A Small System of Program-Controlled Amplification Amplifier Based on AD603.

This article provides a kind of programmable amplifiers AD603 as the main design of small systems. Input signal generated by the DDS integrated chip, the two integrated broadband amplifiers, low noise variable gain amplifier cascade from AD603, the maximum voltage gain up to 60dB, 10dB step adjustable gain control to achieve through the microcontroller. Debugging results show that the system can meet the basic needs indicators.