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The gain or programming amplifier PCB circuit diagram

2015-01-02 13:30  
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The gain or programming amplifier PCB circuit diagram
As shown in figure, the amplifier circuit can respectively provide 1, 10, 100, 1000 magnification factors under four kinds of logic level control, and each magnification bandwidth is greater than 30kHz, the entire circuit's current is less than 7mA under± 5V supply.