The design of the program-controlled high frequency gain preamplifier and its application in medical instruments
Peng Hong · Information of Medical Equipment · 2003
This article introduces the design of two types of the program-controlled high frequency gain preamplifier for the project of medical ultrasonic dynamometer,by using the ultrasonic signal's characters of high frequency and wide range ultrasonic power.Its application in clinic proves that the amplifier consist of discrete units and the amplifier consists of ICs are almost the same for having small volume,low dissipation,simple structure and so on,but the former is batter than the latter for having low signal distortion,thus the former is recommended.