Preamplifiers – Charge Sensitive

Preamplifiers - Charge Sensitive

Photo of Preamplifiers – Charge Sensitive

The Preamplifiers – Charge Sensitive family includes a wide range of low-noise front-end solutions designed to convert detector charge into proportional voltage signals for accurate energy and timing measurements. These preamplifiers are optimized for semiconductor, silicon strip, gas, and position-sensitive detectors, supporting both single-channel and high-density multi-channel configurations.

Featuring selectable sensitivities, fast response, and excellent noise performance, they ensure reliable operation across a broad range of detector capacitances and counting rates. Integrated bias distribution, test inputs for calibration, and differential outputs for long-distance transmission enable flexible integration in both laboratory setups and large-scale experiments. Compact form factors and low power consumption also allow direct detector coupling, including operation in vacuum or radiation-intensive environments.

  • Low-noise charge-sensitive architecture for semiconductor and position-sensitive detectors

  • Wide range of sensitivities and detector capacitance support, from single-channel to high-density arrays

  • Integrated detector bias, calibration inputs, and differential outputs for robust system integration

  • Fast response and high-rate capability suitable for nuclear, subnuclear, and beamline applications

Preamplifiers – Charge Sensitive Models

Grid Compare
A1422H

A1422H

  • Fast, low noise inverting preamplifier

  • Positive or negative input signals

  • Six available sensitivities (Si equivalent):

    • 1 mV/MeV
A1422C/D

A1422C/D

  • Fast, low noise inverting preamplifier

  • Gain 5 mV/MeV(Si)

  • Positive or negative input signals
A1422

A1422

  • Fast, low noise inverting preamplifier

  • Six available sensitivities (Si equivalent):

    • 1 mV/MeV

    • 5 mV/MeV
A1429

A1429

  • 64-channel

  • Max. output voltage: +/- 4,5V Diff on 100 Ω termination

  • Sensitivities: 20, 45, 90, 200, 400mV / MeV
A1422E/F

A1422E/F

  • Fast, low noise inverting preamplifier

  • Gain 200 mV/MeV (Si equivalent)

  • Positive or negative input signals
A1442

A1442

  • 16 channel or 32 channel Version available

  • x1 or x5 sensitivity switchable via font panel jumper

  • Maximum output voltage +/- 4,5 VDiff:

    • 200 MeV (Si) @ 1X
A422
Discontinued

A422

  • Fast, low noise inverting preamplifier

  • Positive or negative input signals

  • Energy sensitivity range selectable between 1, 45 or 90 mV/MeV (Si)
A422A

A422A

  • Positive or negative input signals

  • Energy sensitivity range of 5, 30 or 60 mV/MeV (Si)

  • Low noise
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/
400/450

1
A1422C/D

A1422C/D

Shielded box

RJ-45

SHV

1 / 10

± 2000

<± 0.05%
(0 ÷ ±10V 1 kΩ term.)

±5 (1 kΩ term.)
±2.5 (100Ω term.)

< 5 @0pF
<15 @200pF

< 4.7 @0pF
< 7.6 @200pF

5

8
A1422

A1422

Shielded box

LEMO or BNC

SHV

1/10/47

±2000

< ± 0.05%
(0 ÷ ±10V 1kΩ term.)

±10 (1kΩ term.)
±4.5 (50Ω term.)

<5/10/70 @0pF
<10/20/25/45 @390pF

<2.2/4.7 @0pF
<5.5/5.8/10.5/36 @390pF

1/5/45/90/
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
<60ns @200 pF

<5 KeV @0 pF
<35 eV/pF

20/45/90/
200/400

64
A1422E/F

A1422E/F

Shielded box

SMA

SMA

1

±750

<±0.05%
(0 ÷ ±10V 1kΩ term.)

±10 (1 kΩ term.)
±4.5 (50 Ω term.)

<5.4 @0pF
<60 @330pF

<2.8 @0pF
<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
<20 @200pF

<5 @0pF
<9.5 @200pF

20 / 100
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