QUALCOMM Incorporated
RADIO FREQUENCY DIGITAL-TO-ANALOG CONVERTER (RFDAC) WITH DYNAMIC IMPEDANCE MATCHING FOR HIGH LINEARITY

Abstract:

Certain aspects of the present disclosure are directed to a radio frequency digital-to-analog converter (RFDAC). The RFDAC generally includes a plurality of digital-to-analog (DAC) unit cells. At least one DAC unit cell is capable of being configured in an active state or in a sleep state. For the at least one DAC unit cell, an output impedance of the DAC unit cell in the active state is equal to an output impedance of the DAC unit cell in the sleep state.