3.
    发明专利
    未知

    公开(公告)号:DE102005008332B3

    公开(公告)日:2006-11-02

    申请号:DE102005008332

    申请日:2005-02-23

    Abstract: An amplifier circuit for an oscillator in a defined oscillating frequency range includes a plurality of transconductors, wherein at least one transconductor has a positive transconductance, and wherein at least one other transconductor has a negative transconductance, wherein the transconductors together provide a positive amplification, and a passive impedance element coupled to at least one fed back transconductor, wherein the transconductance of the transconductor and the impedance element are dimensioned so that, in the oscillating frequency range, a given phase difference is present between a signal at the input and a signal at the output.

    5.
    发明专利
    未知

    公开(公告)号:DE10345521B3

    公开(公告)日:2005-08-25

    申请号:DE10345521

    申请日:2003-09-30

    Abstract: The invention provides an amplifier arrangement which is of multistage design. The output transistor in the output stage has a coupling path between its control input and its controlled path. The coupling path comprises a series circuit comprising a Miller compensation capacitance and a resistance with a controllable resistance value. It is thus possible to ensure stable operation of the amplifier regardless of bias and load conditions while simultaneously reducing the quiescent current drawn.

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