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Published:2011/6/17 1:18:00 Author:Seven | Keyword: power amplifier | From:SeekIC
The front stage of the circuit is made of the FET HF op-amp OPA604, the rear stage is made of the high speed buffer BUF634, and a voltage serial passive feedback is used between the two stages of the amplifiers. The magnified multiple of the circuit is determined by two resistors (5kΩ and 250Ω) in the feedback sub-circuit, whose value is l+5kΩ/50Ω≈21. BUF634 is a high speed buffer.
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