Ritec - Model PA 101C and PA 101C/HV -Charge-Sensitive Preamplifiers for Gamma Spectroscopy

The PA 101C and PA 101C/HV are miniature, low noise, charge-sensitive preamplifiers specifically designed for gamma spectroscopy applications. These devices are optimized for use with semiconductor detectors such as CdTe, CdZnTe, and HgI2 at room temperature. They offer outstanding noise performance, achieving less than 2 keV of noise with zero input capacitance at a 1 µs shaping time. This makes them suitable for pairing with large volume CdZnTe detectors like the CZT/500 and CZT/1500. The preamplifiers integrate bias filtering and protect the input circuit, ensuring reliability under varied conditions. They provide a charge sensitivity of at least 0.2 mV/keV and maintain integral nonlinearity within 0.1% across an energy range from 60 keV to 1.33 MeV. The gain stability is high, with temperature variance limited to ±0.025%/°C within the 0 to +50°C range. Key features include rapid rise time, with capabilities under 100 ns for systems with minimal input capacitance, an output swing range of ±1 V, and effective cabling up to 30 meters.