Amplifier, a residue amplifier, and an ADC including a residue amplifier
US9231539B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2013 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | May 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/164
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier, comprising: an input node; an output node; a gain stage having a gain stage inverting input, a gain stage non-inverting input and a gain stage output; a feedback capacitor connected in a signal path between the gain stage output and the gain stage inverting input; a sampling capacitor connected between the input node and the gain stage inverting input, and a controllable impedance in parallel with the feedback capacitor, wherein the controllable impedance is operable to switch between a first impedance state in which it does not affect current flow through the feedback capacitor, and a second impedance state in which it cooperates with the feedback capacitor form a bandwidth limiting circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.