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A time-based gyrator Is presented to Implement active Inductors in an area efficient manner. Using a ring oscillator to integrate the input voltage and a switched transconductor to inject current into the input node, the proposed gyrator achieves inductive input impedance without using either large resistors or capacitors. Realizing the gyrator in this manner makes it amenable for technology scaling...
Serial link transceivers that can operate across a wide range of data rates offer flexibility and rapid realization of single-chip multi-standard solutions. The ability to independently control the data rate of each lane in a multi-lane transceiver with fine granularity is also valuable [1,2]. The implementation of such transceivers would require analog front-ends and clocking circuits that can operate...
Ring oscillator (RO)-based clock multipliers are traditionally used for clocking digital systems such as processors. While they are most commonly implemented using PLLs, it is becoming increasingly difficult to design them in a power efficient manner, as their jitter requirements grow more stringent. Recognizing that the main limitation of PLLs arises from limited RO noise suppression bandwidth (NBW...
Injection-locked clock multipliers (ILCMs) achieve superior phase noise compared to conventional PLLs [1, 2]. In its simplest form, an ILCM is an oscillator into which a train of narrow pulses is injected at reference frequency FREF as shown in Fig. 10.6.1. If the free-running frequency, FFR, of the oscillator is tuned close to NFREF (N=4, in Fig. 10.6.1), injected pulses phase lock the oscillator...
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