The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2019
Filed:
Aug. 22, 2017
Psemi Corporation, San Diego, CA (US);
Peter Bacon, Derry, NH (US);
Vikas Sharma, Reading, GB;
pSemi Corporation, San Diego, CA (US);
Abstract
A multi-channel digital step attenuator (DSA) architecture. One embodiment includes an array comprising N channels of B selectable attenuator cells series-connected. The overall impedance of a multi-channel DSA is a function of the parallel impedances of the N channels, and transition levels are reduced by 1/N since the transient effect of switching any one attenuator cell in or out of circuit in one channel is mitigated by all other in-circuit attenuator cells in the parallel channels. The multi-channel DSA architecture enables a great design flexibility, and allows a designer to vary one or more of at least the following design parameters: the number of attenuator cells B per channel; the number N of channels per DSA; the bit weighting of each attenuator cell per channel; the maximum attenuation per channel; and the characteristic impedance Zoof each channel.