Universal output driver and filter
US6114844A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 1999 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | May 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An output driver is provided with driving and filtering capability. An output current driver and output voltage driver embodiments are provided. The output current driver includes, an operational amplifier having a first input for receiving a first input voltage V.sub.1, a second input for receiving a second input voltage V.sub.2, and an output for generating an output voltage Vc. The output current driver also includes a transistor having an input terminal coupled to the output of the operational amplifier for receiving the output voltage Vc, a first terminal coupled to a differential pair, and a second terminal coupled to the second input of the operational amplifier, wherein an output current I.sub.out flows across the transistor. A control current I.sub.CONTROL determines a value of the first input voltage V.sub.1, while the output voltage Vc controls the transistor so that the second voltage V.sub.2 becomes equal to the first voltage V.sub.1. The voltage driver includes, a first plurality of parallel modules coupled to an output load and capable of setting a first equivalent resistive value and a second equivalent resistive value, and a second plurality of parallel modules cou…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.