Preamplifiers – Detectors

Preamplifiers - Detectors

Home Modular Pulse Processing ElectronicsPreamplifiers Preamplifiers – Detectors

The Preamplifiers – Detectors family provides a comprehensive set of front-end solutions for reading out a wide range of radiation and particle detectors, including silicon and diamond sensors, photodiodes, scintillators, neutron tubes, and large segmented arrays. These modules convert detector charge or current signals into low-noise voltage outputs while preserving timing and energy information, ensuring optimal coupling with shaping amplifiers, discriminators, and digitizers.

The family spans single-channel to high-density multi-channel systems, with architectures optimized for applications such as spectroscopy, fast timing, position-sensitive neutron detection, and large-area detector arrays. Solutions include charge-sensitive, transimpedance, and wideband preamplifiers with configurable gain, bandwidth, and biasing options. Many units integrate programmable parameters, differential signaling for noise immunity, and support for remote control and long-distance detector cabling. Designed for demanding environments—including high radiation, vacuum systems, and high counting rates. These preamplifiers deliver stable operation, low equivalent noise, and flexible integration into modern DAQ chains.

Charge-sensitive, transimpedance, and wideband preamplifiers for diverse detector types
Configurable gain, shaping, and biasing with low-noise, high-rate performance
Multi-channel and high-density solutions for segmented and position-sensitive detectors
Designed for harsh environments with long-cable operation and robust detector coupling

Preamplifiers – Detectors Models

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A1422H

Fast, low noise inverting preamplifier
Positive or negative input signals
Six available sensitivities (Si equivalent):
- 1 mV/MeV

A1424

Fast, low noise inverting preamplifier specifically designed for Scintillation Detectors
Variable sensitivity from 0.8 to 10 mV/pC
Fast output for timing measurements

A1422C/D

Fast, low noise inverting preamplifier
Gain 5 mV/MeV(Si)
Positive or negative input signals

A1422

Fast, low noise inverting preamplifier
Six available sensitivities (Si equivalent):
- 1 mV/MeV
- 5 mV/MeV

A1429

64-channel
Max. output voltage: +/- 4,5V Diff on 100 Ω termination
Sensitivities: 20, 45, 90, 200, 400mV / MeV

A1427

Fast non inverting preamplifier, negative output (EOUT)
Input impedance: 50 Ω AC coupled
Output high impedance (EOUT)

A1422E/F

Fast, low noise inverting preamplifier
Gain 200 mV/MeV ^{(Si equivalent)}
Positive or negative input signals

A1442

16 channel or 32 channel Version available
x1 or x5 sensitivity switchable via font panel jumper
Maximum output voltage +/- 4,5 V_Diff:
- 200 MeV (Si) @ 1X

New

A1421

Specifically designed for neutron detectors as 3He or BF3 tubes in counting applications
Gain: 30 mV/fc on HiZ (15 mV/fC on 50 Ω)
Discriminator with adjustable threshold

R1443

Specifically designed for neutron detectors as He³ in position sensitive application
19” rack unit (height = 2U)
External HV input on SHV connector (feeding the internal decoupling circuits)

A1423B

Bandwidth: ~ 1.5 GHz (-3 dB)
Positive or negative input signals
Gain range: from +18 dB to +54 dB

A1426 CARDARELLI

Fast, non-inverting preamplifier, positive output
Up to 5 mV/fC sensitivity
ENC of 0.3 fC (2000 e)

A1436 / A1436A

1/8 independent channels
6/7 Transimpedance range (*): 109, 108, 107, 106, 105, 104, 103 V/A
3nV Eq. Input Noise

A1425

Fast, inverting preamplifier
Sensitivity of 3.6 mV/fC
ENC of 0.16 fC (1000 e)

A422A

Positive or negative input signals
Energy sensitivity range of 5, 30 or 60 mV/MeV (Si)
Low noise

Image	Name	FORM FACTOR	NO. OF CHANNELS	DESCRIPTION	SENSITIVITY	COMPATIBLE DETECTORS
	A1422H	Single in-line package	1	Low Noise Fast Rise Time Charge Sensitive Preamplifiers (SIP)	1/5/45/90/400/450 mV/MeV (Si)	Silicon (Si)
	A1424	Desktop	1	Fast Charge Sensitive Preamplifier	3.6 mV/fC	Diamond
	A1422C/D	Desktop	8	Low Noise Fast Rise Time Charge Sensitive Preamplifier	5 (mV/MeV) (Si)	He3 / BF3 Tubes
	A1422	Desktop	1 / 4 / 8	Low Noise Fast Rise Time Charge Sensitive Preamplifiers	1/5/45/90/400/450 mV/MeV (Si)	He3 / BF3 Tubes Proportional Counters Ionization Chambers Segmented Silicon Silicon (Si)
	A1429	Desktop	64	Charge Sensitive Preamplifier	20/45/90/200/400 mV/MeV (Si)	GEM Segmented Silicon
	A1427	Desktop	1	Low Noise Fast Current Neutron Flux Preamplifier	FC: 700÷2500 (Trimmer adjustable) PR: 500÷1500 (Trimmer adjustable)	Fission Chambers Proton Recoil
	A1422E/F	Desktop	2 / 4	Low Noise Fast Rise Time Charge Sensitive Preamplifiers	200 mV/MeV (Si)	Silicon (Si)
	A1442	Desktop	16 / 32	Charge Sensitive Preamplifier	Selectable 20/100 mV/MeV (Si)	GEM Segmented Silicon
	New A1421	Desktop	1	Preamplifier and Discriminator for 3He tubes	30 mV/fC on HiZ (15 mV/fC on 50 Ω)	He3 / BF3 Tubes
	R1443	19” rack unit	32 / 64	Preamplifier Unit for 3He tubes	2.25 V/pC	He3 / BF3 Tubes
	A1423B	Desktop	1	Wideband Preamplifier	Selectable From +18 dB to +54 dB	Diamond PMT Scintillators SiPM / MPPC
	A1426 CARDARELLI	Desktop	1	Matched Charge Preamplifier	Up to 5 mV/fC	Diamond
	A1436 / A1436A	Desktop	1 / 8	Differential Input Low Noise Transimpedance Amplifiers	Programmable 10⁹/10⁸/10⁷/10⁶/10⁵/10⁴/10³ (V/A), 10⁹ V/A (A1436 only)	Diamond PMT / Scintillators Silicon (Si)
	A1425	Desktop	1	Fast Charge Sensitive Preamplifier	3.6 mV/fC	Diamond
	A422A	Desktop	1	Charge Sensitive Preamplifier with Timing	5/30/60 mV/MeV (Si)	Proportional Counters Ionization Chambers Silicon (Si)