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Voltage Amplifiers: High Speed

HSA Series

HSA-X

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 (ANE03.pdf).

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

High Speed Voltage Amplifiers Selector:

  Click Part # to view pdf datasheet
Model HSA-X-2-20
HSA-X-I-2-40
HSA-X-2-40
HSA-X-1-40
Lower Cut-Off-Frequency 10 kHz 10 kHz 10 kHz
Upper Cut-Off-Frequency 2.5 GHz 2.2 GHz 1.2 GHz
Rise-/Fall-Time (10%-90%) 180 ps 160 ps 320 ps
Gain/Transimpedance 20 dB / 500 V/A 40 dB / 5,000 V/A
(inverting)
40 dB / 5,000 V/A
Input Noise [/Hz] 650 pV (13 pA) 670 (13 pA) 330 pV (6.6 pA)
Input VSWR 1.1 1.25 : 1 1.3
Output Voltage 1.9 Vp-p 2.0 Vp-p 2 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 is available. For further information please view the datasheet.

 

  Click Part # to view pdf 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 1.1 GHz 1.1 GHz
Rise-/Fall-Time 180 ps 185 ps 320 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 (14 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
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 is available. For further information please view the datasheet.

FEMTO Product Catalog (pdf)

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