Implantable Medical Electronics by Vinod Kumar Khanna

Author:Vinod Kumar Khanna
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

To distinguish from techniques like chopping (described in the next section), which reduce the noise effect on a circuit level, switched-biasing does so on the MOSFET device level itself. The former only mitigates the effect of noise leaving the noise source alone.

Switching transistors between two states may not be always possible. But this kind of freedom is available in some circuits, which are continuously processing the signals. It is also available in circuits in which bias current is required for certain intervals of time. Thus switching off the MOSFET s during periods of time in which they are not contributing towards circuit operation helps in weakening 1/f noise.

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