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A1442

New

16/32 Channel charge sensitive preamplifier

  • 16 channel or 32 channel Version available
  • x1 or x5 sensitivity switchable via font panel jumper
  • Maximum output voltage +/- 4,5 V Diff:
    • 200 MeV (SI) @ x1
    • 40 MeV (Si) @ x5
  • Dimension (mm): 100 x 50 x 130
  • Input bias voltage (+/- 400 V Max) (1/2 LEMO 00 connector);
  • ESD input protection
  • TEST pulse input with inversion or non inversion buffer. (1 or 2 LEMO 00 )
  • Low power consumption for in vacuum use (< 1000 mW for 16 ch. version)
  • True Differential output (with 100 Diff. back termination)
  • 1 or 2 Sum output, each sum of 16 channel.
  • Noise < 4 KeV on 0 pF input and < 20 eV/pF slope
  • Rise Time < 5ns at 0 pF input

Overview

The 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 (coming soon 64-channel version).

Features:
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.

Technical Specifications

Packaging

Shielded Box
Dimension WxHxD (mm): 100 x 50 x 130

No. of Channels

16 / 32

Energy ranges

Sensitivity switch, factor 5:

  • 200 MeV (Si) @ x1
  • 40 MeV (Si) @ x5
Ouput

Differential (± 4.5 VDiff max )

Output Connector

17+17 PIN HEADER Male Output Connector; (1 for 16 ch. 2 for 32 ch.)

Input Connector

25 pin D-SUB female; (1 for 16 ch. 2 for 32 ch.)

Power Connector

9 pin D-SUB male

Vbias connector

LEMO 00 female (1 for 16 ch. 2 for 32 ch.)

Test connector

LEMO 00 female (1 for 16 ch. 2 for 32 ch.)

Switches

5+5 PIN HEADER 100 mils  for gain setting, test inversion setting, and Sum Output.

Ordering Options

Code Description
WA1442A020XA A1442A020 - 16 Ch. Charge Sensitive Preamplifiers 20 mV/MeV 
WA1442B020XA A1442B020 - 32 Ch. Charge Sensitive Preamplifiers 20 mV/MeV 
WA1442C020XA A1442C020 - 64 Ch. Charge Sensitive Preamplifiers 20 mV/MeV 

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