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 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

Gallery

Specifications

Basic

Noise, based on CdTe equivalent at 1 µs shaping time and operation temperature +22 °C
- with input capacitance 0 pF ≤ 2 keV
- with input capacitance 10 pF ≤ 3 keV
Charge sensitivity, based on CdTe equivalent ≥ 0,2 mV / keV
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 30 m
Output impedance 50 Ω
Detector bias isolation
- for PA 101C ± 2000 V
- for PA 101C/HV ± 3000 V
Bias filtering yes
Input circuit protection yes
Power requirement + 12 V, 18 mA; - 12 V, 12 mA

Connectors

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

Dimensions

PA101C
- Diameter 23,0 mm
- Length without connectors 67,5 mm
PA101C/HV
- Diameter 29,0 mm
- Length without connectors 89,5 mm
Connecting cable length ** 0,3 m
* other connectors types are available ** other connecting cable lengths up to 30 m are available