Noise canceling current mirror circuit for improved PSR
US9746871B2 · kind B2 · utility
1Cited by
6References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 28, 2015 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Aug 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A current mirror circuit provides a current to drive a load. A noise cancelling circuit is provided to keep the load current constant in spite of variations in the supply voltage. The noise cancelling circuit includes an auxiliary current path which branches from the load current path. The length-to-width ratios of transistors of the circuit are selected to provide the desired noise cancellation while maintaining device stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.