Fully-differential preamplifier
US11722108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2021 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Dec 12, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/35613
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Described herein is a fully-differential preamplifier comprising an input differential pair, an output current load, and a current source. The current source is coupled between the input differential pair and a low voltage rail and configured to control whether the fully-differential preamplifier is operating in a first mode or a second mode, wherein the preamplifier draws more current when operating in the second mode compared to when operating in the first mode. The input differential pair is coupled between the output current load and the current source. The output current load is coupled between a high voltage rail and the input differential pair. The input differential pair comprise positive and negative inputs of the fully-differential preamplifier. Nodes where the input differential pair and the output current load are coupled to one another comprise positive and negative outputs of the fully-differential preamplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.