Low Noise Fast Rise Time Charge Sensitive Preamplifier
A1422CD
The CAEN Mod.A1422C/D is a 5 mV/MeV 8-channel preamplifier implemented into an alloy box and features SHV connectors for the DET/IN and HV/IN signals, 2 RJ45 for the differential outputs, LEMO connectors for the TEST IN and COM OUT and a cable with a D-type 9 pin male connector for the power supply. The module accepts both positive and negative input charge pulses and provide a differential output of ±5V max on 1 kΩ termination, and ±2.5V on 100 Ω back termination. A test input accepts positive and negative signals for calibration purposes. Moreover the sum of the 8 energy outputs, with 1 µs decay time, is available on the COM OUT output.
A customization is available to improve amplifier protection from transients at detector input connection.
Features
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Fast, low noise inverting preamplifier
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Gain 5 mV/MeV (Si equivalent)
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Positive or negative input signals
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8 input channels
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Up to 200 pF detector capacitance supported
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Up to 2000 V (positive or negative) detector bias voltage
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Low noise input stage composed JFETs diode protected
A1422C/D: Download
Application Notes
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