US 12,261,622 B2
Circuitry for digital-to-analog conversion, differential systems and digital-to-analog converter
Michael Kalcher, Villach (AT); Daniel Gruber, St. Andrae (AT); and Martin Clara, Santa Clara, CA (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Jun. 25, 2021, as Appl. No. 17/358,152.
Prior Publication US 2022/0416806 A1, Dec. 29, 2022
Int. Cl. H03M 1/78 (2006.01); H03M 1/80 (2006.01)
CPC H03M 1/808 (2013.01) 15 Claims
OG exemplary drawing
 
1. Circuitry for digital-to-analog conversion, comprising:
a driver circuit;
a weighting resistor circuit coupled to an output of the driver circuit, the weighting resistor circuit comprising:
a first resistive sub-circuit coupled to the output of the driver circuit and an intermediate node;
a second resistive sub-circuit coupled to the intermediate node and a common node; and
a third resistive sub-circuit coupled to the intermediate node and an output of the circuitry, wherein the resistivity of the second resistive sub-circuit is equal to or smaller than the resistivity of the first resistive sub-circuit, wherein the second resistive sub-circuit comprises at least two signal paths coupled in parallel, each signal path being coupled between the intermediate node and the common node.