Current sense amplifier

Details Current sense amplifier Current sense amplifier

2007-07-31

2007-07-31

Phan, Trong (Department: 2827)

Static information storage and retrieval

Read/write circuit

Differential sensing

C365S210130, C365S158000, C327S053000

Reexamination Certificate

active

10937155

ABSTRACT:
A high-speed current sense amplifier has complementary reference cells and load devices that eliminate capacitive mismatch contributions. The current sense amplifier includes a voltage comparator, a first clamping device coupled between a first input of the voltage comparator and a first input signal node. The first clamping device is coupled to a reference voltage. A second clamping device is coupled between the second input of the voltage comparator and a second input signal node. The second clamping device is also coupled to the reference voltage. A current mirror is coupled between the first and second input of the voltage comparator and is coupled to an active capacitance balancing circuit. The active capacitance balancing circuit may be combined with the voltage comparator. Equalization devices may be coupled between the first and second inputs of the voltage comparator, and between the first input signal node and the second input signal node.

REFERENCES:
patent: 5663915 (1997-09-01), Mobley
patent: 5694363 (1997-12-01), Calligaro et al.
patent: 5929658 (1999-07-01), Cheung et al.
patent: 5939903 (1999-08-01), Lin
patent: 6191989 (2001-02-01), Luk et al.
patent: 6259644 (2001-07-01), Tran et al.
patent: 6269040 (2001-07-01), Reohr et al.
patent: 6379978 (2002-04-01), Goebel et al.
patent: 6385079 (2002-05-01), Tran
patent: 6400607 (2002-06-01), Pasotti et al.
patent: 6456525 (2002-09-01), Perner et al.
patent: 6466059 (2002-10-01), Gaibotti et al.
patent: 6469937 (2002-10-01), Fuchigami et al.
patent: 6473336 (2002-10-01), Nakajima et al.
patent: 6473349 (2002-10-01), Flannagan
patent: 6480412 (2002-11-01), Bessho et al.
patent: 6567299 (2003-05-01), Kunikiyo et al.
patent: 6574129 (2003-06-01), Tran
patent: 6608787 (2003-08-01), Daga et al.
patent: 6678189 (2004-01-01), Tran
patent: 6683807 (2004-01-01), Hidaka
patent: 6700814 (2004-03-01), Nahas et al.
patent: 6798250 (2004-09-01), Wile
patent: 6946882 (2005-09-01), Gogl et al.
patent: 2003/0052844 (2003-03-01), Fish et al.
patent: 2004/0120200 (2004-06-01), Gogl et al.
patent: 0 936 627 (1999-08-01), None
patent: WO 02/29776 (2002-04-01), None
Fox, R.M., et al., “Leveraged Current Mirror Op Amp,” Analog Integrated Circuits and Signal Processing, vol. 35, pp. 25-31, 2003, Kluwer Academic Publishers, The Netherlands.
Bette, A., et al., “A High-Speed 128Kbit MRAM Core for Future Universal Memory Applications,” Symposium on VLSI Circuits Digest of Technical Papers, 2003, pp. 217-220.
Debrosse, J., et al., “A High-Speed 128-kb MRAM Core for Future Universal Memory Applications,” IEEE Journal of Solid-State Circuits, Apr. 2004, pp. 678-683, vol. 39, No. 4.

Affiliated with

Also associated with

Rating

Current sense amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Current sense amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current sense amplifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3808086