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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
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.
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Compare
|
Image
|
Name
|
Package
|
Out Conn.
|
In Conn.
|
Test Capac. (pF)
|
Max Detector Bias Voltage (V)
|
Integral Non-linearity
|
Output Linear Range (V)
|
Output Rise Time (ns)
|
Noise FWHM keV (Si)
|
Sensitivity (mV/MeV) (Si)
|
No. Of Channels
|
|
|
A1422H |
15 Pin SIP hybrid |
- |
- |
1 / 10 / 47 |
±800 |
< ± 0.05% (0 ÷ ±10 V 1 kΩ term.) |
±10 (1 kΩ term.) ±4.5 (50 Ω term.) |
< 5/10/70 @0pF <20/25/45 @390pF |
< 2.2/4.7 @0pF <5.8/10.5 @390pF |
1/5/45/90/<br>400/450 |
1 |
|
|
A1422C/D |
Shielded box |
RJ-45 |
SHV |
1 / 10 |
± 2000 |
<± 0.05%<br>(0 ÷ ±10V 1 kΩ term.) |
±5 (1 kΩ term.)<br>±2.5 (100Ω term.) |
< 5 @0pF<br><15 @200pF |
< 4.7 @0pF<br>< 7.6 @200pF |
5 |
8 |
|
|
A1422 |
Shielded box |
LEMO or BNC |
SHV |
1/10/47 |
±2000 |
< ± 0.05% <br>(0 ÷ ±10V 1kΩ term.) |
±10 (1kΩ term.)<br>±4.5 (50Ω term.) |
<5/10/70 @0pF<br><10/20/25/45 @390pF |
<2.2/4.7 @0pF<br><5.5/5.8/10.5/36 @390pF |
1/5/45/90/<br>400/450 |
1/4/8 |
|
|
A1429 |
Shielded box |
Header (17+17) |
Samtec 80-pin 0.8mm |
0.5 / 1 / 2.2 |
±400 V Max |
N.A. |
Differential ± 4.5 VDiff max on 100Ω Term |
<20ns @0 pF<br><60ns @200 pF |
<5 KeV @0 pF<br><35 eV/pF |
20/45/90/<br>200/400 |
64 |
|
|
A1422E/F |
Shielded box |
SMA |
SMA |
1 |
±750 |
<±0.05%<br>(0 ÷ ±10V 1kΩ term.) |
±10 (1 kΩ term.)<br>±4.5 (50 Ω term.) |
<5.4 @0pF<br><60 @330pF |
<2.8 @0pF<br><6.8 @330pF |
200 |
2/4 |
|
|
A1442 |
Shielded box |
Header (17+17) |
D-SUB 25 |
N.A. |
±400 |
N.A. |
Differential ±4.5 Vdiff |
< 10 @0pF<br /><20 @200pF |
<5 @0pF<br><9.5 @200pF |
20 / 100 <br>Selectable |
16/32 |
|
|
Discontinued A422 |
14 pin SIP hybrid |
- |
- |
10 |
±1000 |
<0.05% |
± 8 ± 4 |
<20 |
<9.8 @470pF |
1/45/90 |
1 |
|
|
A422A |
Shielded box |
BNC |
SHV |
10 |
±5000 |
< 0.045% |
± 8 ± 4 |
< 50 |
<17.5 @1nF |
5/30/60 |
1 |
Technical Specifications
|
Packaging |
|
|
No. of Channels |
16 / 32 |
|
Detector Input |
|
|
VBIAS |
Up to 400 V (positive or negative)
|
|
Test |
Nr. 2 LEMO 00 female connector:
|
|
Differential Output |
|
|
Sum Out |
|
|
Energy ranges |
Sensitivity switch, factor 5:
|
|
Rise Time |
< 10 ns @ 0 pF detector capacitance |
|
Maximum Noise |
< 5 KeV on 0 pF input and < 23 eV/pF slope |
|
Power Connector |
Power supply voltage:
D-type 9 pin male connector |
|
Power Requirements |
|
|
Switches |
5+5 PIN HEADER 100 mils for Gain setting, Test inversion setting, Sum Output and Test termination. |
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