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A new approach was developed for the design of front-end circuits forsemiconductor radiation detectors. The readout scheme consists of a first stagemade of only a few components located close to the detector, and of a remotesecond stage located far from the detector, several meters away. The secondstage amplifies the signals from the first stage and closes the feedback loopto discharge the input node after each event. The circuit has two outputs: onegives a "fast" signal, with a bandwidth larger than 20 MHz, allowing topreserve the high frequency components of the detector signals, which may beuseful for timing measurements, pile-up rejection or pulse shapediscrimination. The second output gives a "slow" signal, whose gain dependsonly on the value of the feedback capacitor, as happens with a classic chargesensitive amplifier, allowing to obtain higher resolution and lower drift. Theprototype was named GeFRO for Germanium front-end, and was tested with a BEGedetector from Canberra. The wide bandwidth of the "fast" signal gave a timingresolution of the order of 20 ns. The noise of the circuit at the "slow" outputafter a 10 us Gaussian shaping was close to 160 electrons RMS with an inputcapacitance of 26 pF.

GeFRO: a New Charge Sensitive Amplifier Design with a Minimal Number of Front-end Components