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LT1001XH/883_Analog Devices, Inc._Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

来源:LM317 Electronics Components编辑:Power Amp Design时间:2021-06-15 14:03:02

The company plans to refocus its product range to the areas where it currently is most successful: Graphic DRAM and memory chips for servers, which as non-commodity products are less affected by the ongoing DRAM price decline. The refocusing process includes reducing its PC-related DRAM production. In terms of technology, the company plans to emphasize its Buried-Wordline transistor architecture.

PORTLAND, Ore. — A new optical fiber material could enable laser-based devices to be built operating at multiple frequencies.

LT1001XH/883_Analog Devices, Inc._Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The new material–cesium zirconium phosphorus selenium (CsZrPSe6)–can add, subtract and double laser beam wavelengths, enabling devices with two laser sources to produce many usable wavelengths.

Lasers today are basically limited to six frequencies, but our new material will double any frequency in the far visible and the near-infrared and infrared,” claimed Argonne National Laboratory scientist Mercouri Kanatzidis. It not only doubles frequencies, but when you use two lasers to put in two frequencies, you also get out their sum and difference. So with two lasers you could generate all the frequencies.”

Argonne researchers claim the new technology could be used in sensors that detect biological and chemical weapons.

LT1001XH/883_Analog Devices, Inc._Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

After combining zirconium, phosphorus and selenium they found that the new material acquired the optical doubling, adding and substracting abilities with the addition of either potassium, rubidium or cesium. Although the four-element compounds all had similar properties, the most successful of these compounds was CsZrPSe6.

This compound is made with heavy elements–selenium, zirconium and cesium–elements that couple to light much more effectively, causing their harmonics to be much more intense, so the efficiency with which this material produces second harmonics is much, much higher than anything we have seen before,” said Kanatzidis.

LT1001XH/883_Analog Devices, Inc._Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The new compound produced frequency-doubled beams 15 times more intense than those produced by the best commercial materials today, according to Kanatzidis.

The laboratory studied the structure of the new material using its Advanced Photon Source (APS), a synchrotron X-ray research facility funded by the U.S. Energy Department. They found that the new material naturally grows in long individual fibers. The growth rate for the fiber's lengthwise dimension is very rapid, but growth in diameter is much slower–the perfect combination for growing optical fibers.

Flomerics rejects $50 million bid from Mentor

Two schottky rectifiers have been introduced that responds to demand for thinner yet more powerful devices. NXP Semiconductor has added the SOD123W and SOD128 to its MEGA series of schottky rectifiers. The two devices are half the height of SMA packaged schottky rectifiers – the SOD123W is 2.6mm x 1.7mm x 1mm; and the SOD128 is 3.8mm x 2.5mm x 1mm.

The MEGA Schottky rectifier range was designed to meet low-voltage and mobile applications, such as power management circuits, DC/DC converters, step down and synchronous converters, and free-wheeling diodes for inductive load in motors and relays. The latest additions, which are approved to the AEC-Q101 standard and are therefore suitable for automotive and industrial applications, claim a peak current of more than 50A and power dissipation up to 1W. They are footprint-compatible to SMA and SMB packages and are thus suitable as drop-in replacements.

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