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  2. Cascode - Wikipedia

    en.wikipedia.org/wiki/Cascode

    In MOSFET technology especially, cascoding can be used in current mirrors to increase the output impedance of the output current source. A modified version of the cascode can also be used as a modulator, particularly for amplitude modulation. The upper device supplies the audio signal, and the lower is the RF amplifier device. High-voltage stack

  3. Current mirror - Wikipedia

    en.wikipedia.org/wiki/Current_mirror

    A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being "copied" can be, and sometimes is, a varying signal current.

  4. Wilson current mirror - Wikipedia

    en.wikipedia.org/wiki/Wilson_current_mirror

    The result is that new designs tend to use some variant of a wide swing cascode current mirror configuration. [10] [14] [15] In the case of extremely low power supply voltages of one volt or less, the use of current mirrors may be abandoned entirely. [16]

  5. Common source - Wikipedia

    en.wikipedia.org/wiki/Common_source

    Another major drawback is the amplifier's limited high-frequency response. Therefore, in practice the output often is routed through either a voltage follower (common-drain or CD stage), or a current follower (common-gate or CG stage), to obtain more favorable output and frequency characteristics. The CS–CG combination is called a cascode ...

  6. Common gate - Wikipedia

    en.wikipedia.org/wiki/Common_gate

    This configuration is used less often than the common source or source follower.However, it can be combined with common source amplifiers to create cascode configurations. . It is useful in, for example, CMOS RF receivers, especially when operating near the frequency limitations of the FETs; it is desirable because of the ease of impedance matching and potentially has lower noi

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    www.aol.com/losing-weight-50-possible-21...

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  8. Miller effect - Wikipedia

    en.wikipedia.org/wiki/Miller_effect

    A current buffer stage may be added at the output to lower the gain between the input and output terminals of the amplifier (though not necessarily the overall gain). For example, a common base may be used as a current buffer at the output of a common emitter stage, forming a cascode. This will typically reduce the Miller effect and increase ...

  9. Current source - Wikipedia

    en.wikipedia.org/wiki/Current_source

    The output part of the simple current mirror is an example of such a current source widely used in integrated circuits. The common base, common gate and common grid configurations can serve as constant current sources as well. A JFET can be made to act as a current source by tying its gate to its source. The current then flowing is the I DSS of ...