Process and temperature immunity in circuit design
US11329650B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2018 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Mar 29, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/30111
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus can include tracking circuitry coupled to a current source and configured to generate a reference voltage signal based on a reference current signal from the current source. The apparatus can include voltage regulator circuitry coupled to the tracking circuitry and configured to generate a voltage supply signal based on the reference voltage signal. The apparatus can further include amplifier circuitry configured to amplify an input signal based on the voltage supply signal. The reference voltage signal can track process and temperature variations associated with at least one field effect transistor within the tracking circuitry. The voltage regulator circuitry can be configured to operate with a closed loop gain higher than 1. The tracking circuitry includes a first transistor connected in parallel with a second transistor, the first and second transistors having a complimentary type with each other (e.g., NMOS and PMOS transistors).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.