Nuclear radiation
Semiconductor detectors
and Associated electronics

Charge Sensitive Preamplifiers

PA 101C
PA 101C/HV

Preamplifier Model PA 101C and PA 101C/HV is a miniature, low noise, charge-sensitive preamplifier for gamma spectroscopy with room-temperature-operated semiconductor detectors (CdTe, CdZnTe, HgI2). These preamplifiers can be used with Large Volume CdZnTe Detectors CZT/500(S) and CZT/1500. The preamplifier scheme includes bias filtering and input circuit protection.

Features

  • Small dimensions and weight
  • Low noise
  • Low consumption power
  • Input circuit protection
  • Bias filtering

Applications

  • Gamma ray spectrometers
  • Portable instrumentation
  • Room temperature semiconductor detectors

Specifications

Basic

  • Noise, based on CdTe equivalent at 1 µs shaping time and operation temperature +22 °C
    • with input capacitance 0 pF ≤ 3 keV
    • with input capacitance 10 pF ≤ 4 keV
  • Charge sensitivity, based on CdTe equivalent ≥ 40 mV / MeV
  • Integral nonlinearity (60 keV … 1.33 MeV) ≤ 0.1%
  • Gain stability (0 … +50 °C) ± 0.025% / °C
  • Rise time
    • with input capacitance 0 pF ≤ 100 ns
    • with input capacitance 10 pF ≤ 150 ns
  • Output swing range ± 1 V
  • Cable driving capability up to 20 m
  • Output impedance 50 Ω
  • Detector bias isolation
    • for PA 101C ± 1500 V
    • for PA 101C/HV ± 3000 V
  • Bias filtering yes
  • Input circuit protection yes
  • Power requirement + 14 V, 18 mA; - 12 V, 12 mA

Connectors

  • Input
    • for PA 101C BNC
    • for PA 101C/HV SHV
  • Output 5-pin LEMO (male)

Dimensions

  • Diameter 23 mm
  • Length (without connectors) 65 mm
  • Connecting cable length 20 cm