Programmable gain attenuator with a wide attenuation range and a fine attenuation step size
US8299870B2 · kind B2 · utility
1Cited by
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13Claims
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Key dates
| Filing date | Jan 19, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Mar 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/001
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A programmable gain attenuator (PGA) configured to receive a signal at an input and provide an attenuated version of the signal at an output is provided herein. The PGA includes a resistor coupled between a first tap and a second tap, where the first tap is coupled to the input of the PGA. The PGA further includes two sets of switches. The first set of switches is coupled in parallel between the first tap and the output, and the second set of switches is coupled in parallel between the second tap and the output. The attenuation setting of the programmable gain attenuator can be determined by controlling each set of switches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.