Voltage-to-current converter circuit with independent and adjustable compensation for process, voltage, and temperature
US6326855A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1999 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | May 25, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/0995
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage-to current (V-to-I) converter circuit for use in combination with a current-controlled oscillator (ICO) to form a voltage-controlled oscillator (VCO), wherein the V-to-I converter circuit provides a current to the ICO while this current ranges itself corresponding to the process, supply voltage, and temperature needs of the ICO, thus allowing a more stabilized ICO and VCO. In one embodiment, the V-to-I circuit allows for independent adjustability to compensate for each quantity of required process, supply voltage, and temperature. In another embodiment, the V-to-I circuit includes compensation circuitry for process and temperature only. There is no need for supply voltage compensation because the supply voltage for the V-to-I converter circuit is provided from a supply that has been linearly regulated and preferably built-in on the chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.