CMOS Preamplifier with High Linearity and Ultra Low Noise for X-Ray Spectroscopy

@inproceedings{OconnorCMOSPW,
  title={CMOS Preamplifier with High Linearity and Ultra Low Noise for X-Ray Spectroscopy},
  author={Paul O’connor and Giuseppe Gramegna and Pavel Rehak and Francesco Corsi and Cristoforo Marzocca}
}
We report here an ultra low noise charge sensitive monolithic CMOS amplifier (CSA) suitable for small anode capacitance (200fF), low leakage current solid state detectors. The CSA is continuously sensitive, the charge from the input node being drained by a feedback transistor Mf biased as a resistor with effective values in the GΩ range. This very high value was achieved by a novel scheme which tracks threshold variations, and power supply and temperature fluctuations. A good linearity of the… CONTINUE READING

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