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High CMRR Instrumentation Amplifier (Schematic and Layout) design for biomedical applications

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Instrumentation amplifiers are intended to be used whenever acquisition of a useful signal is difficult. IA’s must have extremely high input impedances because source impedances may be high and/or unbalanced. bias and offset currents are low and relatively stable so that the source impedance need not be constant. Balanced differential inputs are provided so that the signal source may be referenced to any reasonable level independent of the IA output load reference. Common mode rejection, a measure of input balance, is very high so that noise pickup and ground drops, characteristic of remote sensor applications, are minimized.Care is taken to provide high, well characterized stability of critical parameters under varying conditions, such as changing temperatures and supply voltages. Finally, all components that are critical to the performance of the IA are internal to the device. The precision of an IA is provided at the expense of flexibility. By committing to the one specific task of
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Xiaomi Phone 2

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Xiaomi Phone 2:)

4.3-inch 720p IPS:)

quad core :)

Jelly Bean .... only for $310 :):)



finally, no more secret treasures from xiaomi,recently xiaomi Announced in Beijing just now is the Xiaomi Phone 2, and with the exception of the appearance, most of the high tech and advanced specs match to the leaks that we've come across previously .it features a  4.3-inch 720p IPS display by Sharp, Qualcomm's Snapdragon S4 Pro APQ8064 quad-core chip, 2GB RAM and 16GB memory. To power this upcomming beast, Xiaomi's throwing in a 2,000mAh cell batteries, but also you can purchase a 3,000mAh version if you don't mind the extra 2mm thickness on the phone. As for photography, you get a 28mm two-megapixel imager from the front facing camera along with a 27mm F2.0 eight-megapixel BSI camera on the back panel.




The good news is still yet to reveal. On the software front Xiaomi's decided to jump straight to Android Jelly Bean for the phone's MIUI ROM, which itself packs several new features as well. Just to name a few the beast features itself with enhanced security, phone finder, Chinese voice assistant (apparently with 85 percent comprehension accuracy), more interactive and creative themes and 5GB of cloud storage service with online client.also both devices support WCDMA 850、1900 and 2100MHz.UI animation was slick.
As you can already see, all of this will cost you only ¥1,999 (about $310) -- the same as the original Xiaomi Phone announced this time last year -- when it launches in October, and local carriers China Unicom plus China Telecom will also be offering the DC-HSPA+ handset at subsidized prices. Interestingly, Xiaomi co-founder Lei Jun even admitted on the stage that the phone's raw cost is ¥2,350 ($370) per unit, so hopefully it'll go down sooner than later for his sake. But if ¥1,999 is still too much, there's also the ¥1,499 ($235) Xiaomi Phone 1S which, as we've already seen, is very much just the original Xiaomi but bumped up from 1.5GHz to 1.7GHz, along with a front-facing camera.

The Xiaomi Phone 2s already left pretty solid impressions on the spectators and the people. so get yourself ready to buy one for yourself once its launced in the markets to experiance the beast with mindblowing specs in the smartphone arena.

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