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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

WAP to convert given hex no. to equivalent decimal no.

org 0h
start:
mov dptr,#5fffh
movx a,@dptr
mov 0f0h,#064h                ;Load B reg with 100d or 64h
div ab                              ;Hundreds
inc dptr
movx @dptr,a            ;store in external ram
mov a,0f0h                 ;remainder from b reg to acc
mov 0f0h,#0ah          ; Load B reg with 10d or 0ah
div ab;
inc dptr;
movx @dptr,a            ;store tens in external ram
inc dptr
mov a,0f0h
movx @dptr,a               ;store units in ext ram
here: sjmp here
end