3 Years Warranty
3 Years Warranty
3 Years Warranty
3 Years Warranty
3 Years Warranty
3 Years Warranty
A1422
Low-Noise Fast-Rise-Time Charge-Sensitive Preamplifiers (Boxed)
Features
- Fast, low noise inverting preamplifier
- Six available sensitivities (Si equivalent):
- 1 mV/MeV
- 5 mV/MeV
- 45 mV/MeV
- 90 mV/MeV
- 400 mV/MeV
- 450 mV/MeV
- Up to 1000 pF detector capacitance supported
- 1, 4 and 8 channel model available
- Up to 2 kV (positive or negative) detector bias voltage
Overview
The CAEN Mod. A1422 series is a family of charge-sensitive preamplifiers packaged in 1-, 4-, and 8-channel alloy boxes. Various sensitivity values are available, and a wide range of detector capacitances is supported:
- F2 type: up to 200 pF; sensitivities: 5, 45, 90, 400, 450 mV/MeV (Si)
- F3 type: up to 1000 pF; sensitivities: 1, 5, 45, 90 mV/MeV (Si)
The same preamplifiers are also available as 15-pin single-in-line-package modules (see Mod. A1422H).
Two versions of the A1422 have been produced, based on the corresponding versions of the A1422H module inside (the full specifications of both are reported in the Tech. Spec. section):
- Hybrid version — obsolete (no longer in production)
- PCB version — current production
All models can be used in nuclear and sub-nuclear 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 with a ±4.5 V range into a 50 Ω termination (±10 V into 1 kΩ). A test input is also provided, accepting positive and negative signals for calibration.
The A1422 modules are housed in alloy boxes and feature SHV connectors for the DET/IN and HV/IN signals, LEMO connectors for the TEST IN and EOUT signals, and a cable terminated with a 9-pin D-sub male connector for the power supply.
A customization is available to improve amplifier protection from transients at the detector input connection.
A1422 models can be powered using the following devices:
- Amplifier N968 (via a D-type female connector on the rear panel)
- DT5423 – Quad Linear Desktop Power Distributor for Preamplifiers and Digitizer
- N5424 – Quad NIM Power Distributor for Preamplifiers
- V5425 – Quad VME Power Distributor for Preamplifiers
Here you can find the link at the “MIRACLES detector prototypes and front-end electronics: integration, tests and some lessons learned” presented in DENIM (Design and Engineering of Neutron Instruments Meeting) on September 2023 at Forschungszentrum Jülich in Germany.
Technical Specifications
- No. Of Channels
1 / 4 / 8
- Packaging
Alloy Box; Dimensions (WxHxD connector included):
- A1422Axxxx (1 ch): 40.0 x 30.0 x 124 mm3
- A1422Bxxxx (4 ch): 100.0 x 50.0 x 162 mm3
- A1422Cxxxx (8 ch): 100.0 x 50.0 x 162 mm3
- Detector In
Accepts positive and negative input charge pulses from semiconductor detectors and supplies the HV bias to the detector itself;
SHV connector
- HV Input
Up to 2 kV (positive or negative); 100 MΩ resistance in series;
SHV connector (BNC on request)
- Test Input
Positive or negative input for energy calibration through a Ctest capacitor (LEMO-00 connector):
- 1 pF (standard)
- 10 pF on 5 mV/MeV version
- 47 pF on 1 mV/MeV version.
- Output
Hybrid: ± 8V max. (open circuit), 50 Ω back termination.
PCB: ± 10V max. (open circuit), 50 Ω back termination.
- Rise Time - Hybrid version
(test input rise time: 1.6 ns; amplitude: 200 mV; 50Ω Termination) - Model
F2 – 5 mV/MeV
F2 – 45 mV/MeV
F2 – 90 mV/MeV
F2 – 400 mV/MeV0 pF
< 10 ns
< 10 ns
< 10 ns
< 35 ns200 pF
< 20 ns
< 35 ns
< 75 ns
< 110 nsModel
F3 – 5 mV/MeV
F3 – 45 mV/MeV
F3 – 90 mV/MeV390 pF
< 20 ns
< 45 ns
< 100 ns1000 pF
< 35 ns
< 90 ns
< 220 ns
- Rise Time - PCB version
(test input rise time: 1.6 ns; amplitude: 200 mV; 50Ω Termination) - Model
F2 – 5 mV/MeV
F2 – 45 mV/MeV
F2 – 90 mV/MeV
F2 – 400 mV/MeV
F2 – 450 mV/MeV0 pF
< 5 ns
< 5 ns
< 10 ns
< 70 ns
< 70 ns200 pF
< 15 ns
< 15 ns
< 25 ns
< 110 ns
< 110 nsModel
F3 – 1 mV/MeV
F3 – 5 mV/MeV
F3 – 45 mV/MeV
F3 – 90 mV/MeV390 pF
< 10 ns
< 20 ns
< 25 ns
< 45 ns1000 pF
< 20 ns
< 40 ns
< 50 ns
< 100 ns
- Maximum Noise - Hybrid version
(Measured with a CAEN N968 Spectroscopy Amplifier and an N957 Peak-Sensing ADC; shaping time: 3 μs.) - Model
F2 – 5 mV/MeV
F2 – 45 mV/MeV
F2 – 90 mV/MeV
F2 – 400 mV/MeV0 pF
< 6.6 keV
< 1.9 keV
< 1.8 keV
< 2.0 keV200 pF
< 9.7 keV
< 4.3 keV
< 4.3 keV
< 3.6 keVModel
F3 – 5 mV/MeV
F3 – 45 mV/MeV
F3 – 90 mV/MeV390 pF
< 10.6 keV
< 6.5 keV
< 5.9 keV1000 pF
< 15.2 keV
< 11.5 keV
< 11.3 keV
- Maximum Noise - PCB version
(Measured with a CAEN N968 Spectroscopy Amplifier and an N957 Peak-Sensing ADC; shaping time: 3 μs.) - Model
F2 – 5 mV/MeV
F2 – 45 mV/MeV
F2 – 90 mV/MeV
F2 – 400 mV/MeV
F2 – 450 mV/MeV0 pF
< 4.7 keV
< 2.2 keV
< 2.2 keV
< 2.2 keV
< 2.2 keV200 pF
< 7.6 keV
< 4.3 keV
< 4.2 keV
< 4.1 keV
< 4.1 keVModel
F3 – 1 mV/MeV
F3 – 5 mV/MeV
F3 – 45 mV/MeV
F3 – 90 mV/MeV390 pF
< 36.0 keV
< 10.5 keV
< 5.8 keV
< 5.5 keV1000 pF
< 46.6 keV
< 21.5 keV
< 13.2 keV
< 13.2 keV
- Integral non linearity
Hybrid: <± 0.05% (0 ÷ ±8 V 1 kΩ termination)
PCB: <± 0.05% (0 ÷ ±10 V 1 kΩ termination)
- Energy sensitivity
1/5/45/90/400/450 mV/MeV
- Power requirements - Hybrid version
- Model
A1422AxxxF2 (1 ch):
A1422BxxxF2 (4 ch):
A1422CxxxF2 (8 ch):+12 V
14 mA
55 mA
105 mA-12 V
6 mA
25 mA
50 mAModel
A1422AxxxF3 (1 ch):
A1422BxxxF3 (4 ch):
A1422CxxxF3 (8 ch):+12 V
24 mA
80 mA
160 mA-12 V
6 mA
25 mA
50 mA
- Power requirements - PCB version
- Model
A1422AxxxF2 (1 ch):
A1422BxxxF2 (4 ch):
A1422CxxxF2 (8 ch):+12 V
12 mA
48 mA
96 mA-12 V
4 mA
16 mA
32 mAModel
A1422AxxxF3 (1 ch):
A1422BxxxF3 (4 ch):
A1422CxxxF3 (8 ch):+12 V
20 mA
80 mA
160 mA-12 V
4 mA
16 mA
32 mA
Compare
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Ordering Options
| Code | Description |
|---|---|
| WA1422A005F2 | A1422A005F2 - 1 Ch. Charge Preamplifier, 5mV/MeVgain, Cdet<200pF RoHS |
| WA1422A005F3 | A1422A005F3 - 1 Ch. Charge Preamplifier, 5mV/MeVgain, Cdet<1000pF RoHS |
| WA1422A045F2 | A1422A045F2 - 1 Ch. Charge Preamplifier, 45mV/MeVgain, Cdet<200pF RoHS |
| WA1422A045F3 | A1422A045F3 - 1 Ch. Charge Preamplifier, 45mV/MeVgain, Cdet<1000pF RoHS |
| WA1422A090F2 | A1422A090F2 - 1 Ch. Charge Preamplifier, 90mV/MeVgain, Cdet<200pF RoHS |
| WA1422A090F3 | A1422A090F3 - 1 Ch. Charge Preamplifier, 90mV/MeVgain, Cdet<1000pF RoHS |
| WA1422A400F2 | A1422A400F2 - 1 Ch. Charge Preamplifier, 400mV/MeVgain, cdet<200pF RoHS |
| WA1422B005F2 | A1422B005F2 - 4 Ch. Charge Preamplifier, 5mV/MeVgain, Cdet<200pF RoHS |
| WA1422B005F3 | A1422B005F3 - 4 Ch. Charge Preamplifier, 5mV/MeVgain, Cdet<1000pF RoHS |
| WA1422B045F2 | A1422B045F2 - 4 Ch. Charge Preamplifier, 45mV/MeVgain, Cdet<200pF RoHS |
| WA1422B045F3 | A1422B045F3 - 4 Ch. Charge Preamplifier, 45mV/MeVgain, Cdet<1000pF RoHS |
| WA1422B090F2 | A1422B090F2 - 4 Ch. Charge Preamplifier, 90mV/MeVgain, Cdet<200pF RoHS |
| WA1422B090F3 | A1422B090F3 - 4 Ch. Charge Preamplifier, 90mV/MeVgain, Cdet<1000pF RoHS |
| WA1422B400F2 | A1422B400F2 - 4 Ch. Charge Preamplifier, 400mV/MeVgain, Cdet<200pF RoHS |
| WA1422C005F2 | A1422C005F2 - 8 Ch. Charge Preamplifier, 5mV/MeVgain, Cdet<200pF RoHS |
| WA1422C005F3 | A1422C005F3 - 8 Ch. Charge Preamplifier, 5mV/MeVgain, Cdet<1000pF RoHS |
| WA1422C045F2 | A1422C045F2 - 8 Ch. Charge Preamplifier, 45mV/MeVgain, Cdet<200pF RoHS |
| WA1422C045F3 | A1422C045F3 - 8 Ch. Charge Preamplifier, 45mV/MeVgain, Cdet<1000pF RoHS |
| WA1422C090F2 | A1422C090F2 - 8 Ch. Charge Preamplifier, 90mV/MeVgain, Cdet<200pF RoHS |
| WA1422C090F3 | A1422C090F3 - 8 Ch. Charge Preamplifier, 90mV/MeVgain, Cdet<1000pF RoHS |
| WA1422C400F2 | A1422C400F2 - 8 Ch. Charge Preamplifier, 400mV/MeVgain, Cdet<200pF RoHS |
| WPERS0142201 | A1422A 1 Ch Preamplifier Personalization for Improved Input ESD Protection RoHS |
| WPERS0142204 | A1422B 4 Ch Preamplifier Personalization for Improved Input ESD Protection RoHS |
| WPERS0142208 | A1422C 8 Ch Preamplifier Personalization for Improved Input ESD Protection RoHS |
| WA1422A001F3 | A1422A001F3 - 1 Ch. Charge Preamplifier, 1mV/MeVgain, Cdet<1000pF RoHS |
| WA1422B001F3 | A1422B001F3 - 4 Ch. Charge Preamplifier, 1mV/MeVgain, Cdet<1000pF RoHS |
| WA1422C001F3 | A1422C001F3 - 8 Ch. Charge Preamplifier, 1mV/MeVgain, Cdet<1000pF RoHS |
| WA1422A450F2 | A1422A450F2 - 1 Ch. Charge Preamplifier, 450mV/MeVgain, cdet<200pF RoHS |
| WA1422B450F2 | A1422B450F2 - 4 Ch. Charge Preamplifier, 450mV/MeVgain, cdet<200pF RoHS |
| WA1422C450F2 | A1422C450F2 - 8 Ch. Charge Preamplifier, 450mV/MeVgain, cdet<200pF RoHS |