preamplifer circuit with high impedance

Published:2011/6/18 10:29:00 Author:Nancy | Keyword: high impedance, preamplifer | From:SeekIC

Figure (a) and (b) has very high input resistor and very low output resistor and can be used as wideband amplifier for test head circuit such as oscilloscope, the input and output have the same electric potential, the voltage amplification factor is 1. Figure (c) is the amplitude and phase characteristic curve when load resistor RL equals to 50Ω. Main technical data:input resistor (25℃)﹥109Ωwideband frequency (-3 dB, load resistor RL=50Ω)﹥100MHz output resistor﹤10Ω



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