A1423B
Wideband Preamplifier
Features
- Bandwidth: ~ 1.5 GHz (-3 dB)
- Positive or negative input signals
- Gain range: from +18 dB to +54 dB
- Output voltage: ± 1V
- Input and output impedance 50 Ω, SWR<1.5:1
- Noise Figure: 7 dB @ 1 GHz
- Up to 750 V (positive or negative) detector bias voltage
Overview
The CAEN Mod. A1423B is an inverting Wideband Amplifier designed for fast detectors, as SiPMs and Diamonds, having a bandwidth of ~ 1.5 GHz (-3dB). The gain ranges from +18 dB to +54 dB and it is locally controlled through a rotary switch. The amplifier accepts both positive and negative input pulses and can provide an energy output in the ± 1V range across a 50 Ω load. The amplifier is AC decoupled with an input and output impedance of 50 Ω (SWR < 1.5:1) and can carry a bias voltage for the detector up to ± 750 V. The A1423B is implemented in a shielded box and features SMA connectors for the HV BIAS, IN/DETECTOR and OUTPUT.
Technical Specifications
- Packaging
Shielded Box
Dimensions (WxHxD connector excluded):
55 x 25 x 95 mm3 (without connectors)
Weight: 134 g
- Gain range
From +18 dB to +54 dB
Step: 2 dB for 18-36 dB range, 3 dB for 36-54 dB range
Selectable via 16 position Rotary Switch
- Polarity
Positive or negative input signals
- Bandwidth
~ 1.5 GHz (-3dB)
- Noise Figure
7 dB @ 1 GHz
- INPUT IN(*)
Detector input (AC decoupled)
Input impedance: 50 Ω (SWR < 1.5:1),
SMA 142-0711-811 Johnson connector.(*)Safety and Operation requirements: The input circuit includes a protection network to prevent damage to the input circuit from transient generated in the IN/HV network (up to ± 500 V). Anyway care must be taken in the use of A1423B
with high voltage detectors.
- INPUT (HV)
HV BIAS input / Detector bias voltage
Range: ±750V
SMA 142-0711-811 Johnson connector.
- OUTPUT (OUT)
Amplifier Out (AC decoupled)
Dynamics: ±1 V (2V absolute)
Output impedance: 50 Ω (SWR < 1.5:1)
SMA 142-0711-811 Johnson connector
- Power Requirements
- External power supply (included);
- Consumption: +12 V 250 mA (typical)
The module is powered by an external AC-DC stabilized power supply provided with the amplifier and included in the delivered kit.
Note: Using a different power supply source, like battery or linear type, it is recommended to provide +12V and, at least, 500 mA. The power jack is a 2.1mm type, a suitable cable is the RS 656-3816 type (or similar).
Ordering Options
| Code | Description |
|---|---|
| WA1423XBAAAA | A1423B - Wide Band Preamplifier RoHS |