Amplifier
US8174319B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2011 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Jan 11, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/56
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An amplifier includes a first amplifier comprising an N-type field-effect transistor receiving a reference voltage at a gate, a P-type field-effect transistor connected between a drain of the N-type field-effect transistor and a power supply voltage line, and a constant current source connected between a source of the N-type field-effect transistor and a ground, to output a voltage from a connection of the drain of the N-type and P-type field-effect transistors; a second amplifier comprising a resistance and P-type field-effect transistors connected in series between the power supply voltage line and the ground to receive the voltage output from the first amplifier at their gate, and outputting a voltage from a connection of the P-type field-effect transistor and the resistance; and a switch between an output of the first amplifier and the power supply voltage line and comprising an N-type field-effect transistor receiving a reference voltage at a gate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.