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

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

nokia e97


Nokia E97 is a concept design by Fabien Nauroy, shows an incredible thought and a stylish phone. This concept phone has a complete keyboard in an AZERTY layout and there is a small LCD display above the keyboard. This envelop like design aims to set a limit between professional and personal life. The included leather case contains a second pocket to hold an additional screen. The parcel post like packaging of this phone has made it even more attractive and the best part of this concept phone is the futuristic pull-out LED display that can be used as a storage device and can create and share files or pictures.





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