关键词: programmable gain amplifier, PGA, MAX532, programmable gain, programmable resistor, ac gain control
Abstract: This application note discusses how to use the MAX532 to build a programmable gain amplifier (PGA) that's suitable for AC gain control. No external components are necessary. Equations are provided to easily calculate the output values.
Programmable-Gain Amplifier, Using the MAX532 DAC.pdf 
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