Offset cancel latching comparator
US5017805A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Nov 17, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/356034
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential pair of transistors (Q2, Q3), the sources of which are connected to a current source (Q1); first and second input terminals (IN, VX) connected to the gates of the first and second transistors respectively; first and second output terminals (DN, DP) connected to the drains of the second and first transistors; third and fourth transistors (Q6, Q7), the sources of which are connected to a voltage supply (UDD), the drain of the third transistor being connected to the drain of the first transistor, and the drain of the fourth transistor being connected to the drain of the second transistor; the gate of the third transistor being connected to the drain of the first transistor via first switch (Q104) and connected to the drain of the second transistor via a first capacitor (C1); and the gate of the fourth transistor being connected to the drain of the second transistor via second switch (Q5) and connected to the drain of the first transistor via a second capacitor (C2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.