Integrated amplifier arrangement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 24, 2001
Grant Date -
N/A
app pub date -
Nov 26, 1999
filing date -
Nov 27, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
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. The one amplifier stage is thereby preferably low-resistance linked to the reference potential connection if the input voltage available at the amplifier input of the other amplifier stage has a d. c. voltage working point, with which this other amplifier stage is activated.
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