Multiple-output transconductance amplifier based instrumentation amplifier
US8823450B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Oct 5, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45711
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This disclosure is directed to devices and integrated circuits for instrumentation amplifiers. In one example, an instrumentation amplifier device uses two non-inverted outputs of a first multiple-output transconductance amplifier, and a non-inverted output and an inverted output of a second multiple-output transconductance amplifier. Both multiple-output transconductance amplifiers have a non-inverted output connected to an inverting input, and a non-inverting input connected to a respective input voltage terminal. A first resistor is connected between the inverting inputs of both multiple-output transconductance amplifiers. The outputs of both multiple-output transconductance amplifiers are connected together, connected through a second resistor to ground, and connected to an output voltage terminal. In other examples, two pairs of outputs from triple-output transconductance amplifiers are connected to provide two voltage output terminals, and may also be connected to buffers or a differential amplifier. These provide various advantages over traditional instrumentation amplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.