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:
Mar. 08, 2022
Filed:
Jul. 31, 2020
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
John L. Melanson, Austin, TX (US);
Johann G. Gaboriau, Austin, TX (US);
Lei Zhu, Austin, TX (US);
Wai-Shun Shum, Austin, TX (US);
Xiaofan Fei, Austin, TX (US);
Leyi Yin, Austin, TX (US);
Cirrus Logic, Inc., Austin, TX (US);
Abstract
A differential output current digital-to-analog converter (IDAC) circuit may include a delta-sigma modulator configured to receive a digital input signal, a control circuit responsive to the delta-sigma modulator configured to perform a DAC decode operation, a plurality of DAC elements responsive to the DAC decode operation, the plurality of DAC elements configured to, in concert, generate a differential output current signal based on the digital input signal to a load coupled to a pair of output terminals of the IDAC, and an output impedance coupled between the pair of output terminals such that the output impedance is in parallel with the load.