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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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Archos 35 Home Connect.

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Archos intends to further push the envelope when it comes to technological boundaries as well as innovation with the introduction of their latest device, the Archos 35 Home Connect.
This is an Android-powered web radio that was specially designed for the home user. Touted to be the most advanced Android-based web radio in the market (which makes perfect sense after all, since how many web radios that run on the Android OS do you see hanging around store shelves, virtual or otherwise?), the Archos 35 Home Connect is perfectly sized to deliver streaming radio and music anywhere at home, ranging from the bedroom to the kitchen, bathroom or kids room.
Being diminutive in size certainly makes it a whole lot easier to tote around, and the Archos 35 Home Connect will boast Wi-Fi connectivity as well as amazing audio quality, once again lending wisdom to the adage that one ought not to judge a book by its cover – and in this case, the audio quality by its size. Let us take a close look at what the Archos 35 Home Connect is able to deliver after the jump.