What filter architectures are really being used today?

EE 508 Lecture 41

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Mosfet-R integtator

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Authors claim Op Amp is highly power efficient

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ST transistors operating in weak inversion provide linearization of basic transconductance stage. Transistor biasing not shown but described in [11]

For the robust characteristics to variations of process, supply voltage, and temperature, the MT and ST are biased with current-mirror bias circuitry [11].

capacitor

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Two integrator loop oscillators – different methods for controlling the loss 19