Common mode tracking receiver

Details Common mode tracking receiver Common mode tracking receiver

2009-06-15

2011-10-04

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Clock or pulse waveform generating

C327S299000, C361S056000, C361S091100

Reexamination Certificate

active

08030983

ABSTRACT:
A clock receiver (301) on an integrated circuit (202) includes a programmable AC voltage divider (502) for receiving, through an input capacitor (406), a clock signal (206) from a clock generator (204) off the integrated circuit and for outputting a modified signal that has a reduced voltage swing, an inverter (440) coupled to the programmable voltage divider, and a common mode setting circuit (506), coupled to an input and an output of the inverter. The common mode setting circuit sets and maintains a common mode at the input of the inverter in response to a voltage at the input of the inverter and a voltage at the output of the inverter. The strength of transistors in the common mode tracking circuit tracks the strength of transistors in the inverter such that the common mode at the input to the inverter tracks a trip point of the inverter.

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patent: 2002/0163768 (2002-11-01), Kwon et al.
patent: 2004/0086061 (2004-05-01), Lundberg

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