The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2007
Filed:
May. 06, 2004
Shao H. Liu, Cupertino, CA (US);
Tri K. Tran, San Leandro, CA (US);
Brian W. Amick, Brookline, MA (US);
Shao H. Liu, Cupertino, CA (US);
Tri K. Tran, San Leandro, CA (US);
Brian W. Amick, Brookline, MA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
A sense amplifier latch that is operable to interface with high common-mode input voltages with wide ranges for all process variations. The sense amplifier latch comprises a cross-coupled latch having first and second rail signals; a pre-charge device; an equalization device; pass devices for enabling input devices to receive pad and reference inputs. In the present invention, the input devices comprise push-pull impedance dividers are used to preserve the input difference voltage while dramatically lowering the common-mode output voltage. The outputs of the impedance dividers are fed to the cross-coupled latch of the sense amplifier using n-channel pass gates.