Differential comparison circuit having improved common mode rang

Details Differential comparison circuit having improved common mode rang Differential comparison circuit having improved common mode rang

1996-11-01

1999-03-30

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327403, 327 99, 327 62, 327563, H03K 524, H03K 17687, H03F 345

Patent

active

058894195

ABSTRACT:
A differential comparison circuit obtains an improved common mode range with respect to the voltages on first and second inputs. A first comparator is activated when the first and second input voltages are above a first level. A second comparator is activated when the first and second input voltages are below a second level. The output of the comparator that is activated is selected for providing the comparison output signal. In this manner, the comparator having improved performance, typically in terms of differential input voltage sensitivity, may be selected for the voltages present at the inputs. In a typical embodiment, the first comparator uses n-channel input devices, and the second comparator uses p-channel input devices. The activation is provided by voltage level-sensing circuitry, and may include hysteresis to help ensure reliable operation.

REFERENCES:
patent: 4585952 (1986-04-01), Yamamoto
patent: 4912420 (1990-03-01), Parnell
patent: 4972157 (1990-11-01), Moyal
patent: 5015963 (1991-05-01), Sutton
patent: 5142244 (1992-08-01), Glica et al.
patent: 5194824 (1993-03-01), Wu et al.
patent: 5208552 (1993-05-01), Ryat
patent: 5222011 (1993-06-01), Braun
patent: 5539340 (1996-07-01), Van Leeuwen et al.
patent: 5701331 (1997-12-01), Hunt

Affiliated with

Also associated with

Rating

Differential comparison circuit having improved common mode rang does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Differential comparison circuit having improved common mode rang, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential comparison circuit having improved common mode rang will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1217898