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Working with SODAR Applications-Pre amplifier design

Dear TI Associates,

I am working on Sound detection and Ranging applications...

I am having the following queries...

Please help me out in designing the system.

1.Input from the duplexer (Antenna)-Order of Few  micro Volts

2.Needed to be band limited in Audio Range may be up to 8 KHz (Band Pass filter to be designed)

3.Required a Stable Operational Amplifier Based Pre-amplifier which is to be connected to PC Sound card (Microphone)- Impedance Matching is Important..

4.Works continuously for 24*7 (Needed to be more real time working functionality-(Heat Sinking)

5.Latest Good Stabilized Operational amplifier needed other than conventional laboratory OPAMPS.