Multi-mode current-to-voltage converter
US6417702B1 · kind B1 · utility
4Cited by
11References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Jul 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and circuit are provided to perform current-to-voltage conversions. The circuit is operational in one linear mode based on channel-length-modulation effects in the saturation region and two non-linear modes based on a current operation overrunning the saturation region and a logarithmic function of drain current versus gate-to-source voltage, respectively. An adaptive process is provided to set-up the quiescent point of the circuit. The conversion gain is variable with respect to the conversion mode, the current range, and the length of the converting transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.