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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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mini-fm-transmitter-using-max2606

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With MAX2606 you can make a Mini mono FM transmitter. It is built with MAX2606 and covers at least 20 meters with 1.5 m length of copper wire antenna. You can use this transmitter as an oscillator, but change the 1000pF capacitor of the antenna with 15pF.



MAX2606 transmitter output power is-10dBm, which means something around 100uW (micro-watts) = 0.0001. Of course this is very low, so it is recommended the use of auxiliary power amplifier, if you want to build a more powerful transmitter based on MAX2606. You can find a power amplifier in a few fm electroschematics.com so please use the search box.

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