, adds Nordic.

The nRF52833’s radio is capable of all Bluetooth 5.1 Direction Finding features and its memory can support both receiver and transmitter roles for angle-of-arrival (AoA) and angle-of-departure (AoD) applications. Direction Finding enables positioning applications that not only rely on received signal strength indication (RSSI) but also the signal direction. Applications include real-time location systems (RTLS) and indoor positioning systems (IPS).

The nRF52833 includes full-speed USB, high-speed SPI, and +8dBm output power. The increased output power together with Bluetooth 5 technology’s long-range (LoRa) feature enables the nRF52833 to be used in smart home applications.

The SoC includes up to 42 general-purpose I/Os (GPIOs) and a range of analogue and digital interfaces such as an NFC-A Tag, ADC, UART, SPI, TWI, PWM, I2S, and PDM. Additionally, a two-stage LDO voltage regulator and a DC/DC converter with a 1.7 to 5.5V input supply range allows the nRF52833 SoC to be powered by coin cells, rechargeable batteries, or the on-chip USB.

The nRF52833 is supported by the S113 or S140 SoftDevices, Nordic’s Bluetooth RF protocol stacks. The S140 is a qualified Bluetooth 5.1 stack and includes support for 2Mbits per second throughput, Bluetooth LoRa and improved coexistence through Channel Selection Algorithm #2.

The nRF5 SDK for Mesh and nRF5 SDK for Thread and Zigbee are scheduled for release in Q4 2019.

An nRF52833 development kit is for Bluetooth LE, Bluetooth mesh, 802.15.4, Thread, Zigbee, and 2.4GHz proprietary applications running on the nRF52833 SoC. It is compatible with the Arduino Uno Rev3 standard.

The SoC will be made available in three packages: a 7.0 x 7.0mm aQFN73 with 42 GPIOs, a 5.0 x 5.0mm QFN40 with 18 GPIOs and a 3.2 x 3.2mm wlCSP with 42 GPIOs.

nRF52833 engineering samples are available now with volume production due Q4, 2019.

http://www.nordicsemi.com

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Adaptable buck-boost converters deliver up to 2.5A in tiny packaging

Tue, Oct 01, 2019

A family of four high-efficiency, low-quiescent-current (IQ) buck-boost converters that feature tiny packaging with minimal external components for a small solution size is now available from Texas Instruments (TI).

The integrated TPS63802, TPS63805, TPS63806 and TPS63810 DC/DC non-inverting buck-boost converters offer wide input and output voltage ranges that scale to support multiple battery-driven applications, helping engineers simplify and accelerate their designs.

Each of the devices automatically selects buck, buck-boost or boost mode according to the operating conditions. Their complete solution size of 19.5 square mm to square mm 25 is a result of compact packaging, an advanced control topology requiring few external multilayer ceramic capacitors, and tiny 0.47-microH inductors.

The devices offer a 1.3-V to 5.5-V input and 1.8-V to 5.2-V output voltage range, to help engineers speed their designs and encourages reuse across multiple applications.

These DC/DC converters are the latest addition to TI’s low-IQ power-management portfolio, providing low 11- to 15-microA IQ for light-load efficiency while minimising power losses and extending run times in battery-driven applications such as portable electronic point-of-sale terminals, grid infrastructure metering devices, wireless sensors and handheld electronic devices.

The TPS63802 is a 2-A buck-boost converter with low 11-microA IQ consumption suitable for pulsed-load applications such as industrial Internet of Things devices. The TPS63805 is a 2-A buck-boost converter with a 22-microF output capacitor and 0.47-microH inductor resulting in a small solution size of 19.5 mm squared that meets the requirements of handheld industrial and personal electronics applications.

The new series also includes the TPS63806, a 2.5-A buck-boost converter with a focus on improved load-step regulation for applications with an aggressive load profile that require tight regulation, such as time-of-flight sensors in smartphones, cameras or augmented reality devices. And the

TPS63810 is a 2.5-A buck-boost converter with I2C interface for dynamic voltage scaling through either a two-wire interface or the VSEL pin, enabling the device to serve as a pre-regulator or voltage envelope tracker for systems found in smartphones, wireless hearing aids or headphones.

http://www.ti.com

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QuickLogic partners with Nuance Communications for voice recognition

Fri, Sep 13, 2019

Multi-core, voice-enabled SoCs, embedded FPGA IP, and endpoint AI provider, QuickLogic is partnering with conversational AI and ambient intelligence specialist, Nuance Communications, to deliver low power, wake word and voice command technology for power-sensitive applications, such as hearable and wearable devices.

Nuance’s voice recognition technology and QuickLogic’sEOS S3 voice and sensor processing platform will provide customers an end-to-end, reliable hardware and software voice recognition solution, says QuickLogic.

The low power Nuance voice recognition technology has been integrated with QuickLogic’s advanced EOS Voice and Sensor Processing SoC. The SoC’s architecture is claimed to enable the industry’s most advanced and compute intensive sensor processing capability at a fraction of the power consumption of competing technologies.

The Nuance technology provides the performance and low power consumption required for always-on wake word detection, and specifically supports the Alexa wake-word protocol. Technical enhancements enable it to improve voice recognition accuracy in difficult or noisy environments.

The integrated system supports always-on, always-listening fixed triggers, user defined triggers and phrases, and commands that can be accurately detected in silent to extremely noisy environments.

Scott Haylock, director of product marketing at QuickLogic, explains:”In response to customer demand, and the growing hearables market, we’ve augmented the EOS S3 OPEN Software Platform to include Nuance’s technology. This addition helps QuickLogic address the largest possible product mix of new and existing voice-controlled end-products.”

The EOS S3 platform with integrated Nuance voice processing is available now.

QuickLogic is a fabless semiconductor company that develops low power, multi-core semiconductor platforms and IP for artificial intelligence (AI), voice and sensor processing. It supplies embedded FPGA IP (eFPGA) for hardware acceleration and pre-processing, and heterogeneous multi-core SoCs that integrate eFPGA with other processors and peripherals. The Analytics Toolkit provides sensor algorithms using AI technology.

http://www.quicklogic.com

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Bluetooth low energy module from u-blox includes direction finding

Nordic introduces Bluetooth 5.1 SoC for multi-protocol applications

Adaptable buck-boost converters deliver up to 2.5A in tiny packaging

QuickLogic partners with Nuance Communications for voice recognition

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