Programmable high pass amplifier for perpendicular recording...

Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier

Reexamination Certificate

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C330S282000

Reexamination Certificate

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07876520

ABSTRACT:
A system comprises a read element, a first differential amplifier, and a second differential amplifier including inputs that communicate with outputs of the first differential amplifier. First and second resistances communicate with the inputs of the first differential amplifier, respectively, and communicate with the outputs of the first differential amplifier, respectively. First and second capacitances communicate with the inputs of the first differential amplifier, respectively. Third and fourth resistances communicate with the first and second capacitances and with the magneto-resistive read element, respectively, and communicate with the outputs of the second differential amplifier, respectively.

REFERENCES:
patent: 3365673 (1968-01-01), Barditch et al.
patent: 3737798 (1973-06-01), Faraguet et al.
patent: 3760287 (1973-09-01), Harris
patent: 3918005 (1975-11-01), Bruckenstein et al.
patent: 4535233 (1985-08-01), Abraham
patent: 4564818 (1986-01-01), Jones
patent: 4724315 (1988-02-01), Goerne
patent: 4731590 (1988-03-01), Saari
patent: 4749955 (1988-06-01), Cook
patent: 4764732 (1988-08-01), Dion
patent: 4772859 (1988-09-01), Sakai
patent: 4914402 (1990-04-01), Dermitzakis et al.
patent: 4919534 (1990-04-01), Reed
patent: 5010588 (1991-04-01), Gimlett
patent: 5042299 (1991-08-01), Wells
patent: 5049834 (1991-09-01), Kasai
patent: 5121273 (1992-06-01), Slezak
patent: 5142286 (1992-08-01), Ribner et al.
patent: 5155455 (1992-10-01), Cowley et al.
patent: 5345073 (1994-09-01), Chang et al.
patent: 5382920 (1995-01-01), Jung
patent: 5532471 (1996-07-01), Khorramabadi et al.
patent: 5552950 (1996-09-01), Coffey et al.
patent: 5646573 (1997-07-01), Bayruns et al.
patent: 5734293 (1998-03-01), Gross
patent: 5761225 (1998-06-01), Fidric et al.
patent: 5793230 (1998-08-01), Chu et al.
patent: 5822104 (1998-10-01), Saito
patent: 6011415 (2000-01-01), Hahn et al.
patent: 6037841 (2000-03-01), Tanji et al.
patent: 6040793 (2000-03-01), Ferguson et al.
patent: 6057738 (2000-05-01), Ku et al.
patent: 6084478 (2000-07-01), Mayampurath
patent: 6114913 (2000-09-01), Entrikin
patent: 6122131 (2000-09-01), Jeppson
patent: 6137355 (2000-10-01), Sevic et al.
patent: 6169764 (2001-01-01), Babanezhad
patent: 6188494 (2001-02-01), Minteer
patent: 6226322 (2001-05-01), Mukherjee
patent: 6292052 (2001-09-01), Carlson
patent: 6330279 (2001-12-01), Belser et al.
patent: 6353324 (2002-03-01), Uber et al.
patent: 6466091 (2002-10-01), Kejariwal et al.
patent: 6515540 (2003-02-01), Prasad et al.
patent: 6525589 (2003-02-01), Thomsen et al.
patent: 6538833 (2003-03-01), Choi
patent: 6552605 (2003-04-01), Yoon
patent: 6573811 (2003-06-01), Martin
patent: 6593810 (2003-07-01), Yoon
patent: 6636383 (2003-10-01), Chew
patent: 6642496 (2003-11-01), Gulbransen
patent: 6664912 (2003-12-01), Zanchi
patent: 6713749 (2004-03-01), Wu et al.
patent: 6724258 (2004-04-01), Fayed
patent: 6762644 (2004-07-01), Sutardja
patent: 6784749 (2004-08-01), Cove
patent: 6836182 (2004-12-01), Sutardja
patent: 6876259 (2005-04-01), Visocchi
patent: 6888694 (2005-05-01), Guo et al.
patent: 6952136 (2005-10-01), Gupta
patent: 6958656 (2005-10-01), Yamashita et al.
patent: 7002409 (2006-02-01), Aram
patent: 7015451 (2006-03-01), Dalke et al.
patent: 7023271 (2006-04-01), Aram
patent: 7049892 (2006-05-01), Matsunaga et al.
patent: 7075364 (2006-07-01), Gudem et al.
patent: 7173486 (2007-02-01), Sutardja
patent: 7276965 (2007-10-01), Sutardja
patent: 7304536 (2007-12-01), Sutardja
patent: 7405616 (2008-07-01), Sutardja
patent: 7439803 (2008-10-01), Dasgupta
patent: 7440208 (2008-10-01), McEwen et al.
patent: 7459972 (2008-12-01), Aram et al.
patent: 2002/0153949 (2002-10-01), Yoon
patent: 2005/0237401 (2005-10-01), Tan et al.
patent: 406061752 (1994-03-01), None
patent: 406061752 (1994-03-01), None
patent: H6-61752 (1994-03-01), None
patent: WO 99/46607 (1999-09-01), None
patent: WO 99/466607 (1999-09-01), None
W. Grise, Dept. of IET, Morehead State University, Morehead, KY; Application of the Operational Transconductance Amplifier (OTA) to Voltage-controlled Amplifiers and Active Filters; 10 pages.
Axel Thomsen, Dan Kasha, Wai Lee, Crystal Semiconductor Division, Cirrus Logic, Inc., Austin, Texas; A Five Stage Chopper Stabilized Instrumentation Amplifier Using Feedfoward Compensation; 1998; 4 pages.
Axel Thomsen, Edwin de Angel, Sherry Ziachong Wu, Aryesh Amar, Lei Wang, Wai Lee, WA 20.1 A DC Measurement IC with 130nVppNoise in 10Hz; 2000 IEEE International Solid-State Circuits Conference; 9 pages.
Axel Thomsen, Edwin de Angel, Sherry Ziachong Wu, Aryesh Amar, Lei Wang, Wai Lee, WA 20.1 A DC Measurement IC with 130nVppNoise in 10Hz; ISSCC 2000/Session 20/Oversampled Converters/ Paper WA 20.1 ISSCC 2000 Slide Supplement; 5 pages.
M. Moyal, M. Groepl, H. Werker, G. Mitteregger, J. Schambacher; Xignal Technologies AG, Munich, Germany; 23.6 A 700/900mW/Channel CMOS Dual Analog Front-End IC for VDSL with Integrated 11.5/14.5dBm Line Drivers; 2003 IEEE International Solid-State Circuits Conference; ISSCC 2003/Session 23/Mixed-Signal and Wireline Techniques; 10 pages.
M. Moyal, M. Groepl, H. Werker, G. Mitteregger, J. Schambacher; Xignal Technologies AG, Munich, Germany; A 700/900mW/Channel CMOS Dual Analog Front-End IC for VDSL with Integrated 11.5/14.5dBm Line Drivers; Outline, Overview 24 pages.
Charles A. Holt, “Electronic Circuits Digital and Analog”, by John Wiley & Sons, Inc., 1978, pp. 423, 431, and 436.
U.S. Appl. No. 10/072,843, filed Feb. 6, 2002, entitled, “Nested Transimpedance Amplifier”, Marvell.
U.S. Appl. No. 10/459,731, filed Jul. 11, 2003, entitled, “Nested Transimpedance Aplifier”, Marvell.
U.S. Appl. No. 10/814,534, filed Mar. 31, 2004, entitled, “Variable-Gain Constant-Bandwidth Transimpedance Amplifier”, Marvell.
U.S. Appl. No. 10/838,040, filed May 3, 2004, entitled, Nested Transimpendance Amplifer With Capacitive Cancellation of Input Parasitic Capacitance, Marvell.
You et al., SA 21.2 “A Multistate Amplifier Topology with Nested Gm-C Compensation for Low-Voltage Application”, IEEE Internaional Solid-State Circuits Conference, Digest of Technical Papers, ISSCC97, Feb. 8, 1997, pp. 348-349.
Black, Brian; “Analog-to-Digital Converter Architectures for Choices for System Design”; Analog Dialogue 33-8 (1999); 4 pages.
Holt, Charles A.; “Electronic Circuits Digital and Analog”, by John Wiley & Sons, Inc., 1978, pp. 423, 431, and 436.
Dallas Maxim; “Demystifying Sigma-Delta ADCs”; A/D and D/A Conversion/Sampling Circuits; Temperature Sensors; Application Note 1870; Jan. 31, 2003; 15 pages.
Grise, W., Dept. of IET, Morehead State University, Morehead, KY; Application of the Operational Transconductance Amplifier (OTA) to Voltage-controlled Amplifiers and Active Filters; 10 pages.
M. Moyal, M. Groepl, H. Werker, G. Mitteregger, J. Schambacher; Xignal Technologies AG, Munich, Germany; 23.6 A 700/900mW/Channel CMOS Dual Analog Front-End IC for VDSL with Integrated 11.5/14.5dBm Line Drivers; 2003 IEEE International Solid-State Circuits Conference; ISSCC 2003/Session 23/Mixed-Signal and Wireline Techniques; 10 pages.
M. Moyal, M. Groepl, H. Werker, G. Mitteregger, J. Schambacher; Xignal Technologies AG, Munich, Germany; A 700/900mW/Channel CMOS Dual Analog Front-End IC for VDSL with Integrated 11.5/14.5dBm Line Drivers; Outline, Overview 24 pages.
U.S. Appl. No. 10/459,731, filed Jul. 11, 2003, entitled, “Nested Transimpedance Amplifier With Capacitive Cancellation of Input Parasitic Capacitance”, pp. 1-46 and 19 sheets of drawings; Marvell.
You et al., SA 21.2 “A Multistate Amplifier Topology with Nested Gm-C Compensation for Low-Voltage Application”, IEEE International Solid-State Circuits Conference, Digest of Technical Papers, ISSCC97, Feb. 8, 1997, pp. 348-349.
M. Moyal, M. Groepl, H. Werker, G. Mitteregger, J. Schambacher; Xignal Technologies AG, Munich, Germany; A 700/900mW/Channel CMOS Dual Analog Front-End IC for VDSL with Integrated 11.5/14.5dBm Line Drivers; Outline,

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