A description is given of a circuit arrangement with a resistor voltage
divider chain which comprises a number N of two-terminal resistors which
are connected in series between a number N+1 of connection points, with N
being greater than or equal to 2. In order to monitor the operating state
of the resistor voltage divider chain, there is proposed an arrangement
having at least two comparator stages with in each case two input
terminals, each of which is connected to in each case one of the
connection points such that each of the resistor elements is bridged by
the input terminals of at most one of the comparator stages, and with in
each case one output terminal for outputting a comparator output signal
having a first logic level when corresponding signals are fed to the
input terminals and otherwise having a second logic level, and a
switching stage which has in each case one input terminal for connection
to each of the output terminals of the comparator stages and is designed
to form an error signal by logic switching of the comparator output
signals in order to indicate an error when at least one of the comparator
output signals has a first logic level.