Integrable current supply circuit with parasitic compensation
US6563368B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2001 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Oct 5, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Integrable current supply circuit An integrable current supply circuit for feeding a supply current to a signal line (12) having a current source (14) for producing a source current which is emitted via a connection line (18) to an input of a current amplifier (20), which amplifies the source current and feeds the amplified source current as a supply current via a current output (2) of the current supply line to the signal line (12), with the current source (14) and the current amplifier (20) having parasitic capacitances, distinguished by a compensation capacitor (28) which is connected to the current output (2) and whose capacitance corresponds to the parasitic capacitances, and a current mirror circuit (31) which emits the charging current that flows through the compensation capacitor (28) in order to compensate for the charging currents flowing through the parasitic capacitances in mirrored form onto the connection line (18) connected between the current source (14) and the current amplifier (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.