- High speed voltage amplifiers with bandwidth up to 2.5 GHz
- Gain up to 60 dB (50,000 V/A)
- Input Noise 330 pV/√Hz (6.6 pA/√Hz)
- Integrated DC Path for Easy Operation with Fast Photodiodes
- Two Identical Signal Outputs (HSA-Y)
- DC-Monitor Output (HSA-Y)
High speed voltage amplifiers offer ultra low-noise amplification with high gain at GHz speed
The HSA series high speed voltage amplifiers offer a well-balanced combination of high gain, wide bandwidth up to 2 GHz and low noise making them ideal for time-resolved measurements with ultra fast photodetectors. The compact housing design with threaded M4 and 8-32 holes allows easy integration in all optical bench systems.
Integrated DC Path
In many applications – e.g. shot-noise-limited spectroscopy, heterodyne measurements etc. – the detector is subject to relatively high cw-power. As a result of this, a high level DC current is generated in the detector. This DC-current must have an electrical path to flow off to ground. The optimum solution in this case is a so-called Bias-T which allows high cw-power and guarantees an optimum signal-to-noise-ratio with very good 50 Ω matching. We have already integrated the Bias-T in our HSA High-Speed Amplifier Series. For detailed information please see our application note: DC-Path (BIAS-T) for fast Photodetectors.
HSA-X
The HSA-X comes in a very compact package with integrated Bias-T, SMA signal input and output connectors and a selection of fixed gain from 20 to 40 dB.
HSA-Y
In addition to the features the HSA-X the HSA-Y high speed voltage amplifiers are equipped with a DC-monitor for alignment and detector control or the measurement of low frequency background signal. Furthermore, the HSA-Y features two identical signal outputs that enable triggering or signal control without the need for an external signal splitter. The gain of the HSA-Y can be selected as 20, 40 or 60 dB.
Applications
- Preamplifier for Ultra-Fast Detectors (Microchannel-Plates, Photomultipliers, Avalanche-Photodiodes and PIN-Photodiodes)
- Oscilloscope and Transient Recorder Preamplifier
- Time-Resolved Pulse and Transient Measurements
- Signal Booster in 50 Ω High Speed Systems
High Speed Voltage Amplifiers Selector:
| Model | HSA-X-2-20 | HSA-X-I-2-40 (Old Model HSA-X-2-40) | HSA-X-1-40 |
| Lower Cut-Off Frequency | 10 kHz | 10 kHz | 10 kHz |
| Upper Cut-Off Frequency [kHz] | 2.5 GHz | 2.2 GHz | 1.2 GHz |
| Rise/Fall Time (10-90%) | 140 ps | 160 ps | 290 ps |
| Gain/Transimpedance | 20 dB / 500 V/A | 40 dB / 5,000 V/A (inverting) | 40 dB / 5,000 V/A |
| Input Noise [/√Hz] | 620 pV (12.4 pA) | 430pV (8.6 pA) | 310 pV (6.2 pA) |
| Input VWSR | 1.23:1 | 1.25:1 | 1.6:1 |
| Output Voltage | 2.0 Vp-p | 2.0 Vp-p | 2.0 Vp-p |
| Input/Output | 50 Ω, SMA | 50 Ω, SMA | 50 Ω, SMA |
| Power Supply | + 15V, + 85mA | + 15V, + 125mA | + 15V, + 120mA |
| Case | 90 x 45 x 25 mm (L x W x H), Weight 100 gr. (0.23 lbs) | ||
| Integrated DC Path. 8-32 and M4 mounting threads. Power supply via 3-pin LEMO socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet. | |||
| Model | HSA-Y-2-20 | HSA-Y-2-40 | HSA-Y-1-40 | HSA-Y-1-60 |
| Lower Cut-Off Frequency | 10 kHz | 10 kHz | 10 kHz | 10 kHz |
| Upper Cut-Off Frequency | 2 GHz | 1.9 GHz | 1.0 GHz | 1.1 GHz |
| Rise/Fall Time | 175 ps | 185 ps | 330 ps | 320 ps |
| Gain/Transimpedance | 20 dB / 500 V/A | 40 dB / 5,000 V/A | 40 dB / 5,000 V/A | 60 dB / 50,000 V/A |
| Input Noise [/√Hz] | 680 pV (13.6 pA) | 650 pV (13 pA) | 330 pV (6.6 pA) | 330 pV (6.6 pA) |
| Input VSWR | 1.15 | 1.2 | 1.45 | 1.4 |
| Output Voltage | 2.5 Vp-p | 1.7 Vp-p | 2.0 Vp-p | 2.3 Vp-p |
| Input | 50 Ω, SMA | 50 Ω, SMA | 50 Ω, SMA | 50 Ω, SMA |
| Signal Output | Two identical signal outputs, 50 Ω, SMA, Output Voltage 2 Vp-p (@ 50 Ω Load) | |||
| Monitor Output | Gain: 1,000 V/A, Output Voltage: +/- 10 V (@ ≥1 MΩ load), Bandwidth: DC - 100 kHz, BNC | |||
| Power Supply | ± 15V, +190 mA/-10mA Typ | |||
| Case | 110 x 70 x 25 mm (L x W x H), Weight 180 gr. (0.41 lbs) | |||
| Integrated DC path. 8-32 and M4 mounting threads. Power supply via 3-pin LEMO socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet. | ||||