Appeal No. 1997-3437
Application 08/315,740
In a telecommunication system, a voltage line driver
typically produces voltage signal pulses for transmission over
a telecommunication line having a transmission end and a
receiving end with respect to the line driver. Under normal
termination where a load is present at the receiving end of
the telecommunication line, the line driver typically operates
satisfactorily. However, when the load is removed or not
present at the receiving end of the telecommunication line,
the voltage signal line driver circuitry may be adversely
affected. The invention is concerned with ensuring
satisfactory operation of the voltage line driver even when
the receiving end of the telecommunication line is not
properly terminated due to improper load. The invention is
directed to a method and apparatus for stabilizing a line
driver having an amplifier by reducing the open-loop gain of
the amplifier when the current from the amplifier to the load
is less than a predetermined amount. The invention is further
illustrated by the following claim. Representative claim 24
is reproduced as follows:
24. In an integrated circuit, a line driver having an
output, comprising:
-2-
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