Device for establishing a current in an analog part of an integrated logic and analog circuit
US5418488A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Jun 16, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/468
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The device comprises (a) an external impedance (R.sub.ext) connected up between a voltage source (E) for powering the circuit and a pin (4) connected to a high-impedance input (3) of the logic part of this circuit, (b) a branch of the analogue circuit, connected up between this pin (4) and the earth of the circuit and, (c) a circuit (5) transmitting logic signals and connected up to this pin (4) by a logic output (6) which offers a high impedance in one of its two logic states, a specified current being established in the said pin when the said output is in the high-impedance state. Application to the limitation, regulation, directing or measuring of the current in a load outside the integrated circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.