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EETE JUNE 2013

Select resolution from 8 to 16 bits in a USB oscilloscope Pico Technology has used reconfigurable ADC technology to offer a choice of resolutions from 8 to 16 bits in a single product; the company says this is the first time this facility has been popssible in an oscilloscope. Most digital oscilloscopes gain their high sampling rates by interleaving multiple 8-bit ADCs. Pico asserts that, despite careful design, the interleaving process introduces errors that always make the dynamic performance worse than the performance of the individual ADC cores. PicoScope 5000 Series scopes have a significantly different architecture in which multiple high-resolution ADCs can be applied to the input channels in different series and parallel combinations to boost either the sampling rate or the resolution. In series mode, the ADCs are interleaved to provide 1 Gsample/sec at 8 bits. Interleaving reduces the performance of the ADCs, but the resulting dynamic range (60 dB SFDR) is still much better than oscilloscopes that interleave 8-bit ADCs. This mode can also provide 500 MS/s at 12 bits resolution. Pico Technology www.picotech.com Single-chip sensorless, brushless DC motor driver spins motors instantly Texas Instruments has expanded the company’s sensorless, brushless DC (BLDC) motor driver portfolio with a new device designed for high efficiency and low noise, which requires a low external component count of only one capacitor. The DRV10963 is a 5-V, 3-phase sensorless BLDC motor driver that simplifies layout and reduces board space by 80 percent, allowing designers to create smaller, sleeker, more innovative designs. It includes integrated commutation logic, which enables instant motor spin with no code development, while its 180-degree pure sinusoidal outputs provide an efficient and quiet drive. The DRV10963 has a low operating range of 5.5 to 2.1 V, low RDSON of less than 1.5 ohm and ultra-low sleep currents extend battery life up to 25 percent compared to nearest competition in fans and portable, battery-powered personal health care and grooming devices, including electric razors and toothbrushes. The device provides the lowest quiescent current to further extend battery life – 15 uA compared to 30 uA for the closest competitor. Texas Instruments www.ti.com Miniature connector is 45% lighter than a D-sub An alternative to the D-subminiature connector, the microComp Quicklatch is a 100% composite miniature quick connector designed particularly for use on inflight entertainment (IFE) screens aboard commercial aircraft. It is 32% smaller and 45% lighter than a D-sub and can save as much as the equivalent of the weight of one passenger on modern civil aircraft. This miniature design, coupled with the use of composites, makes the microComp Quicklatch one of the lightest Connectors on the market. Fitted in passenger seat backrests, the connector is compatible with Gigabit Ethernet networks and sends signals to each video screen. Its nickel coating ensures the highest protection against lightning and electromagnetic interference and its design and shielding level allow it to support up to four 100 Mbps Ethernet lines with excellent performance. Connections are easy, with no screws and no risk of damaging the contacts even when feeling around for the socket. Souriau www.souriau.com www.electronics-eetimes.com - searches all electronics sites - displays only electronics results - is available on your mobile www.eetsearch.com


EETE JUNE 2013
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