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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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WAP to find the cube of the number in the range 0h to fh

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org 0h
mov r0,#20H
mov a,@r0                 ;num in 20h is loaded into acc and b reg
mov 0f0h,a
mul ab                         ;find the square of the no.
mov 0f0h,@r0
mul ab                       ;multiply square of the no. by the no.to get the cube.
mov 030h,a                   ;lower order product in 30h
mov 031h,0f0h               ;higher order product in 31h
here: sjmp here
end