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Subject: Design an preamplifier for oscilloscope to provide balanced or differential inputs when used with an osscilloscopewith a single-ended or unbalanced input
Posted by: luan dang
E-mail: luandang(at)bigpond(dot)com(dot)au(no spam)
Hi,I have trouble to design these. Could anyone help me please. Any idea how to design or any relative reference ? Below the design specification:
- the preamp. need to provide gain from 1 to 100
- the frequency reponse of the preamp. extend from DC to 5 MHz or greater with an output load of 1 M Ohm in parallel with 5 pF capacitor.
- each differential input can handle a max. input of +- 10V. Input impedance should greater than 100K Ohms. The max output voltage without overloading or distortion should be +- 10V
- the preamp is operated by 9V dc power supply
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