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技術參數：

Bandwidth up to 2 GHz

Gain up to 60 dB (50，000 V/A)

Input Noise 330 pV/√Hz (6.6 pA/√Hz)

Integrated Bias-T

Two Identical Signal Outputs (HSA-Y)

DC-Monitor Output (HSA-Y)

主要特點：

Ultra-Low-Noise Amplification with High Gain at GHz Speed

The series HSA High-Speed 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 Bias-T

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 of the HSA-X the HSA-Y is 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 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