Low voltage, low power differential receiver

Details Low voltage, low power differential receiver Low voltage, low power differential receiver

2005-11-29

2005-11-29

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S261000, C327S359000

Reexamination Certificate

active

06970043

ABSTRACT:
A folded common cascode circuit with symmetric parallel signal paths from the differential inputs to a single ended output provides a low skew, low jitter, low power, high speed differential amplifier. The signal paths on either side of the differential amplifier are made equal with equal loads along each path. Pairs of complementary NMOS and PMOS transistor pairs with parallel complementary biasing current mirroring stacks on the cascode circuitry have all their gates connected together. The layout maintains symmetrical parallel signal paths and symmetrical amplification and impedance loading from differential input to output. Output inverters provide a higher drive capability.

REFERENCES:
patent: 5801564 (1998-09-01), Gasparik
patent: 5894245 (1999-04-01), Cho
patent: 6052025 (2000-04-01), Chang et al.
patent: 6150883 (2000-11-01), Ivanov
patent: 6236269 (2001-05-01), Hojabri
patent: 6252432 (2001-06-01), Freitas
patent: 6275073 (2001-08-01), Tokuhiro
patent: 6614302 (2003-09-01), Abe
patent: 6657495 (2003-12-01), Ivanov et al.

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