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:
Oct. 20, 2020
Filed:
Jun. 16, 2017
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Martin Anderson, Löddeköpinge, SE;
Henrik Fredriksson, Lund, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A DAC () is disclosed. It comprises an input port comprising N input terminals p, p, . . . , pconfigured to receive voltages representing N input bits b, b, . . . , b, respectively, wherein the significance of bis higher than for bfor j=2, 3, . . . , N. Furthermore, it comprises a capacitor ladder circuit () comprising N capacitors C, C, . . . , Cwith capacitance C, each having a first terminal and a second terminal. Capacitor Cis connected with its first terminal to the terminal pof the input port. For each j=1, 2, . . . , N−1, the capacitor ladder circuit () comprises a capacitor () with capacitance xC connected between the second terminal of capacitor Cand the second terminal of capacitor C. The DAC () also comprises an input circuit () connected to the input port comprising at least one capacitor (-), each connected between a unique one of the input terminals p, p, . . . , pof the input port and signal ground.