Patent ID: 7167655

Claim:
A measurement system for providing an output signal proportional to an input signal (Ip) over a wide dynamic range comprises a first amplifier unit ( 10 / 1 ) having a first gain (G 1 ) and a second amplifier unit ( 10 / 2 ) having a second gain (G 2 ) that is different from the first gain, both amplifiers being connected to receive the input signal in common and, in operation, to provide a first signal (V 1 ) and a second signal (V 2 ), respectively, each proportional to the input signal, and a control unit ( 16 / 1 , 16 / 2 , 18 / 1 , 18 / 2 , 20 ) for selecting the first and second output signals alternatively as an output signal of the measurement system and in dependence upon the amplitude of the input signal.