Low power to analog to digital converter with small input...

Details Low power to analog to digital converter with small input... Low power to analog to digital converter with small input...

2008-07-29

2009-02-17

Williams, Howard (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

Reexamination Certificate

active

07492301

ABSTRACT:
According to one embodiment of the present invention an analog to digital converter comprises a track and hold unit, a plurality of current-integrating voltage shifters connected to the track and hold unit, a plurality of latches connected to the plurality of current-integrating voltage shifters, wherein a voltage offset of each latch in the plurality of latches is adjustable, wherein each current-integrating voltage shifter in the plurality of current-integrating voltage shifters drives a latch of the plurality of latches, wherein each current-integrating voltage shifter in the plurality of current-integrating voltage shifters corresponds to a voltage range, and wherein each latch connected to a current-integrating voltage shifter corresponds to a portion of the voltage range of the current-integrating voltage shifter.

REFERENCES:
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patent: 5990814 (1999-11-01), Croman et al.
patent: 6445329 (2002-09-01), Abassi et al.
patent: 2006/0114140 (2006-06-01), Hsueh
patent: 2006/0146958 (2006-07-01), Doi
Toifl et al., “A 22-Gb/s PAM-4 Receiver in 90-nm CMOS SOI Technology”, IEEE Journal of Solid-State Circuits, vol. 41, No. 4, Apr. 2006, pp. 954-965.

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