• Skip to main content
  • Skip to footer
CAEN logo light
  • About
    • Company Profile
    • Our policy
    • Sales network
    • Innovative Projects
    • Careers
    • How to reach us
  • Products
  • Resources
    • Documentation
    • Download
    • FAQ
    • Glossary
    • Certifications
    • General Conditions
  • Support
  • Contact
All productsForm FactorPower SupplyModular Pulse ProcessingDigitizer FamiliesDigital SpectroscopyCAEN SyS productsEducationalFirmware & SoftwarePowered CratesAccessoriesBrands

A1422H

Low-Noise Fast-Rise-Time Charge-Sensitive Preamplifiers

Datasheet

Home Modular Pulse Processing ElectronicsPreamplifiersPreamplifiers - Charge Sensitive A1422H

Photo of A1422H

  • Fast, low noise inverting preamplifier

  • Positive or negative input signals

  • 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

  • Up to 800 V (positive or negative) detector bias voltage

he A1422H series is a family of charge-sensitive preamplifiers in a single-in-line-package (SIP) format. 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)

Two versions of the A1422H have been produced (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 pin is also provided, accepting positive and negative signals for calibration.

CAEN also offers charge-sensitive preamplifiers based on A1422H modules (Mod. A1422) , available in 1 , 4, and 8-channel alloy boxes. These feature SHV connectors for the Input/Detector and HV bias signals, LEMO connectors for the test input and Output/Energy signals, and a cable terminated with a 9-pin D-sub male connector for the power supply.

The documentation of the Hybrid version of the A1422H is still available for the download.

Ordering Options

Code Description
WA1422H001F3

A1422H001F3 – Charge Preamplifier Module, 1mV/MeV gain, Cdet<1000pF

 RoHS
WA1422H005F2

A1422H005F2 – Charge Preamplifier Module, 5mV/MeV gain, Cdet<200pF

 RoHS
WA1422H005F3

A1422H005F3 – Charge Preamplifier Module, 5mV/MeV gain, Cdet<1000pF

 RoHS
WA1422H045F2

A1422H045F2 – Charge Preamplifier Module, 45mV/MeV gain, Cdet<200pF

 RoHS
WA1422H045F3

A1422H045F3 – Charge Preamplifier Module, 45mV/MeV gain, Cdet<1000pF

 RoHS
WA1422H090F2

A1422H090F2 – Charge Preamplifier Module, 90mV/MeV gain, Cdet<200pF

 RoHS
WA1422H090F3

A1422H090F3 – Charge Preamplifier Module, 90mV/MeV gain, Cdet<1000pF

 RoHS
WA1422H400F2

A1422H400F2 – Charge Preamplifier Module, 400mV/MeV gain, Cdet<200pF

 RoHS
WA1422H450F2

A1422H450F2 – Charge Preamplifier Module, 450mV/MeV gain, Cdet<200pF

 RoHS

You also may be interested in…

A1422

A1422

Low-Noise Fast-Rise-Time Charge-Sensitive Preamplifiers (Boxed)
Download Compare Tech. Spec.

Add to Wishlist
This product is already in your Wishlist
Browse the Wishlist

Request a Quote

Request a Quote

    Submit I’ve read and accept the privacy policy *

    Compare

    Close
    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

    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

    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

    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

    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

    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

    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

    A422
    Discontinued

    A422

    14 pin SIP hybrid

    -

    -

    10

    ±1000

    <0.05%

    ± 8 ± 4

    <20

    <9.8 @470pF

    1/45/90

    1

    A422A

    A422A

    Shielded box

    BNC

    SHV

    10

    ±5000

    < 0.045%

    ± 8 ± 4

    < 50

    <17.5 @1nF

    5/30/60

    1

    Image
    Name
    FORM FACTOR
    NO. OF CHANNELS
    DESCRIPTION
    SENSITIVITY
    COMPATIBLE DETECTORS
    A1422H

    A1422H

    Single in-line package

    1

    Low Noise Fast Rise Time Charge Sensitive Preamplifiers (SIP)

    1/5/45/90/400/450<br>mV/MeV (Si)

    Silicon (Si)

    A1424

    A1424

    Desktop

    1

    Fast Charge Sensitive Preamplifier

    3.6 mV/fC

    Diamond

    A1422C/D

    A1422C/D

    Desktop

    8

    Low Noise Fast Rise Time Charge Sensitive Preamplifier

    5 (mV/MeV) (Si)

    He3 / BF3 Tubes

    A1422

    A1422

    Desktop

    1 / 4 / 8

    Low Noise Fast Rise Time Charge Sensitive Preamplifiers

    1/5/45/90/400/450<br>mV/MeV (Si)

    He3 / BF3 Tubes<br>Proportional Counters<br>Ionization Chambers<br>Segmented Silicon <br>Silicon (Si)

    A1429

    A1429

    Desktop

    64

    Charge Sensitive Preamplifier

    20/45/90/200/400<br>mV/MeV (Si)

    GEM Segmented Silicon

    A1427

    A1427

    Desktop

    1

    Low Noise Fast Current Neutron Flux Preamplifier

    FC: 700÷2500<br>(Trimmer adjustable)<br>PR: 500÷1500<br>(Trimmer adjustable)

    Fission Chambers<br>Proton Recoil

    A1422E/F

    A1422E/F

    Desktop

    2 / 4

    Low Noise Fast Rise Time Charge Sensitive Preamplifiers

    200 mV/MeV (Si)

    Silicon (Si)

    A1442

    A1442

    Desktop

    16 / 32

    Charge Sensitive Preamplifier

    Selectable 20/100<br>mV/MeV (Si)

    GEM Segmented Silicon

    A1421
    New

    A1421

    Desktop

    1

    Preamplifier and Discriminator for 3He tubes

    30 mV/fC on HiZ<br>(15 mV/fC on 50 Ω)

    He3 / BF3 Tubes

    R1443

    R1443

    19” rack unit

    32 / 64

    Preamplifier Unit for 3He tubes

    2.25 V/pC

    He3 / BF3 Tubes

    A1423B

    A1423B

    Desktop

    1

    Wideband Preamplifier

    Selectable From<br>+18 dB to +54 dB

    Diamond PMT<br>Scintillators<br>SiPM / MPPC

    A1426 CARDARELLI

    A1426 CARDARELLI

    Desktop

    1

    Matched Charge Preamplifier

    Up to 5 mV/fC

    Diamond

    A1436 / A1436A

    A1436 / A1436A

    Desktop

    1 / 8

    Differential Input Low Noise Transimpedance Amplifiers

    Programmable<br>10<sup>9</sup>/10<sup>8</sup>/10<sup>7</sup>/10<sup>6</sup>/10<sup>5</sup>/10<sup>4</sup>/10<sup>3</sup><br>(V/A), 10<sup>9</sup> V/A (A1436 only)

    Diamond PMT / Scintillators<br>Silicon (Si)

    A1425

    A1425

    Desktop

    1

    Fast Charge Sensitive Preamplifier

    3.6 mV/fC

    Diamond

    A422A

    A422A

    Desktop

    1

    Charge Sensitive Preamplifier with Timing

    5/30/60 mV/MeV (Si)

    Proportional Counters<br>Ionization Chambers<br>Silicon (Si)

    Technical Specifications

    Close

    Packaging

    • Single in-line package hybrid (38 mm x 23 mm x 3 mm)

    • Pin pitch: 2.54 mm

    • Weight: 2.63 g

    No. Of Channels

    1

    Detector In

    Accepts positive and negative charge pulses from semiconductor detectors and supplies the HV bias to the detector itself.

    HV Input

    Up to 800 V (positive or negative) – 10 MΩ resistance in series

    Test Input

    Positive or negative input for energy calibration through a Ctest capacitor:

    • 1 pF (standard)

    • 10 pF on 5 mV/MeV version

    • 47 pF on 1 mV/MeV version.

    Output

    ± 10V max. (open circuit), 50 Ω back termination.

    Rise Time (test input rise time: 1.6 ns; amplitude: 200 mV; 50Ω Termination)

    Model

    0 pF

    200 pF

    Model

    390 pF

    1000 pF

    F2 – 5 mV/MeV

    < 5 ns

    < 15 ns

    F3 – 1 mV/MeV

    < 10 ns

    < 20 ns

    F2 – 45 mV/MeV

    < 5 ns

    < 15 ns

    F3 – 5 mV/MeV

    < 20 ns

    < 40 ns

    F2 – 90 mV/MeV

    < 10 ns

    < 25 ns

    F3 – 45 mV/MeV

    < 25 ns

    < 50 ns

    F2 – 400 mV/MeV

    < 70 ns

    < 110 ns

    F3 – 90 mV/MeV

    < 45 ns

    < 100 ns

    F2 – 450 mV/MeV

    < 70 ns

    < 110 ns

    Maximum Noise ((Measured with a CAEN N968 Spectroscopy Amplifier and an N957 Peak-Sensing ADC; shaping time: 3 μs.)

    Model

    0 pF

    200 pF

    Model

    390 pF

    1000 pF

    F2 – 5 mV/MeV

    < 4.7 keV

    < 7.6 keV

    F3 – 1 mV/MeV

    < 36.0 keV

    < 46.6 keV

    F2 – 45 mV/MeV

    < 2.2 keV

    < 4.3 keV

    F3 – 5 mV/MeV

    < 10.5 keV

    < 21.5 keV

    F2 – 90 mV/MeV

    < 2.2 keV

    < 4.2 keV

    F3 – 45 mV/MeV

    < 5.8 keV

    < 13.2 ns

    F2 – 400 mV/MeV

    < 2.2 keV

    < 4.1 keV

    F3 – 90 mV/MeV

    < 5.5 keV

    < 13.2 ns

    F2 – 450 mV/MeV

    < 2.2 keV

    < 4.1 keV

    Integral non linearity

    <± 0.05% (0 ÷ ±10 V 1 kΩ termination)

    Gain drift

    < ±100 ppm/°C (0 to 50°C)

    Energy sensitivity (Si equivalent)

    1/5/45/90/400/450 mV/MeV

    Power requirements

    • +12 V: F2:12 mA – F3: 20 mA

    • -12 V: F2: 4 mA – F3: 4 mA

    Footer

    CAEN S.p.A.

    PI 00864500467 | REA: LU 102690

    C.I.V.: 500.500€ | CDU A47Ø7H7

    IMQ Certification
    Cyber Essentials Plus

    About Us

    • Company Profile
    • Our policy
    • Sales network
    • Innovative Projects
    • Careers
    • How to reach us

    Resources

    • Documentation
    • Accessibility Statement

    Applications

    • High Energy Physics
    • Astrophysics
    • Neutrino Physics
    • Dark Matter Investigation
    • Nuclear Physics
    • Material Science
    • Medical Applications
    • Homeland Security

    Support

    • Getting Started with MyCAEN Portal
    • CAEN LHC Commitment

    News

    • News

    Contact Us

    • Contact

    Login
    • Privacy Policy
    • Cookie Policy

    Copyright © 2026 CAEN S.p.A. All rights reserved. Website by Addiction

    ✕