Derek TamSouth Pasadena, CA

Derek Tam Phones & Addresses

South Pasadena, CA

Mentions for Derek Tam

Resumes

Resumes

Derek Tam Photo 1

Sr. Engineering Manager At Broadcom Corp

Position:
Senior Manager at Broadcom Corp
Location:
Orange County, California Area
Industry:
Semiconductors
Work:
Broadcom Corp since Nov 2008
Senior Manager
Broadcom Corp Feb 1999 - Nov 2008
Principal analog designer
Education:
University of Toronto 1992 - 1998
M.A.Sc
Derek Tam Photo 2

Student At University Of Southern California

Location:
Greater Los Angeles Area
Industry:
Graphic Design
Education:
University of Southern California 2005 - 2011

Publications

Us Patents

Reduced Line Driver Output Dependency On Process, Voltage, And Temperature Variations

US Patent:
7944251, May 17, 2011
Filed:
Mar 9, 2009
Appl. No.:
12/381227
Inventors:
Andrew Chen - Redondo Beach CA,
Joseph Aziz - Irvine CA,
Derek Tam - Irvine CA,
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H03B 1/00
US Classification:
327108, 327109, 327512
Abstract:
According to one exemplary embodiment, a transmitter module includes a line drive including a current digital-to-analog converter, where the line driver provides an analog output waveform. The current digital-to-analog converter receives a digitally filtered input waveform including at least two voltage steps. The at least two voltage steps of the digitally filtered input waveform cause a rise time of the analog output waveform to have a reduced dependency on process, voltage, and temperature variations in the line driver, while meeting stringent rise time requirements. The digitally filtered input waveform has an initial voltage level and a final voltage level, where the final voltage level is substantially equal to a sum of the at least two voltage steps of the digitally filtered input waveform.

Line Driver With Reduced Dependency On Process, Voltage, And Temperature

US Patent:
8598917, Dec 3, 2013
Filed:
Apr 27, 2011
Appl. No.:
13/095688
Inventors:
Andrew Chen - Redondo Beach CA,
Joseph Aziz - Irvine CA,
Derek Tam - Irvine CA,
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H03B 1/00
US Classification:
327108, 327109
Abstract:
According to one exemplary embodiment, a transmitter module includes a line drive including a current digital-to-analog converter, where the line driver provides an analog output waveform. The current digital-to-analog converter receives a digitally filtered input waveform including at least two voltage steps. The at least two voltage steps of the digitally filtered input waveform cause a rise time of the analog output waveform to have a reduced dependency on process, voltage, and temperature variations in the line driver, while meeting stringent rise time requirements. The digitally filtered input waveform has an initial voltage level and a final voltage level, where the final voltage level is substantially equal to a sum of the at least two voltage steps of the digitally filtered input waveform.

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