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Fast, low noise inverting preamplifier
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Gain 200 mV/MeV (Si equivalent)
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Positive or negative input signals
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2 or 4 input channels
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Up to 700V (positive or negative) detector bias voltage
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Low noise input stage composed JFETs diode protected
The A1422E/F series are charge sensitive preamplifiers packaged in a 2/4 channels box. The sensitivity is 200 mV/MeV.
It is suited for silicon detectors with wide surface and high capacitance, used for nuclear and subnuclear physics experiments, where very low noise, fast response and high counting rates are required. The modules accept both positive and negative input charge pulses and provide an energy output of ±4.5 V range on 50 Ω termination (±10 V on 1 kΩ). Moreover, a test input accepts positive and negative signals for calibration purposes.
The A1422E/F is implemented into alloy boxes and feature SHV connectors for HV/IN, SMA connectors for DET/IN, TEST IN and E OUT and D-type 9 pin male connector for the power supply.
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TEST connector A1422E: Amphenol RF 901-9889-RFX A1422F: Würth Elektronik 60312242114510 |
SMA connector (IN) A1422E: Amphenol RF 901-9889-RFX A1422F: Adam Tech RF2-49B-T-00-50-G-HDW |
SMA connector (OUT) A1422E: Amphenol RF 901-9889-RFX A1422F: Würth Elektronik 60312242114510 |
Consult our connectors reference page for technical information.
A customization is available to improve amplifier protection from transients at detector input connection.
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Compare
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Image
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Name
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Package
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Out Conn.
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In Conn.
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Test Capac. (pF)
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Max Detector Bias Voltage (V)
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Integral Non-linearity
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Output Linear Range (V)
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Output Rise Time (ns)
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Noise FWHM keV (Si)
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Sensitivity (mV/MeV) (Si)
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No. Of Channels
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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Discontinued A422 |
14 pin SIP hybrid |
- |
- |
10 |
±1000 |
<0.05% |
± 8 ± 4 |
<20 |
<9.8 @470pF |
1/45/90 |
1 |
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A422A |
Shielded box |
BNC |
SHV |
10 |
±5000 |
< 0.045% |
± 8 ± 4 |
< 50 |
<17.5 @1nF |
5/30/60 |
1 |
Technical Specifications
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No. Of Channels |
A1422E: 2-channelsA1422F: 4-channels |
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Packaging |
Alloy Box;Dimension WxHxD: 100 x 50 x 124 mm3 (connector excluded) |
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HV Input |
Up to 700 V (positive or negative) ; SHV connector |
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Detector Input |
Accepts positive and negative input charge pulses from semiconductor detectors and supplies the HV bias to the detector itself; SMA connectorA1422E: Amphenol RF 901-9889-RFXA1422F: Adam Tech RF2-49B-T-00-50-G-HDW |
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Test Input |
Positive or negative input for the energy calibration via Ctest= 1 pF; SMA connectorA1422E: Amphenol RF 901-9889-RFXA1422F: Würth Elektronik 60312242114510 |
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Output |
±10 V 1 kΩ termination, ±4.5 V 50 Ω termination; SMA connectorA1422E: Amphenol RF 901-9889-RFXA1422F: Würth Elektronik 60312242114510 |
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Rise Time (test input rise time = 1.6 ns) |
0 pF< 5.4 ns 330 pF< 60 ns |
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Noise FWHM keV (Si) |
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Integral non linearity |
<± 0.05% (0 ÷ ± 10 V 1 kΩ termination) |
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Energy Sensitivity |
200 mV/MeV (Si) |
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Power Requirements |
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