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.

Date of Patent:
Jan. 07, 2025

Filed:

Sep. 21, 2022
Applicant:

Sandisk Technologies Llc, Addison, TX (US);

Inventors:

Nirav Natwarbhai Patel, Bangalore, IN;

Shiv Harit Mathur, Bangalore, IN;

Sai Ravi Teja Konakalla, Bangalore, IN;

Assignee:

SANDISK TECHNOLOGIES LLC, Addison, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/00 (2006.01); G11C 7/10 (2006.01); G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
H03K 19/0005 (2013.01); G11C 7/1048 (2013.01); G11C 16/0483 (2013.01);
Abstract

Systems and methods for improving the power, performance, and area (PPA) for a voltage mode driver and on die termination (ODT). A voltage mode driver having first and second circuits in a pulldown design. The first circuit has a plurality of nMOS devices in parallel, the plurality of nMOS devices being common to a first resistor. The second circuit is in parallel with the first circuit and has an nMOS device in series with a second resistor. The second circuit is configured to be enabled when the pulldown impedance of the first circuit, with the second circuit disabled and all of the nMOS devices of the first circuit turned on, is greater than a desired pulldown impedance. The voltage mode driver may also be a pullup design, or have both pulldown and pullup stages.


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