16/32 Channel charge sensitive preamplifier
A1442
The CAEN Mod. A1442 is ideally suited for single or double sided multi-strip silicon detectors as well as for multi-channel detectors with common Bias. Its compact size and low power consumption make it ideal for direct detector coupling in a high vacuum system. It is available in both 16-channel (A1442A) and 32-channel (A1442B) versions.
Preamplifier output signals are in true differential supporting low-cost twisted flat cables for the output connection.
The preamplifier also provides a SUM output of the 16-channels, allowing the user to calculate the timing of pulse shape measurements of the complete strip from a single signal. Preamplifier sensitivity can be easily changed by a factor of 5 by way of a simple jumper on the front panel. The 32-channel version (A1442B) can be operated as two independent 16-channel preamplifiers with separate Voltage-Bias and Test inputs and two separate SUM outputs.
A customization is available to improve amplifier protection from transients at detector input connection.
Features
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16 channel or 32 channel Version available
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x1 or x5 sensitivity switchable via font panel jumper
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Maximum output voltage +/- 4,5 VDiff:
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200 MeV (Si) @ 1X
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40 MeV (Si) @ 5X
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Dimension (mm): 100 x 50 x 130
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Input bias voltage (+/- 400 V Max) (1/2 LEMO 00 connector);
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ESD input protection
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TEST pulse input with inversion or non inversion buffer (1 or 2 LEMO 00)
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Low power consumption for in vacuum use (< 1000 mW for 16 ch. version)
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True Differential output (with 100 Diff. back termination)
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1 or 2 Sum output, each sum of 16 channel
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Noise < 5 KeV on 0 pF input and < 23 eV/pF slope
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Rise Time < 10 ns @ 0 pF, < 20 ns @ 200 pF
A1442: Data Sheets
A1442: Download
Application Notes
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