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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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ASSEMBLING AND EXECUTING THE PROGRAM

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Writing an ALP
Assembly level programs generally abbreviated as ALP are written in text editor EDIT.
Type EDIT in front of the command prompt to open an untitled text file.
EDIT<file name>
After typing the program save the file with appropriate file name with an extension .ASM
Ex: Add.ASM
Assembling an ALP
To assemble an ALP we needed executable file calledMASM.EXE. Only if this file is in
current working directory we can assemble the program. The command is
MASM<filename.ASM>
If the program is free from all syntactical errors, this command will give the OBJECT file. In
case of errors it list out the number of errors, warnings and kind of error.
Note: No object file is created until all errors are rectified.
Linking
After successful assembling of the program we have to link it to get Executable file.
The command is
LINK <File name.OBJ>
This command results in <Filename.exe> which can be executed in front of the command
prompt.
Executing the Program
Open the program in debugger by the command (note only exe files can be open)by the
command.
CV <Filename.exe>
This will open the program in debugger screen where in you can view the assemble code
with the CS and IP values at the left most side and the machine code. Register content
, memory content also is viewed using VIEW option of the debugger.
Execute option in the menu in the menu can be used to execute the program either in
single steps (F8) or burst execution (F5).