Wednesday, October 22, 2014

Silicon Labs C8051F97x capacitive sense MCUs in stock at Mouser

TAIWAN: Mouser Electronics Inc. is now stocking the C8051F97x low-power capacitive sense microcontrollers from Silicon Labs.

Boasting a sleep current as low as 55nA, the new C8051F97x microcontroller (MCU) family is based on a high-speed pipelined 8051 core that is enhanced with the addition of a single-cycle 16x16 Multiply Accumulate (MAC) unit.

The C8051F97x family targets touch user interfaces with its capacitive sense interface, allowing the detection of virtual buttons, sliders, and wheels as well as proximity sensing.

The Silicon Labs 8051F97x Low-Power Capacitive Sense Microcontrollers, available from Mouser Electronics, are fully integrated mixed‑signal microcontrollers. The devices include up to 32KBytes of Flash that is programmable in 512Byte sectors, and up to 8.25KBytes RAM.

A 10‑bit analog to digital converter (ADC) can capture signals up to 300ksps. The chips can operate with a 1.8V to 3.6V supply voltage and have seven power modes: In Active Mode, the device draws only 200µA/MHz. In the lowest power mode, Sleep Mode, the microcontroller draws as little as 55nA and can wake up on an oscillator failure, SmarRTClock timer event, or on an I2C address match.

The capacitive sense unit uses a capacitive‑to‑digital circuit to determine the capacitance present on a port pin. An internal analog multiplexor allows the unit to take measurements from different port pins. The unit can be configured to take capacitance measurements from one port pin or a group of ports pins.

A selectable gain circuit allows the developer to adjust the maximum allowable capacitance. A 22‑bit accumulator is built into the capacitance sense unit, which can be configured to average multiple conversations from a single input pin.

For security applications, each microcontroller contains a 128‑bit unique key to specifically identify each device. The C8051F97x MCUs boast an on-chip debugging interface that provides non‑intrusive, full-speed, in‑circuit debugging of the microcontroller while operational. The debugging interface uses no on‑chip resources and does not interfere with running code.

The C8051F970 Development Kit, also available from Mouser Electronics, provides a complete evaluation and development platform for C8051F97x microcontrollers. The board supports capacitive sensing applications and contains all the hardware and software needed to begin developing projects using the C8051F970 microcontroller.

AR and MVG sign MoA to provide turnkey solutions

PARIS, FRANCE: AR brings its brand name, experience, and extensive line of EMC and RF/microwave products to marry with MVG installation expertise and diverse product range, starting with MVG-EMC shielded anechoic chambers, shielded rooms and absorbers products, to deliver quality, high performance turnkey products for EMC and other markets.

Philippe Garreau, CEO of MVG, states:"AR and MVG have built a strong relationship and understanding of their customers. By combining our product lines and this knowledge, we will be able to offer a one-stop shop of quality, tailored, EMC solutions."

Don (Shep) Shepherd, chairman AR, adds: "AR has an enviable reputation in the EMC Test System business. The knowledge and experience of our systems engineers combined with our extensive range of EMC instrumentation means the addition of MVG-EMC Anechoic test chambers will allow us to supply state of the art solutions and offer unrivalled support to our customers."

Tuesday, October 21, 2014

TRINAMIC motor drivers at work

HAMBURG, GERMANY: —TRINAMIC Motion Control, a leading global developer of motor and motion control technologies, revealed its patent-pending technology for stepper motors. Dubbed stealthChop, the new technology significantly reduces the noise of conventional stepper motor operation.

Motors operating at low speed exhibit a phenomenon known as magnetostriction, which causes an audible low frequency ‘hum.’ This low-frequency noise is well known as the 60Hz hum that emanates from transmission lines and transformers. Trinamic’s stealthChop minimizes magnetostriction by implementing a PWM algorithm that relies predominantly on voltage modulation for motor control at lower speeds. This technology minimizes PWM current fluctuation, which is the primary cause of low-speed hum.

“Stepper motors used in automation must respect the needs of their human overlords. The continuous noise of individual stepper motors in a laboratory environment may be rather distracting, and the din from hundreds of stepper motors in an industrial implementation can be deafening,” explained TRINAMIC R & D chief, Dr. Stephan Kubisch.

“Our customers asked Trinamic to perfect a commutation scheme for lower step frequencies that reduces noise. We made it self tuning, easy to use and added an automated switch to transition to higher frequencies.“

Noise limitations are especially desirable in applications that normally occur in close proximity to human operators, in applications where multiple stepper motors are in use, in video surveillance applications where installations near walls and ceilings amplify noise, and in consumer applications, like home automation and air conditioning, where users expect minimal noise.

FCI intros BarKlip cable I/O

SINGAPORE: FCI, a leading supplier of connectors and interconnect systems, announced the release of the BarKlip I/O Power Connector.

The BarKlip I/O connector, rated for up to 200Amps/contact per UL & CSA criteria, offers improved electrical performance and long-term reliability compared with alternative designs.

The connector is designed to connect with a system rack bar to achieve a direct pluggable connection to an uninsulated busbar. The connection generates low energy loss with a maximum resistance of only 0.2mOhms per contact.

The BarKlip I/O Connector features 14 fully independent cantilevered beams, which provide a true compliant spring to adjust for variations in busbar alignment and surface finish. In addition, the BarKlip I/O connector is a floating panel mount design.  An installed height of <34mm 1u="" and="" architectures.="" commonly="" computing="" datacenters="" enables="" equipment="" found="" hyperscale="" in="" nbsp="" new="" p="" rack-mounted="" their="" use="">
The available wire range is 14AWG to 2AWG, allowing users to define the wire gauge and length flexibly in terms of actual requirement. The BarKlip I/O Connector is designed to operate between -40°C and 125°C.

“The BarKlip I/O Connector provides a convenient, low voltage loss and highly reliable method to connect to many of FCI’s busbar power distribution solutions” says Michael Blanchfield, Portfolio director for Power Solutions at FCI.

“FCI’s proprietary plating technology adds an additional benefit to customers by providing maximum conductivity and longer-term reliability without concerns for corrosion. We are confident the BarKlip products will meet many of our customers’ demands for high reliability in direct connect busbar applications.”

Monday, October 20, 2014

Ideal Power intros 125kW power converter family

AUSTIN, USA: Ideal Power Inc. announced its 125kW converter family, including a three-port hybrid converter and two-port battery converter.

Utilizing the same award-winning technology as its 30kW hybrid converter, the 125kW converter products are expected to lower costs and improve efficiency for integrating photovoltaic (PV) and energy storage solutions up to megawatt scale, as well as provide off grid and grid resilient (grid-tied battery backup) capabilities.

Ideal Power also announced that it has received an initial order for its 125kW hybrid converter from CODA Energy, a California based manufacturer and installer of commercial and industrial energy storage products. Ideal Power will display its new 125kW hybrid converter at the Solar Power International Conference, booth #2658, in Las Vegas on October 20 - 23, 2014.

"The mutual benefits of deploying battery storage with PV are well known 'off-grid,'" stated Peter Nortman, COO, CODA Energy.

"The argument to deploy storage with PV 'on-grid' is perhaps even more compelling to a resilient and sustainable energy future. We expect Ideal Power's 3-port hybrid architecture to help us meet our customer's needs in this important market space due to its comprehensive feature set and compact, efficient design."

According to information, insight and analytics firm IHS, commercial grid-tied battery inverters co-sited with PV is forecasted to grow from 36 MW of global installations in 2014 to 643 MW by 2018 and the off grid micro-grid battery inverters co-sited with PV market is forecasted to grow from 34 MW of global installations in 2014 to 400 MW by 2018.

Friday, October 17, 2014

SparqEE boards available exclusively from RS Components bring cellular connectivity to Raspberry Pi and Arduino

BEIJING, CHINA: RS Components is now taking orders for the new SparqEE development boards, which have been designed to enable easy cellular connectivity and Internet access for projects based on theRaspberry Pi and Arduino boards.

A total of seven new SparqEE boards are available to order exclusively from RS, including the CELLv1.0 -- a tiny cellular development board that implements a 2G+3G chipset to provide wireless worldwide.

This means, the CELLv1.0 module will use 3G primarily and only revert to 2G when 3G is not available. In addition, the CELLv1.0 measures only 36 x 42 x 7mm, making it the smallest cellular module currently available on the market.

Each SparqEE CELLv1.0 cellular board will be shipped from RS with a global 3G SIM card that delivers worldwide coverage. Users will then be able to login to a website and use their credit card to buy data or set up a direct debit for on-going data usage.

The increase in range permitted by cellular communications enables a number of potential applications for developers and is ideal for 'small data' projects that need to operate over very long distances, even potentially to another country or continent. Suitable projects are likely to be sensor-based low-bandwidth-data projects that will send low amounts of data over the Internet.

To enable easy compatibility, as part of the new range, the ShieldRv1.0 and ShieldAv1.0 are shields or adapters that connect the CELLv1.0 respectively to Raspberry PI and Arduino boards without any additional wiring. In addition, breakouts are provided for the four remaining SparqEE boards should users prefer to connect any of these boards directly to the shield.

The four additional boards are the: GPSv1.0 receiver board, which implements an Antenova M10478 GPS module based on the SiRFstarIV 9333 GPS chipset; the POWERv1.0 board, which converts an unregulated power supply to the +5V and +3.3V supply rails required by most embedded development systems; the RELAYv1.0 board, which provides a wide input range relay for driving high-current and high-voltage peripherals; and finally the ACCELv1.0 board, which provides a wide-input-range Analog Devices ADXL345 three-axis accelerometer.

Coverage specifications of the CELLv1.0 module include WCDMA/HSDPA 2100/1900/900MHz, delivering 384Kbps or DL3.6Mbps HSDPA and GSM/GPRS/EDGE 850/900/1800/1900MHz. Wired connectivity options include a serial UART interface (3.3V or 5V) and USB 2.0 interface.

Electrical specifications include an input voltage of +3.7V to +5V, powered via USB cable or via the header pins; current draw of less than 5mA in standby, typically less than 75mA active (without services), and less than 500mA (average working) and 2.3A maximum. Windows, Linux and Android software drivers are available via ZTE.

Thursday, October 16, 2014

See the light with Vishay’s VCNL4010 proximity and ambient light sensor

TAIWAN: Mouser Electronics Inc. is now stocking the VCNL4010 proximity and ambient light sensor from Vishay Semiconductors. Broadening its already popular VCLN optoelectronics portfolio, the VCNL4010 offers 16-bit resolution in a fully integrated proximity and ambient light optical sensor.

The device features a power-saving interrupt function, infrared emitter, a signal processing IC and a standard I2C communication interface. The 16-bit resolution of this sensor makes it accurate enough for proximity detection while providing excellent cross talk immunity. The VCNL4010's programmable LED drive current senses distances of up to 200mm.

The Vishay Semiconductors VCNL4010 proximity and ambient light sensor, available from Mouser Electronics, combines an infrared emitter, photo-pin-diode, ambient light detector, signal processing features, and 16‑bit analog-to-digital converter (ADC) all in one compact package. The power-saving interrupt function enables the sensor to stay idle until a predefined proximity or ambient light event occurs, thereby triggering and waking up the chip.

The sensor offers 100Hz and 120Hz flicker noise rejection, and the built-in ambient light photo‑pin‑diode offers sensitivity close to that of the human eye, with a 16-bit dynamic range for ambient light detection from 0.25lux to 16klux. The sensor offers a Moisture Sensitivity Level (MSL) of 3, and operates over a temperature range of -25°C to + 85°C. Other features of the VCNL4010 include a low stand‑by current consumption of 1.5μA and a supply voltage range of 2.5V to 3.6V.

The VCNL4101 is ideal for a variety of mobile, lighting, industrial and sensor applications. From smartphones, touch phones, PDAs, GPS units and digital cameras, to computing and industrial devices and displays, the VCNL4010 is an ideal solution for any designer looking for a fully-integrated proximity and ambient light optical sensor.

The Vishay Semiconductor VCNL4010 is available in a compact, 3.95mm x 3.95mm x 0.75mm leadless (LLP), surface-mount package. The device is compliant to RoHS directive 2002/95/EC and WEEE 2002/96/EC, is free of halogens, and is compatible with lead (Pb)-free soldering.