High speed, low power, current mode comparator
First Claim
Patent Images
1. An apparatus comprising:
- a pair of cross-coupled inverters;
an equalizing transistor coupled between a first source of a first n-transistor of a first inverter and a second source of a second n-transistor of a second inverter;
the equalizing transistor, an input current mirror and a reference current mirror coupled to the pair of cross-coupled inverters wherein the current flow in the input current mirror is compared to the current flow in the reference current mirror in response to an enable signal.
0 Assignments
0 Petitions
Accused Products
Abstract
A current regenerative comparator. A pair of cross coupled inverters are coupled to an equalizing transistor, an input current mirror and a reference current mirror, such that current flowing in the input current mirror is compared to the current flowing in the reference current mirror.
80 Citations
7 Claims
-
1. An apparatus comprising:
-
a pair of cross-coupled inverters; an equalizing transistor coupled between a first source of a first n-transistor of a first inverter and a second source of a second n-transistor of a second inverter; the equalizing transistor, an input current mirror and a reference current mirror coupled to the pair of cross-coupled inverters wherein the current flow in the input current mirror is compared to the current flow in the reference current mirror in response to an enable signal. - View Dependent Claims (2, 3, 4)
-
-
5. A circuit comprising:
-
a pair of cross-coupled inverters having complimentary outputs indicative of a comparison of two input currents; equalizing means for equalizing a voltage at a first output node of a first transistor of a first inverter and a second output node of a second transistor of a second inverter in response to an enable signal being deasserted; and a first current mirror and a second current mirror coupled to the first output node and the second output node, respectively, to reflect the input currents into the inverters. - View Dependent Claims (6, 7)
-
Specification