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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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LG Optimus 3D Cube

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We're not sure if the world was anxiously awaiting a follow-up to LG's Optimus 3D (the AT&T Thrill 4G here in the states), but here it is: the LG Optimus 3D Cube. Only announced for Korean carrier SK Telecom so far, the Optimus 3D Cube is slightly thinner than its predecessor at 9.6mm vs. the Thrill 4G's 11.9mm, with a faster 1.2GHz dual-core CPU and 16GB of storage built-in, confirming most of the rumors we'd heard previously. According to LG, it will also be the world's first that can handle 3D photo and video editing right on its glasses-free 4.3-inch screen, all shot by the dual 5MP cameras mounted on the back. It also has NFC baked in to support the new LG Tag+ stickers that change the phone's settings when swiped, just like the Optimus LTE Tag. It's scheduled for release in early March with Android 2.3 and although we didn't see it mentioned in the Korean press release, is likely looking forward to a quick Ice Cream Sandwich makeover just like its cousin, the Optimus Vu. Check out the machine-translated specs and press release after the break, there should be a native English version along soon and of course, we'll be getting a look firsthand when Mobile World Congress kicks off on the 27th.

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