Monolithically integratable constant-current generating circuit with low supply voltage
US4563632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1983 |
| Grant date | Jan 7, 1986 |
| Priority date | — |
| Expiry date | Sep 21, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/265
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A monolithically integratable constant-current generating circuit includes a current-generating circuit having a control terminal and two output terminals, from which currents flow that are bound by a constant proportionality ratio. There is connected to one output terminal the input branch of a circuit having a current mirror and having a current gain which varies with the level of the current itself. A first input terminal of a current-comparator and amplifier circuit is connected to the output branch of the current mirror; a second input terminal is connected to the second output terminal of the current-generating circuit and the control terminal is connected to the output terminal of the current-comparator and amplifier circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.