| US 7,498,849 B2 | ||
| Sense amplifiers with high voltage swing | ||
| Takao Akaogi, Cupertino, Calif. (US); Sameer Wadhwa, Santa Clara, Calif. (US); Michael Achter, Mountain View, Calif. (US); and Bhimachar Venkatesh, Cupertino, Calif. (US) | ||
| Assigned to Spansion LLC, Sunnyvale, Calif. (US) | ||
| Filed on Nov. 15, 2007, as Appl. No. 11/985,427. | ||
| Application 11/985427 is a division of application No. 11/024257, filed on Dec. 28, 2004, granted, now 7,312,641, filed on Dec. 25, 2007. | ||
| Prior Publication US 2008/0068046 A1, Mar. 20, 2008 | ||
| Int. Cl. G01R 19/00 (2006.01); G11C 7/00 (2006.01) | ||
| U.S. Cl. 327—51 [327/56] | 15 Claims |
| 1. A sense amplifier comprising:
a reference voltage generator for generating a reference output voltage; and
a core output voltage generator for generating a core output voltage, the core output voltage generator including:
a plurality of amplifier transistors each conducting a portion of a core current through a current conducting device;
wherein a gate of a selected one of the amplifier transistors has the core output voltage generated thereon;
and wherein the reference voltage generator includes:
a plurality of reference transistors each conducting a portion of a reference current through a reference cell;
wherein gates of the reference transistors are coupled together with the reference output voltage generated thereon, and wherein
drains of the reference transistors are coupled together at a reference bit node having a reference bit voltage generated
thereon, and wherein sources of the reference transistors are coupled to a power supply.
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