Antenna Tuning Circuit
STMicroelectronics STHVDAC-253M Antenna Tuning Circuit is a high voltage Digital-to-Analog Converter (DAC) that integrates three independent high voltage outputs, allowing it to simultaneously optimize antenna performance in three different frequency bands. STHVDAC-253M meets the wide tuning bias voltage requirement of the BST tunable capacitances through a bias voltage ranging from 0 to 25V. Fully controlled through the RFFE serial interface, STHVDAC-253M enables significant improvement in mobile phones in terms of radiated performances, making the performance almost insensitive to the external environment. The device is available in WLCSP for stand-alone or SiP module integration.