Abstract: In the field of telecommunications, there is frequently a need to deactivate two amplifier stages alternately. In order to do this, the amplifier stages are usually triggered in push-pull mode over separate control lines. Such control lines allow the undesired coupling-in of interference in the amplifier stages and in following circuit elements, particularly in high-frequency applications. The new amplifier arrangement enables two amplifier stages to be alternately deactivated and has a high degree of immunity to high-frequency interference. It is realized as an integrated circuit and has, alongside the two amplifier stages, a switching stage over which the one of the two amplifier stages can be low-resistance linked on the input end to a reference potential connection having reference potential and can be deactivated through this.